Tom Lane 5b7b5518d0 Revise parameterized-path mechanism to fix assorted issues. ... This patch adjusts the treatment of parameterized paths so that all paths with the same parameterization (same set of required outer rels) for the same relation will have the same rowcount estimate. We cache the rowcount estimates to ensure that property, and hopefully save a few cycles too. Doing this makes it practical for add_path_precheck to operate without a rowcount estimate: it need only assume that paths with different parameterizations never dominate each other, which is close enough to true anyway for coarse filtering, because normally a more-parameterized path should yield fewer rows thanks to having more join clauses to apply. In add_path, we do the full nine yards of comparing rowcount estimates along with everything else, so that we can discard parameterized paths that don't actually have an advantage. This fixes some issues I'd found with add_path rejecting parameterized paths on the grounds that they were more expensive than not-parameterized ones, even though they yielded many fewer rows and hence would be cheaper once subsequent joining was considered. To make the same-rowcounts assumption valid, we have to require that any parameterized path enforce *all* join clauses that could be obtained from the particular set of outer rels, even if not all of them are useful for indexing. This is required at both base scans and joins. It's a good thing anyway since the net impact is that join quals are checked at the lowest practical level in the join tree. Hence, discard the original rather ad-hoc mechanism for choosing parameterization joinquals, and build a better one that has a more principled rule for when clauses can be moved. The original rule was actually buggy anyway for lack of knowledge about which relations are part of an outer join's outer side; getting this right requires adding an outer_relids field to RestrictInfo.		2012-04-19 15:53:47 -04:00
..
.gitignore	Add a SECURITY LABEL command.	2010-09-27 20:55:27 -04:00
abstime.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
advisory_lock.sql	Add transaction-level advisory locks.	2011-02-18 14:05:12 +09:00
aggregates.sql	Rename bytea_agg to string_agg and add delimiter argument	2012-04-13 21:36:59 +03:00
alter_table.sql	Add support for renaming constraints	2012-03-10 20:19:13 +02:00
arrays.sql	Collect and use element-frequency statistics for arrays.	2012-03-03 20:20:57 -05:00
bit.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
bitmapops.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
boolean.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
box.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
btree_index.sql	Fix breakage of bitmap scan plan creation for special index operators such	2008-11-20 19:52:54 +00:00
case.sql	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
char.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
circle.sql	Support ORDER BY ... NULLS FIRST/LAST, and add ASC/DESC/NULLS FIRST/NULLS LAST	2007-01-09 02:14:16 +00:00
cluster.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
collate.linux.utf8.sql	Support range data types.	2011-11-03 13:42:15 +02:00
collate.sql	Add COLLATION FOR expression	2012-03-02 21:12:16 +02:00
combocid.sql	Avoid incrementing the CommandCounter when CommandCounterIncrement is called	2007-11-30 21:22:54 +00:00
comments.sql	Implement nested block comments in the backend and in psql.	2000-07-14 15:43:57 +00:00
conversion.sql	Support hex-string input and output for type BYTEA.	2009-08-04 16:08:37 +00:00
copy2.sql	Fix COPY FROM for null marker strings that correspond to invalid encoding.	2012-03-25 23:17:22 -04:00
copyselect.sql	Have \copy go through SendQuery	2012-01-25 18:22:00 -03:00
create_aggregate.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
create_cast.sql	Add test case for CREATE CAST.	2008-10-31 09:17:17 +00:00
create_function_3.sql	More regression tests for LEAKPROOF/NOT LEAKPROOF stuff.	2012-02-15 10:56:26 -05:00
create_index.sql	Add DROP INDEX CONCURRENTLY [IF EXISTS], uses ShareUpdateExclusiveLock	2012-04-06 10:21:40 +01:00
create_misc.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
create_operator.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
create_table_like.sql	Allow CREATE TABLE (LIKE ...) from composite type	2012-03-03 16:03:05 +02:00
create_table.sql	Fix another bit of unlogged-table-induced breakage.	2011-09-21 10:48:31 -04:00
create_type.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
create_view.sql	Add a security_barrier option for views.	2011-12-22 16:16:31 -05:00
date.sql	Extend the date type to support infinity and -infinity, analogously to	2008-10-14 17:12:33 +00:00
delete.sql	Regression tests for TOAST.	2011-04-25 09:48:10 -04:00
dependency.sql	Create a separate grantable privilege for TRUNCATE, rather than having it be	2008-09-08 00:47:41 +00:00
domain.sql	Add support for renaming domain constraints	2012-04-03 08:11:51 +03:00
drop_if_exists.sql	Remove a few of the new DROP-IF-EXISTS regression tests.	2011-10-19 23:38:06 -04:00
drop.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
enum.sql	Require VALUE keyword when extending an enum type. Based on a patch from Alvaro Herrera.	2010-11-16 22:18:33 -05:00
errors.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
euc_cn.sql	Hi, here are the patches to enhance existing MB handling. This time	1998-06-16 07:29:54 +00:00
euc_jp.sql	From: t-ishii@sra.co.jp	1998-04-27 17:10:50 +00:00
euc_kr.sql	Hi, here are the patches to enhance existing MB handling. This time	1998-06-16 07:29:54 +00:00
euc_tw.sql	Add missing mb files.	1999-02-02 19:04:43 +00:00
float4.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
float8.sql	Revert "Add some regression test cases for denormalized float8 input."	2012-02-04 15:52:09 -05:00
foreign_data.sql	Allow statistics to be collected for foreign tables.	2012-04-06 15:02:35 -04:00
foreign_key.sql	Change FK trigger creation order to better support self-referential FKs.	2011-10-26 13:02:28 -04:00
functional_deps.sql	Recognize functional dependency on primary keys. This allows a table's	2010-08-07 02:44:09 +00:00
geometry.sql	Stop a few regression tests from needlessly disabling GEQO. This was	2007-05-29 04:17:08 +00:00
guc.sql	Silently ignore any nonexistent schemas that are listed in search_path.	2012-04-11 12:02:50 -04:00
hash_index.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
horology.sql	On second thought, we'd better just drop these tests altogether.	2011-11-06 20:12:20 -05:00
hs_primary_extremes.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
hs_primary_setup.sql	Allow read only connections during recovery, known as Hot Standby.	2009-12-19 01:32:45 +00:00
hs_standby_allowed.sql	Allow read only connections during recovery, known as Hot Standby.	2009-12-19 01:32:45 +00:00
hs_standby_check.sql	Allow read only connections during recovery, known as Hot Standby.	2009-12-19 01:32:45 +00:00
hs_standby_disallowed.sql	Allow read only connections during recovery, known as Hot Standby.	2009-12-19 01:32:45 +00:00
hs_standby_functions.sql	Allow read only connections during recovery, known as Hot Standby.	2009-12-19 01:32:45 +00:00
inet.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
inherit.sql	Revise parameterized-path mechanism to fix assorted issues.	2012-04-19 15:53:47 -04:00
insert.sql	Regression tests for TOAST.	2011-04-25 09:48:10 -04:00
int2.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
int4.sql	Attempt to fix breakage caused by signed integer conversion patch.	2010-11-20 01:09:26 -05:00
int8.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
interval.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
join.sql	Revise parameterized-path mechanism to fix assorted issues.	2012-04-19 15:53:47 -04:00
json.sql	Fix a couple of cases of JSON output.	2012-02-20 15:01:03 -05:00
limit.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
lseg.sql	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
macaddr.sql	Add bitwise AND, OR, and NOT operators for macaddr data type.	2012-01-19 15:25:14 -05:00
money.sql	Add casts from int4 and int8 to numeric.	2011-04-05 09:35:43 -04:00
mule_internal.sql	Hi, here are the patches to enhance existing MB handling. This time	1998-06-16 07:29:54 +00:00
name.sql	Add a "USING" clause to DELETE, which is equivalent to the FROM clause	2005-04-07 01:51:41 +00:00
namespace.sql	Add CREATE TRIGGER, CREATE INDEX, and CREATE SEQUENCE to the list of	2004-01-11 04:58:17 +00:00
numeric_big.sql	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
numeric.sql	Fix corner case bug in numeric to_char().	2011-09-07 17:07:20 -04:00
numerology.sql	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
oid.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
oidjoins.sql	Update oidjoins regression test to match git HEAD.	2011-11-14 20:28:38 -05:00
opr_sanity.sql	Code review for protransform patches.	2012-03-23 17:29:57 -04:00
path.sql	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
plancache.sql	Repair bug that allowed RevalidateCachedPlan to attempt to rebuild a cached	2007-11-30 18:38:34 +00:00
plpgsql.sql	Fix plpgsql named-cursor-parameter feature for variable name conflicts.	2012-04-04 21:50:31 -04:00
point.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
polygon.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
polymorphism.sql	Fix getTypeIOParam to support type record[].	2011-12-01 12:44:16 -05:00
portals_p2.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
portals.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
prepare.sql	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
prepared_xacts.sql	Fix a bug with SSI and prepared transactions:	2011-07-07 18:12:15 +03:00
privileges.sql	Add support for privileges on types	2011-12-20 00:05:19 +02:00
random.sql	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
rangefuncs.sql	Prevent inlining a SQL function with multiple OUT parameters.	2010-12-01 00:53:18 -05:00
rangetypes.sql	Remove zero- and one-argument range constructor functions.	2011-11-22 20:45:05 -05:00
regex.sql	Fix the general case of quantified regex back-references.	2012-02-24 01:41:03 -05:00
reltime.sql	Add a "USING" clause to DELETE, which is equivalent to the FROM clause	2005-04-07 01:51:41 +00:00
returning.sql	Apply a simple solution to the problem of making INSERT/UPDATE/DELETE	2006-09-02 17:06:52 +00:00
rowtypes.sql	Fix failure to check whether a rowtype's component types are sortable.	2011-06-03 15:39:17 -04:00
rules.sql	Improve pretty printing of viewdefs.	2012-02-19 11:43:46 -05:00
sanity_check.sql	Support deferrable uniqueness constraints.	2009-07-29 20:56:21 +00:00
select_distinct_on.sql	Fix assertion failure when a SELECT DISTINCT ON expression is volatile.	2009-09-12 00:04:59 +00:00
select_distinct.sql	Alter some gratuitous uses of "ANSI" when "SQL standard" might have been	2009-07-11 21:15:32 +00:00
select_having.sql	Make the behavior of HAVING without GROUP BY conform to the SQL spec.	2005-03-10 23:21:26 +00:00
select_implicit.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
select_into.sql	Restructure SELECT INTO's parsetree representation into CreateTableAsStmt.	2012-03-19 21:38:12 -04:00
select_views.sql	Allow LEAKPROOF functions for better performance of security views.	2012-02-13 22:21:14 -05:00
select.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
sequence.sql	ALTER <thing> [IF EXISTS] ... allows silent DDL if required,	2012-01-23 23:25:04 +00:00
sql_ascii.sql	Add SQL_ASCII encoding test case	2000-03-06 01:29:54 +00:00
stats.sql	Prevent index-only scans in stats regression test.	2011-10-08 23:45:58 -04:00
strings.sql	Rewrite LIKE's %-followed-by-_ optimization so it really works (this time	2010-05-28 17:35:23 +00:00
subselect.sql	Unify spelling of "canceled", "canceling", "cancellation"	2011-06-29 09:28:46 +03:00
temp.sql	Don't refer to the database name "regression" inside the regression test	2008-07-03 16:01:10 +00:00
text.sql	Put back accidentally-deleted quote_literal() regression tests.	2010-11-21 20:46:54 -05:00
time.sql	Please find attached two patches for documentation and regression tests	2006-07-06 01:46:38 +00:00
timestamp.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
timestamptz.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
timetz.sql	Please find attached two patches for documentation and regression tests	2006-07-06 01:46:38 +00:00
tinterval.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
transactions.sql	Run a portal's cleanup hook immediately when pushing it to FAILED state.	2012-02-15 16:19:01 -05:00
triggers.sql	Add pg_trigger_depth() function	2012-01-25 13:22:54 -03:00
truncate.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
tsdicts.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
tsearch.sql	Fix gincostestimate to handle ScalarArrayOpExpr reasonably.	2011-12-20 19:57:34 -05:00
tstypes.sql	Extend GIN to support partial-match searches, and extend tsquery to support	2008-05-16 16:31:02 +00:00
txid.sql	Migrate the former contrib/txid module into core. This will make it easier	2007-10-13 23:06:28 +00:00
type_sanity.sql	Collect and use element-frequency statistics for arrays.	2012-03-03 20:20:57 -05:00
typed_table.sql	Only allow typed tables to hang off composite types, not e.g. tables.	2011-04-18 10:19:46 -04:00
union.sql	Revisit handling of UNION ALL subqueries with non-Var output columns.	2012-03-16 13:11:55 -04:00
update.sql	Regression tests for TOAST.	2011-04-25 09:48:10 -04:00
uuid.sql	Rewrite uuid input and output routines to avoid dependency on the	2007-01-31 19:33:54 +00:00
vacuum.sql	Remove old-style VACUUM FULL (which was known for a little while as	2010-02-08 04:33:55 +00:00
varchar.sql	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
window.sql	Measure the number of all-visible pages for use in index-only scan costing.	2011-10-14 17:23:46 -04:00
with.sql	Fix handling of init_plans list in inheritance_planner().	2012-01-28 20:24:42 -05:00
without_oid.sql	Combine cmin and cmax fields of HeapTupleHeaders into a single field, by	2007-02-09 03:35:35 +00:00
xml.sql	Make xpath() do something useful with XPath expressions that return scalars.	2011-07-21 11:32:46 -04:00
xmlmap.sql	Regression test for XML mapping functionality	2009-07-02 07:03:18 +00:00