152 lines
4.1 KiB
Plaintext
152 lines
4.1 KiB
Plaintext
---------------------------------------------------------------------------
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--
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-- syscat.sql-
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-- sample queries to the system catalogs
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--
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--
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-- Copyright (c) 1994, Regents of the University of California
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--
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-- $Id: syscat.source,v 1.3 1998/03/20 04:12:25 momjian Exp $
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--
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---------------------------------------------------------------------------
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--
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-- lists the name of all database adminstrators and the name of their
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-- database(s)
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--
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SELECT usename, datname
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FROM pg_user, pg_database
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WHERE usesysid = int2in(int4out(datdba))
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ORDER BY usename, datname;
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--
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-- lists all user-defined classes
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--
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SELECT relname
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FROM pg_class
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WHERE relkind = 'r' -- not indices
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and relname !~ '^pg_' -- not catalogs
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and relname !~ '^Inv' -- not large objects
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ORDER BY relname;
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--
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-- lists all simple indicies (ie. those that are not defined over a function
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-- of several attributes)
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--
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SELECT bc.relname AS class_name,
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ic.relname AS index_name,
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a.attname
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FROM pg_class bc, -- base class
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pg_class ic, -- index class
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pg_index i,
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pg_attribute a -- att in base
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WHERE i.indrelid = bc.oid
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and i.indexrelid = ic.oid
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and i.indkey[0] = a.attnum
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and a.attrelid = bc.oid
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and i.indproc = '0'::oid -- no functional indices
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ORDER BY class_name, index_name, attname;
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--
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-- lists the user-defined attributes and their types for all user-defined
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-- classes
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--
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SELECT c.relname, a.attname, t.typname
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FROM pg_class c, pg_attribute a, pg_type t
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WHERE c.relkind = 'r' -- no indices
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and c.relname !~ '^pg_' -- no catalogs
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and c.relname !~ '^Inv' -- no large objects
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and a.attnum > 0 -- no system att's
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and a.attrelid = c.oid
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and a.atttypid = t.oid
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ORDER BY relname, attname;
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--
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-- lists all user-defined base types (not including array types)
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--
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SELECT u.usename, t.typname
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FROM pg_type t, pg_user u
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WHERE u.usesysid = int2in(int4out(t.typowner))
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and t.typrelid = '0'::oid -- no complex types
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and t.typelem = '0'::oid -- no arrays
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and u.usename <> 'postgres'
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ORDER BY usename, typname;
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--
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-- lists all left unary operators
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--
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SELECT o.oprname AS left_unary,
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right_type.typname AS operand,
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result.typname AS return_type
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FROM pg_operator o, pg_type right_type, pg_type result
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WHERE o.oprkind = 'l' -- left unary
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and o.oprright = right_type.oid
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and o.oprresult = result.oid
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ORDER BY operand;
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--
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-- lists all right unary operators
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--
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SELECT o.oprname AS right_unary,
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left_type.typname AS operand,
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result.typname AS return_type
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FROM pg_operator o, pg_type left_type, pg_type result
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WHERE o.oprkind = 'r' -- right unary
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and o.oprleft = left_type.oid
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and o.oprresult = result.oid
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ORDER BY operand;
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--
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-- lists all binary operators
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--
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SELECT o.oprname AS binary_op,
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left_type.typname AS left_opr,
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right_type.typname AS right_opr,
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result.typname AS return_type
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FROM pg_operator o, pg_type left_type, pg_type right_type, pg_type result
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WHERE o.oprkind = 'b' -- binary
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and o.oprleft = left_type.oid
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and o.oprright = right_type.oid
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and o.oprresult = result.oid
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ORDER BY left_opr, right_opr;
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--
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-- lists the name, number of arguments and the return type of all user-defined
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-- C functions
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--
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SELECT p.proname, p.pronargs, t.typname
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FROM pg_proc p, pg_language l, pg_type t
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WHERE p.prolang = l.oid
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and p.prorettype = t.oid
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and l.lanname = 'c'
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ORDER BY proname;
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--
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-- lists all aggregate functions and the types to which they can be applied
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--
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SELECT a.aggname, t.typname
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FROM pg_aggregate a, pg_type t
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WHERE a.aggbasetype = t.oid
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ORDER BY aggname, typname;
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--
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-- lists all the operator classes that can be used with each access method
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-- as well as the operators that cn be used with the respective operator
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-- classes
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--
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SELECT am.amname, opc.opcname, opr.oprname
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FROM pg_am am, pg_amop amop, pg_opclass opc, pg_operator opr
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WHERE amop.amopid = am.oid
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and amop.amopclaid = opc.oid
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and amop.amopopr = opr.oid
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ORDER BY amname, opcname, oprname;
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