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the associated datatype as their equality member. This means that these opclasses can now support plain equality comparisons along with LIKE tests, thus avoiding the need for an extra index in some applications. This optimization was not possible when the pattern opclasses were first introduced, because we didn't insist that text equality meant bitwise equality; but we do now, so there is no semantic difference between regular and pattern equality operators. I removed the name_pattern_ops opclass altogether, since it's really useless: name's regular comparisons are just strcmp() and are unlikely to become something different. Instead teach indxpath.c that btree name_ops can be used for LIKE whether or not the locale is C. This might lead to a useful speedup in LIKE queries on the system catalogs in non-C locales. The ~=~ and ~<>~ operators are gone altogether. (It would have been nice to keep them for backward compatibility's sake, but since the pg_amop structure doesn't allow multiple equality operators per opclass, there's no way.) A not-immediately-obvious incompatibility is that the sort order within bpchar_pattern_ops indexes changes --- it had been identical to plain strcmp, but is now trailing-blank-insensitive. This will impact in-place upgrades, if those ever happen. Per discussions a couple months ago.
1073 lines
40 KiB
Plaintext
1073 lines
40 KiB
Plaintext
--
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-- OPR_SANITY
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-- Sanity checks for common errors in making operator/procedure system tables:
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-- pg_operator, pg_proc, pg_cast, pg_aggregate, pg_am,
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-- pg_amop, pg_amproc, pg_opclass, pg_opfamily.
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--
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-- None of the SELECTs here should ever find any matching entries,
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-- so the expected output is easy to maintain ;-).
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-- A test failure indicates someone messed up an entry in the system tables.
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--
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-- NB: we assume the oidjoins test will have caught any dangling links,
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-- that is OID or REGPROC fields that are not zero and do not match some
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-- row in the linked-to table. However, if we want to enforce that a link
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-- field can't be 0, we have to check it here.
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--
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-- NB: run this test earlier than the create_operator test, because
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-- that test creates some bogus operators...
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-- Helper functions to deal with cases where binary-coercible matches are
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-- allowed.
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-- This should match IsBinaryCoercible() in parse_coerce.c.
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create function binary_coercible(oid, oid) returns bool as $$
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SELECT ($1 = $2) OR
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EXISTS(select 1 from pg_catalog.pg_cast where
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castsource = $1 and casttarget = $2 and
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castfunc = 0 and castcontext = 'i') OR
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($2 = 'pg_catalog.anyarray'::pg_catalog.regtype AND
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EXISTS(select 1 from pg_catalog.pg_type where
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oid = $1 and typelem != 0 and typlen = -1))
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$$ language sql strict stable;
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-- This one ignores castcontext, so it considers only physical equivalence
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-- and not whether the coercion can be invoked implicitly.
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create function physically_coercible(oid, oid) returns bool as $$
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SELECT ($1 = $2) OR
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EXISTS(select 1 from pg_catalog.pg_cast where
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castsource = $1 and casttarget = $2 and
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castfunc = 0) OR
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($2 = 'pg_catalog.anyarray'::pg_catalog.regtype AND
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EXISTS(select 1 from pg_catalog.pg_type where
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oid = $1 and typelem != 0 and typlen = -1))
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$$ language sql strict stable;
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-- **************** pg_proc ****************
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-- Look for illegal values in pg_proc fields.
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SELECT p1.oid, p1.proname
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FROM pg_proc as p1
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WHERE p1.prolang = 0 OR p1.prorettype = 0 OR
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p1.pronargs < 0 OR
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array_lower(p1.proargtypes, 1) != 0 OR
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array_upper(p1.proargtypes, 1) != p1.pronargs-1 OR
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0::oid = ANY (p1.proargtypes) OR
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procost <= 0 OR
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CASE WHEN proretset THEN prorows <= 0 ELSE prorows != 0 END;
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oid | proname
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-----+---------
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(0 rows)
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-- Look for conflicting proc definitions (same names and input datatypes).
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-- (This test should be dead code now that we have the unique index
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-- pg_proc_proname_args_nsp_index, but I'll leave it in anyway.)
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SELECT p1.oid, p1.proname, p2.oid, p2.proname
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FROM pg_proc AS p1, pg_proc AS p2
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WHERE p1.oid != p2.oid AND
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p1.proname = p2.proname AND
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p1.pronargs = p2.pronargs AND
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p1.proargtypes = p2.proargtypes;
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oid | proname | oid | proname
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-----+---------+-----+---------
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(0 rows)
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-- Considering only built-in procs (prolang = 12), look for multiple uses
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-- of the same internal function (ie, matching prosrc fields). It's OK to
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-- have several entries with different pronames for the same internal function,
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-- but conflicts in the number of arguments and other critical items should
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-- be complained of. (We don't check data types here; see next query.)
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-- Note: ignore aggregate functions here, since they all point to the same
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-- dummy built-in function.
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SELECT p1.oid, p1.proname, p2.oid, p2.proname
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FROM pg_proc AS p1, pg_proc AS p2
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WHERE p1.oid < p2.oid AND
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p1.prosrc = p2.prosrc AND
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p1.prolang = 12 AND p2.prolang = 12 AND
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(p1.proisagg = false OR p2.proisagg = false) AND
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(p1.prolang != p2.prolang OR
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p1.proisagg != p2.proisagg OR
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p1.prosecdef != p2.prosecdef OR
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p1.proisstrict != p2.proisstrict OR
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p1.proretset != p2.proretset OR
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p1.provolatile != p2.provolatile OR
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p1.pronargs != p2.pronargs);
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oid | proname | oid | proname
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-----+---------+-----+---------
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(0 rows)
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-- Look for uses of different type OIDs in the argument/result type fields
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-- for different aliases of the same built-in function.
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-- This indicates that the types are being presumed to be binary-equivalent,
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-- or that the built-in function is prepared to deal with different types.
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-- That's not wrong, necessarily, but we make lists of all the types being
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-- so treated. Note that the expected output of this part of the test will
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-- need to be modified whenever new pairs of types are made binary-equivalent,
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-- or when new polymorphic built-in functions are added!
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-- Note: ignore aggregate functions here, since they all point to the same
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-- dummy built-in function.
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SELECT DISTINCT p1.prorettype, p2.prorettype
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FROM pg_proc AS p1, pg_proc AS p2
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WHERE p1.oid != p2.oid AND
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p1.prosrc = p2.prosrc AND
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p1.prolang = 12 AND p2.prolang = 12 AND
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NOT p1.proisagg AND NOT p2.proisagg AND
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(p1.prorettype < p2.prorettype);
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prorettype | prorettype
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------------+------------
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25 | 1043
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1114 | 1184
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(2 rows)
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SELECT DISTINCT p1.proargtypes[0], p2.proargtypes[0]
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FROM pg_proc AS p1, pg_proc AS p2
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WHERE p1.oid != p2.oid AND
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p1.prosrc = p2.prosrc AND
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p1.prolang = 12 AND p2.prolang = 12 AND
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NOT p1.proisagg AND NOT p2.proisagg AND
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(p1.proargtypes[0] < p2.proargtypes[0]);
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proargtypes | proargtypes
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-------------+-------------
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25 | 1042
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25 | 1043
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1114 | 1184
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1560 | 1562
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2277 | 2283
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(5 rows)
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SELECT DISTINCT p1.proargtypes[1], p2.proargtypes[1]
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FROM pg_proc AS p1, pg_proc AS p2
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WHERE p1.oid != p2.oid AND
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p1.prosrc = p2.prosrc AND
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p1.prolang = 12 AND p2.prolang = 12 AND
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NOT p1.proisagg AND NOT p2.proisagg AND
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(p1.proargtypes[1] < p2.proargtypes[1]);
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proargtypes | proargtypes
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-------------+-------------
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23 | 28
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1114 | 1184
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1560 | 1562
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2277 | 2283
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(4 rows)
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SELECT DISTINCT p1.proargtypes[2], p2.proargtypes[2]
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FROM pg_proc AS p1, pg_proc AS p2
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WHERE p1.oid != p2.oid AND
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p1.prosrc = p2.prosrc AND
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p1.prolang = 12 AND p2.prolang = 12 AND
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NOT p1.proisagg AND NOT p2.proisagg AND
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(p1.proargtypes[2] < p2.proargtypes[2]);
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proargtypes | proargtypes
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-------------+-------------
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1114 | 1184
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(1 row)
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SELECT DISTINCT p1.proargtypes[3], p2.proargtypes[3]
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FROM pg_proc AS p1, pg_proc AS p2
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WHERE p1.oid != p2.oid AND
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p1.prosrc = p2.prosrc AND
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p1.prolang = 12 AND p2.prolang = 12 AND
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NOT p1.proisagg AND NOT p2.proisagg AND
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(p1.proargtypes[3] < p2.proargtypes[3]);
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proargtypes | proargtypes
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-------------+-------------
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1114 | 1184
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(1 row)
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SELECT DISTINCT p1.proargtypes[4], p2.proargtypes[4]
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FROM pg_proc AS p1, pg_proc AS p2
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WHERE p1.oid != p2.oid AND
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p1.prosrc = p2.prosrc AND
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p1.prolang = 12 AND p2.prolang = 12 AND
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NOT p1.proisagg AND NOT p2.proisagg AND
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(p1.proargtypes[4] < p2.proargtypes[4]);
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proargtypes | proargtypes
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-------------+-------------
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(0 rows)
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SELECT DISTINCT p1.proargtypes[5], p2.proargtypes[5]
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FROM pg_proc AS p1, pg_proc AS p2
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WHERE p1.oid != p2.oid AND
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p1.prosrc = p2.prosrc AND
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p1.prolang = 12 AND p2.prolang = 12 AND
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NOT p1.proisagg AND NOT p2.proisagg AND
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(p1.proargtypes[5] < p2.proargtypes[5]);
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proargtypes | proargtypes
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-------------+-------------
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(0 rows)
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SELECT DISTINCT p1.proargtypes[6], p2.proargtypes[6]
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FROM pg_proc AS p1, pg_proc AS p2
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WHERE p1.oid != p2.oid AND
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p1.prosrc = p2.prosrc AND
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p1.prolang = 12 AND p2.prolang = 12 AND
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NOT p1.proisagg AND NOT p2.proisagg AND
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(p1.proargtypes[6] < p2.proargtypes[6]);
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proargtypes | proargtypes
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-------------+-------------
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(0 rows)
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SELECT DISTINCT p1.proargtypes[7], p2.proargtypes[7]
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FROM pg_proc AS p1, pg_proc AS p2
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WHERE p1.oid != p2.oid AND
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p1.prosrc = p2.prosrc AND
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p1.prolang = 12 AND p2.prolang = 12 AND
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NOT p1.proisagg AND NOT p2.proisagg AND
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(p1.proargtypes[7] < p2.proargtypes[7]);
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proargtypes | proargtypes
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-------------+-------------
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(0 rows)
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-- Look for functions that return type "internal" and do not have any
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-- "internal" argument. Such a function would be a security hole since
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-- it might be used to call an internal function from an SQL command.
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-- As of 7.3 this query should find only internal_in.
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SELECT p1.oid, p1.proname
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FROM pg_proc as p1
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WHERE p1.prorettype = 'internal'::regtype AND NOT
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'internal'::regtype = ANY (p1.proargtypes);
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oid | proname
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------+-------------
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2304 | internal_in
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(1 row)
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-- **************** pg_cast ****************
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-- Catch bogus values in pg_cast columns (other than cases detected by
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-- oidjoins test).
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SELECT *
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FROM pg_cast c
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WHERE castsource = 0 OR casttarget = 0 OR castcontext NOT IN ('e', 'a', 'i');
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castsource | casttarget | castfunc | castcontext
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------------+------------+----------+-------------
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(0 rows)
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-- Look for casts to/from the same type that aren't length coercion functions.
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-- (We assume they are length coercions if they take multiple arguments.)
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-- Such entries are not necessarily harmful, but they are useless.
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SELECT *
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FROM pg_cast c
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WHERE castsource = casttarget AND castfunc = 0;
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castsource | casttarget | castfunc | castcontext
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------------+------------+----------+-------------
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(0 rows)
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SELECT c.*
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FROM pg_cast c, pg_proc p
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WHERE c.castfunc = p.oid AND p.pronargs < 2 AND castsource = casttarget;
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castsource | casttarget | castfunc | castcontext
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------------+------------+----------+-------------
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(0 rows)
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-- Look for cast functions that don't have the right signature. The
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-- argument and result types in pg_proc must be the same as, or binary
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-- compatible with, what it says in pg_cast.
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-- As a special case, we allow casts from CHAR(n) that use functions
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-- declared to take TEXT. This does not pass the binary-coercibility test
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-- because CHAR(n)-to-TEXT normally invokes rtrim(). However, the results
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-- are the same, so long as the function is one that ignores trailing blanks.
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SELECT c.*
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FROM pg_cast c, pg_proc p
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WHERE c.castfunc = p.oid AND
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(p.pronargs < 1 OR p.pronargs > 3
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OR NOT (binary_coercible(c.castsource, p.proargtypes[0])
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OR (c.castsource = 'character'::regtype AND
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p.proargtypes[0] = 'text'::regtype))
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OR NOT binary_coercible(p.prorettype, c.casttarget));
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castsource | casttarget | castfunc | castcontext
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------------+------------+----------+-------------
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(0 rows)
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SELECT c.*
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FROM pg_cast c, pg_proc p
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WHERE c.castfunc = p.oid AND
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((p.pronargs > 1 AND p.proargtypes[1] != 'int4'::regtype) OR
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(p.pronargs > 2 AND p.proargtypes[2] != 'bool'::regtype));
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castsource | casttarget | castfunc | castcontext
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------------+------------+----------+-------------
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(0 rows)
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-- Look for binary compatible casts that do not have the reverse
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-- direction registered as well, or where the reverse direction is not
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-- also binary compatible. This is legal, but usually not intended.
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-- As of 7.4, this finds the casts from text and varchar to bpchar, because
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-- those are binary-compatible while the reverse way goes through rtrim().
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-- As of 8.2, this finds the cast from cidr to inet, because that is a
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-- trivial binary coercion while the other way goes through inet_to_cidr().
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-- As of 8.3, this finds the casts from xml to text, varchar, and bpchar,
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-- because those are binary-compatible while the reverse goes through
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-- texttoxml(), which does an XML syntax check.
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SELECT *
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FROM pg_cast c
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WHERE c.castfunc = 0 AND
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NOT EXISTS (SELECT 1 FROM pg_cast k
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WHERE k.castfunc = 0 AND
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k.castsource = c.casttarget AND
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k.casttarget = c.castsource);
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castsource | casttarget | castfunc | castcontext
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------------+------------+----------+-------------
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25 | 1042 | 0 | i
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1043 | 1042 | 0 | i
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650 | 869 | 0 | i
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142 | 25 | 0 | a
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142 | 1043 | 0 | a
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142 | 1042 | 0 | a
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(6 rows)
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-- **************** pg_operator ****************
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-- Look for illegal values in pg_operator fields.
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SELECT p1.oid, p1.oprname
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FROM pg_operator as p1
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WHERE (p1.oprkind != 'b' AND p1.oprkind != 'l' AND p1.oprkind != 'r') OR
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p1.oprresult = 0 OR p1.oprcode = 0;
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oid | oprname
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-----+---------
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(0 rows)
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-- Look for missing or unwanted operand types
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SELECT p1.oid, p1.oprname
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FROM pg_operator as p1
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WHERE (p1.oprleft = 0 and p1.oprkind != 'l') OR
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(p1.oprleft != 0 and p1.oprkind = 'l') OR
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(p1.oprright = 0 and p1.oprkind != 'r') OR
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(p1.oprright != 0 and p1.oprkind = 'r');
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oid | oprname
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-----+---------
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(0 rows)
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|
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-- Look for conflicting operator definitions (same names and input datatypes).
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SELECT p1.oid, p1.oprcode, p2.oid, p2.oprcode
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FROM pg_operator AS p1, pg_operator AS p2
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WHERE p1.oid != p2.oid AND
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p1.oprname = p2.oprname AND
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p1.oprkind = p2.oprkind AND
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p1.oprleft = p2.oprleft AND
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p1.oprright = p2.oprright;
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oid | oprcode | oid | oprcode
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-----+---------+-----+---------
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(0 rows)
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|
|
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-- Look for commutative operators that don't commute.
|
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-- DEFINITIONAL NOTE: If A.oprcom = B, then x A y has the same result as y B x.
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-- We expect that B will always say that B.oprcom = A as well; that's not
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-- inherently essential, but it would be inefficient not to mark it so.
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SELECT p1.oid, p1.oprcode, p2.oid, p2.oprcode
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FROM pg_operator AS p1, pg_operator AS p2
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WHERE p1.oprcom = p2.oid AND
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(p1.oprkind != 'b' OR
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p1.oprleft != p2.oprright OR
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p1.oprright != p2.oprleft OR
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p1.oprresult != p2.oprresult OR
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p1.oid != p2.oprcom);
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oid | oprcode | oid | oprcode
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-----+---------+-----+---------
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(0 rows)
|
|
|
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-- Look for negatory operators that don't agree.
|
|
-- DEFINITIONAL NOTE: If A.oprnegate = B, then both A and B must yield
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-- boolean results, and (x A y) == ! (x B y), or the equivalent for
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-- single-operand operators.
|
|
-- We expect that B will always say that B.oprnegate = A as well; that's not
|
|
-- inherently essential, but it would be inefficient not to mark it so.
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-- Also, A and B had better not be the same operator.
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SELECT p1.oid, p1.oprcode, p2.oid, p2.oprcode
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FROM pg_operator AS p1, pg_operator AS p2
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WHERE p1.oprnegate = p2.oid AND
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(p1.oprkind != p2.oprkind OR
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p1.oprleft != p2.oprleft OR
|
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p1.oprright != p2.oprright OR
|
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p1.oprresult != 'bool'::regtype OR
|
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p2.oprresult != 'bool'::regtype OR
|
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p1.oid != p2.oprnegate OR
|
|
p1.oid = p2.oid);
|
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oid | oprcode | oid | oprcode
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-----+---------+-----+---------
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|
(0 rows)
|
|
|
|
-- A mergejoinable or hashjoinable operator must be binary, must return
|
|
-- boolean, and must have a commutator (itself, unless it's a cross-type
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-- operator).
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|
SELECT p1.oid, p1.oprname FROM pg_operator AS p1
|
|
WHERE (p1.oprcanmerge OR p1.oprcanhash) AND NOT
|
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(p1.oprkind = 'b' AND p1.oprresult = 'bool'::regtype AND p1.oprcom != 0);
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oid | oprname
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|
-----+---------
|
|
(0 rows)
|
|
|
|
-- What's more, the commutator had better be mergejoinable/hashjoinable too.
|
|
SELECT p1.oid, p1.oprname, p2.oid, p2.oprname
|
|
FROM pg_operator AS p1, pg_operator AS p2
|
|
WHERE p1.oprcom = p2.oid AND
|
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(p1.oprcanmerge != p2.oprcanmerge OR
|
|
p1.oprcanhash != p2.oprcanhash);
|
|
oid | oprname | oid | oprname
|
|
-----+---------+-----+---------
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|
(0 rows)
|
|
|
|
-- Mergejoinable operators should appear as equality members of btree index
|
|
-- opfamilies.
|
|
SELECT p1.oid, p1.oprname
|
|
FROM pg_operator AS p1
|
|
WHERE p1.oprcanmerge AND NOT EXISTS
|
|
(SELECT 1 FROM pg_amop
|
|
WHERE amopmethod = (SELECT oid FROM pg_am WHERE amname = 'btree') AND
|
|
amopopr = p1.oid AND amopstrategy = 3);
|
|
oid | oprname
|
|
-----+---------
|
|
(0 rows)
|
|
|
|
-- And the converse.
|
|
SELECT p1.oid, p1.oprname, p.amopfamily
|
|
FROM pg_operator AS p1, pg_amop p
|
|
WHERE amopopr = p1.oid
|
|
AND amopmethod = (SELECT oid FROM pg_am WHERE amname = 'btree')
|
|
AND amopstrategy = 3
|
|
AND NOT p1.oprcanmerge;
|
|
oid | oprname | amopfamily
|
|
-----+---------+------------
|
|
(0 rows)
|
|
|
|
-- Hashable operators should appear as members of hash index opfamilies.
|
|
SELECT p1.oid, p1.oprname
|
|
FROM pg_operator AS p1
|
|
WHERE p1.oprcanhash AND NOT EXISTS
|
|
(SELECT 1 FROM pg_amop
|
|
WHERE amopmethod = (SELECT oid FROM pg_am WHERE amname = 'hash') AND
|
|
amopopr = p1.oid AND amopstrategy = 1);
|
|
oid | oprname
|
|
-----+---------
|
|
(0 rows)
|
|
|
|
-- And the converse.
|
|
SELECT p1.oid, p1.oprname, p.amopfamily
|
|
FROM pg_operator AS p1, pg_amop p
|
|
WHERE amopopr = p1.oid
|
|
AND amopmethod = (SELECT oid FROM pg_am WHERE amname = 'hash')
|
|
AND NOT p1.oprcanhash;
|
|
oid | oprname | amopfamily
|
|
-----+---------+------------
|
|
(0 rows)
|
|
|
|
-- Check that each operator defined in pg_operator matches its oprcode entry
|
|
-- in pg_proc. Easiest to do this separately for each oprkind.
|
|
SELECT p1.oid, p1.oprname, p2.oid, p2.proname
|
|
FROM pg_operator AS p1, pg_proc AS p2
|
|
WHERE p1.oprcode = p2.oid AND
|
|
p1.oprkind = 'b' AND
|
|
(p2.pronargs != 2
|
|
OR NOT binary_coercible(p2.prorettype, p1.oprresult)
|
|
OR NOT binary_coercible(p1.oprleft, p2.proargtypes[0])
|
|
OR NOT binary_coercible(p1.oprright, p2.proargtypes[1]));
|
|
oid | oprname | oid | proname
|
|
-----+---------+-----+---------
|
|
(0 rows)
|
|
|
|
SELECT p1.oid, p1.oprname, p2.oid, p2.proname
|
|
FROM pg_operator AS p1, pg_proc AS p2
|
|
WHERE p1.oprcode = p2.oid AND
|
|
p1.oprkind = 'l' AND
|
|
(p2.pronargs != 1
|
|
OR NOT binary_coercible(p2.prorettype, p1.oprresult)
|
|
OR NOT binary_coercible(p1.oprright, p2.proargtypes[0])
|
|
OR p1.oprleft != 0);
|
|
oid | oprname | oid | proname
|
|
-----+---------+-----+---------
|
|
(0 rows)
|
|
|
|
SELECT p1.oid, p1.oprname, p2.oid, p2.proname
|
|
FROM pg_operator AS p1, pg_proc AS p2
|
|
WHERE p1.oprcode = p2.oid AND
|
|
p1.oprkind = 'r' AND
|
|
(p2.pronargs != 1
|
|
OR NOT binary_coercible(p2.prorettype, p1.oprresult)
|
|
OR NOT binary_coercible(p1.oprleft, p2.proargtypes[0])
|
|
OR p1.oprright != 0);
|
|
oid | oprname | oid | proname
|
|
-----+---------+-----+---------
|
|
(0 rows)
|
|
|
|
-- If the operator is mergejoinable or hashjoinable, its underlying function
|
|
-- should not be volatile.
|
|
SELECT p1.oid, p1.oprname, p2.oid, p2.proname
|
|
FROM pg_operator AS p1, pg_proc AS p2
|
|
WHERE p1.oprcode = p2.oid AND
|
|
(p1.oprcanmerge OR p1.oprcanhash) AND
|
|
p2.provolatile = 'v';
|
|
oid | oprname | oid | proname
|
|
-----+---------+-----+---------
|
|
(0 rows)
|
|
|
|
-- If oprrest is set, the operator must return boolean,
|
|
-- and it must link to a proc with the right signature
|
|
-- to be a restriction selectivity estimator.
|
|
-- The proc signature we want is: float8 proc(internal, oid, internal, int4)
|
|
SELECT p1.oid, p1.oprname, p2.oid, p2.proname
|
|
FROM pg_operator AS p1, pg_proc AS p2
|
|
WHERE p1.oprrest = p2.oid AND
|
|
(p1.oprresult != 'bool'::regtype OR
|
|
p2.prorettype != 'float8'::regtype OR p2.proretset OR
|
|
p2.pronargs != 4 OR
|
|
p2.proargtypes[0] != 'internal'::regtype OR
|
|
p2.proargtypes[1] != 'oid'::regtype OR
|
|
p2.proargtypes[2] != 'internal'::regtype OR
|
|
p2.proargtypes[3] != 'int4'::regtype);
|
|
oid | oprname | oid | proname
|
|
-----+---------+-----+---------
|
|
(0 rows)
|
|
|
|
-- If oprjoin is set, the operator must be a binary boolean op,
|
|
-- and it must link to a proc with the right signature
|
|
-- to be a join selectivity estimator.
|
|
-- The proc signature we want is: float8 proc(internal, oid, internal, int2)
|
|
SELECT p1.oid, p1.oprname, p2.oid, p2.proname
|
|
FROM pg_operator AS p1, pg_proc AS p2
|
|
WHERE p1.oprjoin = p2.oid AND
|
|
(p1.oprkind != 'b' OR p1.oprresult != 'bool'::regtype OR
|
|
p2.prorettype != 'float8'::regtype OR p2.proretset OR
|
|
p2.pronargs != 4 OR
|
|
p2.proargtypes[0] != 'internal'::regtype OR
|
|
p2.proargtypes[1] != 'oid'::regtype OR
|
|
p2.proargtypes[2] != 'internal'::regtype OR
|
|
p2.proargtypes[3] != 'int2'::regtype);
|
|
oid | oprname | oid | proname
|
|
-----+---------+-----+---------
|
|
(0 rows)
|
|
|
|
-- **************** pg_aggregate ****************
|
|
-- Look for illegal values in pg_aggregate fields.
|
|
SELECT ctid, aggfnoid::oid
|
|
FROM pg_aggregate as p1
|
|
WHERE aggfnoid = 0 OR aggtransfn = 0 OR aggtranstype = 0;
|
|
ctid | aggfnoid
|
|
------+----------
|
|
(0 rows)
|
|
|
|
-- Make sure the matching pg_proc entry is sensible, too.
|
|
SELECT a.aggfnoid::oid, p.proname
|
|
FROM pg_aggregate as a, pg_proc as p
|
|
WHERE a.aggfnoid = p.oid AND
|
|
(NOT p.proisagg OR p.proretset);
|
|
aggfnoid | proname
|
|
----------+---------
|
|
(0 rows)
|
|
|
|
-- Make sure there are no proisagg pg_proc entries without matches.
|
|
SELECT oid, proname
|
|
FROM pg_proc as p
|
|
WHERE p.proisagg AND
|
|
NOT EXISTS (SELECT 1 FROM pg_aggregate a WHERE a.aggfnoid = p.oid);
|
|
oid | proname
|
|
-----+---------
|
|
(0 rows)
|
|
|
|
-- If there is no finalfn then the output type must be the transtype.
|
|
SELECT a.aggfnoid::oid, p.proname
|
|
FROM pg_aggregate as a, pg_proc as p
|
|
WHERE a.aggfnoid = p.oid AND
|
|
a.aggfinalfn = 0 AND p.prorettype != a.aggtranstype;
|
|
aggfnoid | proname
|
|
----------+---------
|
|
(0 rows)
|
|
|
|
-- Cross-check transfn against its entry in pg_proc.
|
|
-- NOTE: use physically_coercible here, not binary_coercible, because
|
|
-- max and min on abstime are implemented using int4larger/int4smaller.
|
|
SELECT a.aggfnoid::oid, p.proname, ptr.oid, ptr.proname
|
|
FROM pg_aggregate AS a, pg_proc AS p, pg_proc AS ptr
|
|
WHERE a.aggfnoid = p.oid AND
|
|
a.aggtransfn = ptr.oid AND
|
|
(ptr.proretset
|
|
OR NOT (ptr.pronargs = p.pronargs + 1)
|
|
OR NOT physically_coercible(ptr.prorettype, a.aggtranstype)
|
|
OR NOT physically_coercible(a.aggtranstype, ptr.proargtypes[0])
|
|
OR (p.pronargs > 0 AND
|
|
NOT physically_coercible(p.proargtypes[0], ptr.proargtypes[1]))
|
|
OR (p.pronargs > 1 AND
|
|
NOT physically_coercible(p.proargtypes[1], ptr.proargtypes[2]))
|
|
OR (p.pronargs > 2 AND
|
|
NOT physically_coercible(p.proargtypes[2], ptr.proargtypes[3]))
|
|
-- we could carry the check further, but that's enough for now
|
|
);
|
|
aggfnoid | proname | oid | proname
|
|
----------+---------+-----+---------
|
|
(0 rows)
|
|
|
|
-- Cross-check finalfn (if present) against its entry in pg_proc.
|
|
SELECT a.aggfnoid::oid, p.proname, pfn.oid, pfn.proname
|
|
FROM pg_aggregate AS a, pg_proc AS p, pg_proc AS pfn
|
|
WHERE a.aggfnoid = p.oid AND
|
|
a.aggfinalfn = pfn.oid AND
|
|
(pfn.proretset
|
|
OR NOT binary_coercible(pfn.prorettype, p.prorettype)
|
|
OR pfn.pronargs != 1
|
|
OR NOT binary_coercible(a.aggtranstype, pfn.proargtypes[0]));
|
|
aggfnoid | proname | oid | proname
|
|
----------+---------+-----+---------
|
|
(0 rows)
|
|
|
|
-- If transfn is strict then either initval should be non-NULL, or
|
|
-- input type should match transtype so that the first non-null input
|
|
-- can be assigned as the state value.
|
|
SELECT a.aggfnoid::oid, p.proname, ptr.oid, ptr.proname
|
|
FROM pg_aggregate AS a, pg_proc AS p, pg_proc AS ptr
|
|
WHERE a.aggfnoid = p.oid AND
|
|
a.aggtransfn = ptr.oid AND ptr.proisstrict AND
|
|
a.agginitval IS NULL AND
|
|
NOT binary_coercible(p.proargtypes[0], a.aggtranstype);
|
|
aggfnoid | proname | oid | proname
|
|
----------+---------+-----+---------
|
|
(0 rows)
|
|
|
|
-- Cross-check aggsortop (if present) against pg_operator.
|
|
-- We expect to find only "<" for "min" and ">" for "max".
|
|
SELECT DISTINCT proname, oprname
|
|
FROM pg_operator AS o, pg_aggregate AS a, pg_proc AS p
|
|
WHERE a.aggfnoid = p.oid AND a.aggsortop = o.oid
|
|
ORDER BY 1;
|
|
proname | oprname
|
|
---------+---------
|
|
max | >
|
|
min | <
|
|
(2 rows)
|
|
|
|
-- Check datatypes match
|
|
SELECT a.aggfnoid::oid, o.oid
|
|
FROM pg_operator AS o, pg_aggregate AS a, pg_proc AS p
|
|
WHERE a.aggfnoid = p.oid AND a.aggsortop = o.oid AND
|
|
(oprkind != 'b' OR oprresult != 'boolean'::regtype
|
|
OR oprleft != p.proargtypes[0] OR oprright != p.proargtypes[0]);
|
|
aggfnoid | oid
|
|
----------+-----
|
|
(0 rows)
|
|
|
|
-- Check operator is a suitable btree opfamily member
|
|
SELECT a.aggfnoid::oid, o.oid
|
|
FROM pg_operator AS o, pg_aggregate AS a, pg_proc AS p
|
|
WHERE a.aggfnoid = p.oid AND a.aggsortop = o.oid AND
|
|
NOT EXISTS(SELECT 1 FROM pg_amop
|
|
WHERE amopmethod = (SELECT oid FROM pg_am WHERE amname = 'btree')
|
|
AND amopopr = o.oid
|
|
AND amoplefttype = o.oprleft
|
|
AND amoprighttype = o.oprright);
|
|
aggfnoid | oid
|
|
----------+-----
|
|
(0 rows)
|
|
|
|
-- Check correspondence of btree strategies and names
|
|
SELECT DISTINCT proname, oprname, amopstrategy
|
|
FROM pg_operator AS o, pg_aggregate AS a, pg_proc AS p,
|
|
pg_amop as ao
|
|
WHERE a.aggfnoid = p.oid AND a.aggsortop = o.oid AND
|
|
amopopr = o.oid AND
|
|
amopmethod = (SELECT oid FROM pg_am WHERE amname = 'btree')
|
|
ORDER BY 1, 2;
|
|
proname | oprname | amopstrategy
|
|
---------+---------+--------------
|
|
max | > | 5
|
|
min | < | 1
|
|
(2 rows)
|
|
|
|
-- **************** pg_opfamily ****************
|
|
-- Look for illegal values in pg_opfamily fields
|
|
SELECT p1.oid
|
|
FROM pg_opfamily as p1
|
|
WHERE p1.opfmethod = 0 OR p1.opfnamespace = 0;
|
|
oid
|
|
-----
|
|
(0 rows)
|
|
|
|
-- **************** pg_opclass ****************
|
|
-- Look for illegal values in pg_opclass fields
|
|
SELECT p1.oid
|
|
FROM pg_opclass AS p1
|
|
WHERE p1.opcmethod = 0 OR p1.opcnamespace = 0 OR p1.opcfamily = 0
|
|
OR p1.opcintype = 0;
|
|
oid
|
|
-----
|
|
(0 rows)
|
|
|
|
-- opcmethod must match owning opfamily's opfmethod
|
|
SELECT p1.oid, p2.oid
|
|
FROM pg_opclass AS p1, pg_opfamily AS p2
|
|
WHERE p1.opcfamily = p2.oid AND p1.opcmethod != p2.opfmethod;
|
|
oid | oid
|
|
-----+-----
|
|
(0 rows)
|
|
|
|
-- There should not be multiple entries in pg_opclass with opcdefault true
|
|
-- and the same opcmethod/opcintype combination.
|
|
SELECT p1.oid, p2.oid
|
|
FROM pg_opclass AS p1, pg_opclass AS p2
|
|
WHERE p1.oid != p2.oid AND
|
|
p1.opcmethod = p2.opcmethod AND p1.opcintype = p2.opcintype AND
|
|
p1.opcdefault AND p2.opcdefault;
|
|
oid | oid
|
|
-----+-----
|
|
(0 rows)
|
|
|
|
-- **************** pg_amop ****************
|
|
-- Look for illegal values in pg_amop fields
|
|
SELECT p1.amopfamily, p1.amopstrategy
|
|
FROM pg_amop as p1
|
|
WHERE p1.amopfamily = 0 OR p1.amoplefttype = 0 OR p1.amoprighttype = 0
|
|
OR p1.amopopr = 0 OR p1.amopmethod = 0 OR p1.amopstrategy < 1;
|
|
amopfamily | amopstrategy
|
|
------------+--------------
|
|
(0 rows)
|
|
|
|
-- amoplefttype/amoprighttype must match the operator
|
|
SELECT p1.oid, p2.oid
|
|
FROM pg_amop AS p1, pg_operator AS p2
|
|
WHERE p1.amopopr = p2.oid AND NOT
|
|
(p1.amoplefttype = p2.oprleft AND p1.amoprighttype = p2.oprright);
|
|
oid | oid
|
|
-----+-----
|
|
(0 rows)
|
|
|
|
-- amopmethod must match owning opfamily's opfmethod
|
|
SELECT p1.oid, p2.oid
|
|
FROM pg_amop AS p1, pg_opfamily AS p2
|
|
WHERE p1.amopfamily = p2.oid AND p1.amopmethod != p2.opfmethod;
|
|
oid | oid
|
|
-----+-----
|
|
(0 rows)
|
|
|
|
-- Cross-check amopstrategy index against parent AM
|
|
SELECT p1.amopfamily, p1.amopopr, p2.oid, p2.amname
|
|
FROM pg_amop AS p1, pg_am AS p2
|
|
WHERE p1.amopmethod = p2.oid AND
|
|
p1.amopstrategy > p2.amstrategies AND p2.amstrategies <> 0;
|
|
amopfamily | amopopr | oid | amname
|
|
------------+---------+-----+--------
|
|
(0 rows)
|
|
|
|
-- Detect missing pg_amop entries: should have as many strategy operators
|
|
-- as AM expects for each datatype combination supported by the opfamily.
|
|
-- We can't check this for AMs with variable strategy sets.
|
|
SELECT p1.amname, p2.amoplefttype, p2.amoprighttype
|
|
FROM pg_am AS p1, pg_amop AS p2
|
|
WHERE p2.amopmethod = p1.oid AND
|
|
p1.amstrategies <> 0 AND
|
|
p1.amstrategies != (SELECT count(*) FROM pg_amop AS p3
|
|
WHERE p3.amopfamily = p2.amopfamily AND
|
|
p3.amoplefttype = p2.amoplefttype AND
|
|
p3.amoprighttype = p2.amoprighttype);
|
|
amname | amoplefttype | amoprighttype
|
|
--------+--------------+---------------
|
|
(0 rows)
|
|
|
|
-- Check that amopopr points at a reasonable-looking operator, ie a binary
|
|
-- operator yielding boolean.
|
|
SELECT p1.amopfamily, p1.amopopr, p2.oid, p2.oprname
|
|
FROM pg_amop AS p1, pg_operator AS p2
|
|
WHERE p1.amopopr = p2.oid AND
|
|
(p2.oprkind != 'b' OR p2.oprresult != 'bool'::regtype);
|
|
amopfamily | amopopr | oid | oprname
|
|
------------+---------+-----+---------
|
|
(0 rows)
|
|
|
|
-- Make a list of all the distinct operator names being used in particular
|
|
-- strategy slots. This is a bit hokey, since the list might need to change
|
|
-- in future releases, but it's an effective way of spotting mistakes such as
|
|
-- swapping two operators within a family.
|
|
SELECT DISTINCT amopmethod, amopstrategy, oprname
|
|
FROM pg_amop p1 LEFT JOIN pg_operator p2 ON amopopr = p2.oid
|
|
ORDER BY 1, 2, 3;
|
|
amopmethod | amopstrategy | oprname
|
|
------------+--------------+---------
|
|
403 | 1 | <
|
|
403 | 1 | ~<~
|
|
403 | 2 | <=
|
|
403 | 2 | ~<=~
|
|
403 | 3 | =
|
|
403 | 4 | >=
|
|
403 | 4 | ~>=~
|
|
403 | 5 | >
|
|
403 | 5 | ~>~
|
|
405 | 1 | =
|
|
783 | 1 | <<
|
|
783 | 1 | @@
|
|
783 | 2 | &<
|
|
783 | 3 | &&
|
|
783 | 4 | &>
|
|
783 | 5 | >>
|
|
783 | 6 | ~=
|
|
783 | 7 | @>
|
|
783 | 8 | <@
|
|
783 | 9 | &<|
|
|
783 | 10 | <<|
|
|
783 | 11 | |>>
|
|
783 | 12 | |&>
|
|
783 | 13 | ~
|
|
783 | 14 | @
|
|
2742 | 1 | &&
|
|
2742 | 1 | @@
|
|
2742 | 2 | @>
|
|
2742 | 2 | @@@
|
|
2742 | 3 | <@
|
|
2742 | 4 | =
|
|
(31 rows)
|
|
|
|
-- Check that all operators linked to by opclass entries have selectivity
|
|
-- estimators. This is not absolutely required, but it seems a reasonable
|
|
-- thing to insist on for all standard datatypes.
|
|
SELECT p1.amopfamily, p1.amopopr, p2.oid, p2.oprname
|
|
FROM pg_amop AS p1, pg_operator AS p2
|
|
WHERE p1.amopopr = p2.oid AND
|
|
(p2.oprrest = 0 OR p2.oprjoin = 0);
|
|
amopfamily | amopopr | oid | oprname
|
|
------------+---------+-----+---------
|
|
(0 rows)
|
|
|
|
-- Check that each opclass in an opfamily has associated operators, that is
|
|
-- ones whose oprleft matches opcintype (possibly by coercion).
|
|
SELECT p1.opcname, p1.opcfamily
|
|
FROM pg_opclass AS p1
|
|
WHERE NOT EXISTS(SELECT 1 FROM pg_amop AS p2
|
|
WHERE p2.amopfamily = p1.opcfamily
|
|
AND binary_coercible(p1.opcintype, p2.amoplefttype));
|
|
opcname | opcfamily
|
|
---------+-----------
|
|
(0 rows)
|
|
|
|
-- Operators that are primary members of opclasses must be immutable (else
|
|
-- it suggests that the index ordering isn't fixed). Operators that are
|
|
-- cross-type members need only be stable, since they are just shorthands
|
|
-- for index probe queries.
|
|
SELECT p1.amopfamily, p1.amopopr, p2.oprname, p3.prosrc
|
|
FROM pg_amop AS p1, pg_operator AS p2, pg_proc AS p3
|
|
WHERE p1.amopopr = p2.oid AND p2.oprcode = p3.oid AND
|
|
p1.amoplefttype = p1.amoprighttype AND
|
|
p3.provolatile != 'i';
|
|
amopfamily | amopopr | oprname | prosrc
|
|
------------+---------+---------+--------
|
|
(0 rows)
|
|
|
|
SELECT p1.amopfamily, p1.amopopr, p2.oprname, p3.prosrc
|
|
FROM pg_amop AS p1, pg_operator AS p2, pg_proc AS p3
|
|
WHERE p1.amopopr = p2.oid AND p2.oprcode = p3.oid AND
|
|
p1.amoplefttype != p1.amoprighttype AND
|
|
p3.provolatile = 'v';
|
|
amopfamily | amopopr | oprname | prosrc
|
|
------------+---------+---------+--------
|
|
(0 rows)
|
|
|
|
-- Multiple-datatype btree opfamilies should provide closed sets of equality
|
|
-- operators; that is if you provide int2 = int4 and int4 = int8 then you
|
|
-- should also provide int2 = int8 (and commutators of all these). This is
|
|
-- important because the planner tries to deduce additional qual clauses from
|
|
-- transitivity of mergejoinable operators. If there are clauses
|
|
-- int2var = int4var and int4var = int8var, the planner will want to deduce
|
|
-- int2var = int8var ... so there should be a way to represent that. While
|
|
-- a missing cross-type operator is now only an efficiency loss rather than
|
|
-- an error condition, it still seems reasonable to insist that all built-in
|
|
-- opfamilies be complete.
|
|
-- check commutative closure
|
|
SELECT p1.amoplefttype, p1.amoprighttype
|
|
FROM pg_amop AS p1
|
|
WHERE p1.amopmethod = (SELECT oid FROM pg_am WHERE amname = 'btree') AND
|
|
p1.amopstrategy = 3 AND
|
|
p1.amoplefttype != p1.amoprighttype AND
|
|
NOT EXISTS(SELECT 1 FROM pg_amop p2 WHERE
|
|
p2.amopfamily = p1.amopfamily AND
|
|
p2.amoplefttype = p1.amoprighttype AND
|
|
p2.amoprighttype = p1.amoplefttype AND
|
|
p2.amopstrategy = 3);
|
|
amoplefttype | amoprighttype
|
|
--------------+---------------
|
|
(0 rows)
|
|
|
|
-- check transitive closure
|
|
SELECT p1.amoplefttype, p1.amoprighttype, p2.amoprighttype
|
|
FROM pg_amop AS p1, pg_amop AS p2
|
|
WHERE p1.amopfamily = p2.amopfamily AND
|
|
p1.amoprighttype = p2.amoplefttype AND
|
|
p1.amopmethod = (SELECT oid FROM pg_am WHERE amname = 'btree') AND
|
|
p2.amopmethod = (SELECT oid FROM pg_am WHERE amname = 'btree') AND
|
|
p1.amopstrategy = 3 AND p2.amopstrategy = 3 AND
|
|
p1.amoplefttype != p1.amoprighttype AND
|
|
p2.amoplefttype != p2.amoprighttype AND
|
|
NOT EXISTS(SELECT 1 FROM pg_amop p3 WHERE
|
|
p3.amopfamily = p1.amopfamily AND
|
|
p3.amoplefttype = p1.amoplefttype AND
|
|
p3.amoprighttype = p2.amoprighttype AND
|
|
p3.amopstrategy = 3);
|
|
amoplefttype | amoprighttype | amoprighttype
|
|
--------------+---------------+---------------
|
|
(0 rows)
|
|
|
|
-- We also expect that built-in multiple-datatype hash opfamilies provide
|
|
-- complete sets of cross-type operators. Again, this isn't required, but
|
|
-- it is reasonable to expect it for built-in opfamilies.
|
|
-- if same family has x=x and y=y, it should have x=y
|
|
SELECT p1.amoplefttype, p2.amoplefttype
|
|
FROM pg_amop AS p1, pg_amop AS p2
|
|
WHERE p1.amopfamily = p2.amopfamily AND
|
|
p1.amoplefttype = p1.amoprighttype AND
|
|
p2.amoplefttype = p2.amoprighttype AND
|
|
p1.amopmethod = (SELECT oid FROM pg_am WHERE amname = 'hash') AND
|
|
p2.amopmethod = (SELECT oid FROM pg_am WHERE amname = 'hash') AND
|
|
p1.amopstrategy = 1 AND p2.amopstrategy = 1 AND
|
|
p1.amoplefttype != p2.amoplefttype AND
|
|
NOT EXISTS(SELECT 1 FROM pg_amop p3 WHERE
|
|
p3.amopfamily = p1.amopfamily AND
|
|
p3.amoplefttype = p1.amoplefttype AND
|
|
p3.amoprighttype = p2.amoplefttype AND
|
|
p3.amopstrategy = 1);
|
|
amoplefttype | amoplefttype
|
|
--------------+--------------
|
|
(0 rows)
|
|
|
|
-- **************** pg_amproc ****************
|
|
-- Look for illegal values in pg_amproc fields
|
|
SELECT p1.amprocfamily, p1.amprocnum
|
|
FROM pg_amproc as p1
|
|
WHERE p1.amprocfamily = 0 OR p1.amproclefttype = 0 OR p1.amprocrighttype = 0
|
|
OR p1.amprocnum < 1 OR p1.amproc = 0;
|
|
amprocfamily | amprocnum
|
|
--------------+-----------
|
|
(0 rows)
|
|
|
|
-- Cross-check amprocnum index against parent AM
|
|
SELECT p1.amprocfamily, p1.amprocnum, p2.oid, p2.amname
|
|
FROM pg_amproc AS p1, pg_am AS p2, pg_opfamily AS p3
|
|
WHERE p1.amprocfamily = p3.oid AND p3.opfmethod = p2.oid AND
|
|
p1.amprocnum > p2.amsupport;
|
|
amprocfamily | amprocnum | oid | amname
|
|
--------------+-----------+-----+--------
|
|
(0 rows)
|
|
|
|
-- Detect missing pg_amproc entries: should have as many support functions
|
|
-- as AM expects for each datatype combination supported by the opfamily.
|
|
-- GIN is a special case because it has an optional support function.
|
|
SELECT p1.amname, p2.opfname, p3.amproclefttype, p3.amprocrighttype
|
|
FROM pg_am AS p1, pg_opfamily AS p2, pg_amproc AS p3
|
|
WHERE p2.opfmethod = p1.oid AND p3.amprocfamily = p2.oid AND
|
|
p1.amname <> 'gin' AND
|
|
p1.amsupport != (SELECT count(*) FROM pg_amproc AS p4
|
|
WHERE p4.amprocfamily = p2.oid AND
|
|
p4.amproclefttype = p3.amproclefttype AND
|
|
p4.amprocrighttype = p3.amprocrighttype);
|
|
amname | opfname | amproclefttype | amprocrighttype
|
|
--------+---------+----------------+-----------------
|
|
(0 rows)
|
|
|
|
-- Similar check for GIN, allowing one optional proc
|
|
SELECT p1.amname, p2.opfname, p3.amproclefttype, p3.amprocrighttype
|
|
FROM pg_am AS p1, pg_opfamily AS p2, pg_amproc AS p3
|
|
WHERE p2.opfmethod = p1.oid AND p3.amprocfamily = p2.oid AND
|
|
p1.amname = 'gin' AND
|
|
p1.amsupport - 1 > (SELECT count(*) FROM pg_amproc AS p4
|
|
WHERE p4.amprocfamily = p2.oid AND
|
|
p4.amproclefttype = p3.amproclefttype AND
|
|
p4.amprocrighttype = p3.amprocrighttype);
|
|
amname | opfname | amproclefttype | amprocrighttype
|
|
--------+---------+----------------+-----------------
|
|
(0 rows)
|
|
|
|
-- Also, check if there are any pg_opclass entries that don't seem to have
|
|
-- pg_amproc support. Again, GIN has to be checked separately.
|
|
SELECT amname, opcname, count(*)
|
|
FROM pg_am am JOIN pg_opclass op ON opcmethod = am.oid
|
|
LEFT JOIN pg_amproc p ON amprocfamily = opcfamily AND
|
|
amproclefttype = amprocrighttype AND amproclefttype = opcintype
|
|
WHERE am.amname <> 'gin'
|
|
GROUP BY amname, amsupport, opcname, amprocfamily
|
|
HAVING count(*) != amsupport OR amprocfamily IS NULL;
|
|
amname | opcname | count
|
|
--------+---------+-------
|
|
(0 rows)
|
|
|
|
SELECT amname, opcname, count(*)
|
|
FROM pg_am am JOIN pg_opclass op ON opcmethod = am.oid
|
|
LEFT JOIN pg_amproc p ON amprocfamily = opcfamily AND
|
|
amproclefttype = amprocrighttype AND amproclefttype = opcintype
|
|
WHERE am.amname = 'gin'
|
|
GROUP BY amname, amsupport, opcname, amprocfamily
|
|
HAVING count(*) < amsupport - 1 OR amprocfamily IS NULL;
|
|
amname | opcname | count
|
|
--------+---------+-------
|
|
(0 rows)
|
|
|
|
-- Unfortunately, we can't check the amproc link very well because the
|
|
-- signature of the function may be different for different support routines
|
|
-- or different base data types.
|
|
-- We can check that all the referenced instances of the same support
|
|
-- routine number take the same number of parameters, but that's about it
|
|
-- for a general check...
|
|
SELECT p1.amprocfamily, p1.amprocnum,
|
|
p2.oid, p2.proname,
|
|
p3.opfname,
|
|
p4.amprocfamily, p4.amprocnum,
|
|
p5.oid, p5.proname,
|
|
p6.opfname
|
|
FROM pg_amproc AS p1, pg_proc AS p2, pg_opfamily AS p3,
|
|
pg_amproc AS p4, pg_proc AS p5, pg_opfamily AS p6
|
|
WHERE p1.amprocfamily = p3.oid AND p4.amprocfamily = p6.oid AND
|
|
p3.opfmethod = p6.opfmethod AND p1.amprocnum = p4.amprocnum AND
|
|
p1.amproc = p2.oid AND p4.amproc = p5.oid AND
|
|
(p2.proretset OR p5.proretset OR p2.pronargs != p5.pronargs);
|
|
amprocfamily | amprocnum | oid | proname | opfname | amprocfamily | amprocnum | oid | proname | opfname
|
|
--------------+-----------+-----+---------+---------+--------------+-----------+-----+---------+---------
|
|
(0 rows)
|
|
|
|
-- For btree, though, we can do better since we know the support routines
|
|
-- must be of the form cmp(lefttype, righttype) returns int4.
|
|
SELECT p1.amprocfamily, p1.amprocnum,
|
|
p2.oid, p2.proname,
|
|
p3.opfname
|
|
FROM pg_amproc AS p1, pg_proc AS p2, pg_opfamily AS p3
|
|
WHERE p3.opfmethod = (SELECT oid FROM pg_am WHERE amname = 'btree')
|
|
AND p1.amprocfamily = p3.oid AND p1.amproc = p2.oid AND
|
|
(amprocnum != 1
|
|
OR proretset
|
|
OR prorettype != 'int4'::regtype
|
|
OR pronargs != 2
|
|
OR proargtypes[0] != amproclefttype
|
|
OR proargtypes[1] != amprocrighttype);
|
|
amprocfamily | amprocnum | oid | proname | opfname
|
|
--------------+-----------+-----+---------+---------
|
|
(0 rows)
|
|
|
|
-- For hash we can also do a little better: the support routines must be
|
|
-- of the form hash(lefttype) returns int4. There are several cases where
|
|
-- we cheat and use a hash function that is physically compatible with the
|
|
-- datatype even though there's no cast, so this check does find a small
|
|
-- number of entries.
|
|
SELECT p1.amprocfamily, p1.amprocnum, p2.proname, p3.opfname
|
|
FROM pg_amproc AS p1, pg_proc AS p2, pg_opfamily AS p3
|
|
WHERE p3.opfmethod = (SELECT oid FROM pg_am WHERE amname = 'hash')
|
|
AND p1.amprocfamily = p3.oid AND p1.amproc = p2.oid AND
|
|
(amprocnum != 1
|
|
OR proretset
|
|
OR prorettype != 'int4'::regtype
|
|
OR pronargs != 1
|
|
OR NOT physically_coercible(amproclefttype, proargtypes[0])
|
|
OR amproclefttype != amprocrighttype)
|
|
ORDER BY 1;
|
|
amprocfamily | amprocnum | proname | opfname
|
|
--------------+-----------+----------------+-----------------
|
|
435 | 1 | hashint4 | date_ops
|
|
1999 | 1 | timestamp_hash | timestamptz_ops
|
|
2222 | 1 | hashchar | bool_ops
|
|
2223 | 1 | hashvarlena | bytea_ops
|
|
2225 | 1 | hashint4 | xid_ops
|
|
2226 | 1 | hashint4 | cid_ops
|
|
(6 rows)
|
|
|
|
-- Support routines that are primary members of opfamilies must be immutable
|
|
-- (else it suggests that the index ordering isn't fixed). But cross-type
|
|
-- members need only be stable, since they are just shorthands
|
|
-- for index probe queries.
|
|
SELECT p1.amprocfamily, p1.amproc, p2.prosrc
|
|
FROM pg_amproc AS p1, pg_proc AS p2
|
|
WHERE p1.amproc = p2.oid AND
|
|
p1.amproclefttype = p1.amprocrighttype AND
|
|
p2.provolatile != 'i';
|
|
amprocfamily | amproc | prosrc
|
|
--------------+--------+--------
|
|
(0 rows)
|
|
|
|
SELECT p1.amprocfamily, p1.amproc, p2.prosrc
|
|
FROM pg_amproc AS p1, pg_proc AS p2
|
|
WHERE p1.amproc = p2.oid AND
|
|
p1.amproclefttype != p1.amprocrighttype AND
|
|
p2.provolatile = 'v';
|
|
amprocfamily | amproc | prosrc
|
|
--------------+--------+--------
|
|
(0 rows)
|
|
|