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aa8a2c3a61
Before jamming a desired targetlist into a plan node, one really ought to
make sure the plan node can handle projections, and insert a buffering
Result plan node if not. planagg.c forgot to do this, which is a hangover
from the days when it only dealt with IndexScan plan types. MergeAppend
doesn't project though, not to mention that it gets unhappy if you remove
its possibly-resjunk sort columns. The code accidentally failed to fail
for cases in which the min/max argument was a simple Var, because the new
targetlist would be equivalent to the original "flat" tlist anyway.
For any more complex case, it's been broken since 9.1 where we introduced
the ability to optimize min/max using MergeAppend, as reported by Raphael
Bauduin. Fix by duplicating the logic from grouping_planner that decides
whether we need a Result node.
In 9.2 and 9.1, this requires back-porting the tlist_same_exprs() function
introduced in commit 4387cf956b, else we'd
uselessly add a Result node in cases that worked before. It's rather
tempting to back-patch that whole commit so that we can avoid extra Result
nodes in mainline cases too; but I'll refrain, since that code hasn't
really seen all that much field testing yet.
449 lines
17 KiB
SQL
449 lines
17 KiB
SQL
--
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-- Test inheritance features
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--
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CREATE TABLE a (aa TEXT);
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CREATE TABLE b (bb TEXT) INHERITS (a);
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CREATE TABLE c (cc TEXT) INHERITS (a);
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CREATE TABLE d (dd TEXT) INHERITS (b,c,a);
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INSERT INTO a(aa) VALUES('aaa');
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INSERT INTO a(aa) VALUES('aaaa');
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INSERT INTO a(aa) VALUES('aaaaa');
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INSERT INTO a(aa) VALUES('aaaaaa');
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INSERT INTO a(aa) VALUES('aaaaaaa');
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INSERT INTO a(aa) VALUES('aaaaaaaa');
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INSERT INTO b(aa) VALUES('bbb');
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INSERT INTO b(aa) VALUES('bbbb');
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INSERT INTO b(aa) VALUES('bbbbb');
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INSERT INTO b(aa) VALUES('bbbbbb');
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INSERT INTO b(aa) VALUES('bbbbbbb');
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INSERT INTO b(aa) VALUES('bbbbbbbb');
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INSERT INTO c(aa) VALUES('ccc');
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INSERT INTO c(aa) VALUES('cccc');
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INSERT INTO c(aa) VALUES('ccccc');
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INSERT INTO c(aa) VALUES('cccccc');
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INSERT INTO c(aa) VALUES('ccccccc');
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INSERT INTO c(aa) VALUES('cccccccc');
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INSERT INTO d(aa) VALUES('ddd');
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INSERT INTO d(aa) VALUES('dddd');
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INSERT INTO d(aa) VALUES('ddddd');
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INSERT INTO d(aa) VALUES('dddddd');
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INSERT INTO d(aa) VALUES('ddddddd');
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INSERT INTO d(aa) VALUES('dddddddd');
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SELECT relname, a.* FROM a, pg_class where a.tableoid = pg_class.oid;
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SELECT relname, b.* FROM b, pg_class where b.tableoid = pg_class.oid;
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SELECT relname, c.* FROM c, pg_class where c.tableoid = pg_class.oid;
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SELECT relname, d.* FROM d, pg_class where d.tableoid = pg_class.oid;
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SELECT relname, a.* FROM ONLY a, pg_class where a.tableoid = pg_class.oid;
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SELECT relname, b.* FROM ONLY b, pg_class where b.tableoid = pg_class.oid;
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SELECT relname, c.* FROM ONLY c, pg_class where c.tableoid = pg_class.oid;
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SELECT relname, d.* FROM ONLY d, pg_class where d.tableoid = pg_class.oid;
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UPDATE a SET aa='zzzz' WHERE aa='aaaa';
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UPDATE ONLY a SET aa='zzzzz' WHERE aa='aaaaa';
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UPDATE b SET aa='zzz' WHERE aa='aaa';
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UPDATE ONLY b SET aa='zzz' WHERE aa='aaa';
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UPDATE a SET aa='zzzzzz' WHERE aa LIKE 'aaa%';
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SELECT relname, a.* FROM a, pg_class where a.tableoid = pg_class.oid;
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SELECT relname, b.* FROM b, pg_class where b.tableoid = pg_class.oid;
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SELECT relname, c.* FROM c, pg_class where c.tableoid = pg_class.oid;
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SELECT relname, d.* FROM d, pg_class where d.tableoid = pg_class.oid;
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SELECT relname, a.* FROM ONLY a, pg_class where a.tableoid = pg_class.oid;
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SELECT relname, b.* FROM ONLY b, pg_class where b.tableoid = pg_class.oid;
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SELECT relname, c.* FROM ONLY c, pg_class where c.tableoid = pg_class.oid;
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SELECT relname, d.* FROM ONLY d, pg_class where d.tableoid = pg_class.oid;
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UPDATE b SET aa='new';
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SELECT relname, a.* FROM a, pg_class where a.tableoid = pg_class.oid;
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SELECT relname, b.* FROM b, pg_class where b.tableoid = pg_class.oid;
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SELECT relname, c.* FROM c, pg_class where c.tableoid = pg_class.oid;
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SELECT relname, d.* FROM d, pg_class where d.tableoid = pg_class.oid;
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SELECT relname, a.* FROM ONLY a, pg_class where a.tableoid = pg_class.oid;
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SELECT relname, b.* FROM ONLY b, pg_class where b.tableoid = pg_class.oid;
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SELECT relname, c.* FROM ONLY c, pg_class where c.tableoid = pg_class.oid;
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SELECT relname, d.* FROM ONLY d, pg_class where d.tableoid = pg_class.oid;
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UPDATE a SET aa='new';
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DELETE FROM ONLY c WHERE aa='new';
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SELECT relname, a.* FROM a, pg_class where a.tableoid = pg_class.oid;
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SELECT relname, b.* FROM b, pg_class where b.tableoid = pg_class.oid;
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SELECT relname, c.* FROM c, pg_class where c.tableoid = pg_class.oid;
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SELECT relname, d.* FROM d, pg_class where d.tableoid = pg_class.oid;
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SELECT relname, a.* FROM ONLY a, pg_class where a.tableoid = pg_class.oid;
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SELECT relname, b.* FROM ONLY b, pg_class where b.tableoid = pg_class.oid;
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SELECT relname, c.* FROM ONLY c, pg_class where c.tableoid = pg_class.oid;
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SELECT relname, d.* FROM ONLY d, pg_class where d.tableoid = pg_class.oid;
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DELETE FROM a;
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SELECT relname, a.* FROM a, pg_class where a.tableoid = pg_class.oid;
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SELECT relname, b.* FROM b, pg_class where b.tableoid = pg_class.oid;
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SELECT relname, c.* FROM c, pg_class where c.tableoid = pg_class.oid;
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SELECT relname, d.* FROM d, pg_class where d.tableoid = pg_class.oid;
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SELECT relname, a.* FROM ONLY a, pg_class where a.tableoid = pg_class.oid;
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SELECT relname, b.* FROM ONLY b, pg_class where b.tableoid = pg_class.oid;
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SELECT relname, c.* FROM ONLY c, pg_class where c.tableoid = pg_class.oid;
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SELECT relname, d.* FROM ONLY d, pg_class where d.tableoid = pg_class.oid;
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-- Confirm PRIMARY KEY adds NOT NULL constraint to child table
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CREATE TEMP TABLE z (b TEXT, PRIMARY KEY(aa, b)) inherits (a);
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INSERT INTO z VALUES (NULL, 'text'); -- should fail
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-- Check UPDATE with inherited target and an inherited source table
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create temp table foo(f1 int, f2 int);
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create temp table foo2(f3 int) inherits (foo);
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create temp table bar(f1 int, f2 int);
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create temp table bar2(f3 int) inherits (bar);
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insert into foo values(1,1);
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insert into foo values(3,3);
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insert into foo2 values(2,2,2);
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insert into foo2 values(3,3,3);
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insert into bar values(1,1);
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insert into bar values(2,2);
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insert into bar values(3,3);
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insert into bar values(4,4);
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insert into bar2 values(1,1,1);
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insert into bar2 values(2,2,2);
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insert into bar2 values(3,3,3);
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insert into bar2 values(4,4,4);
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update bar set f2 = f2 + 100 where f1 in (select f1 from foo);
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SELECT relname, bar.* FROM bar, pg_class where bar.tableoid = pg_class.oid
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order by 1,2;
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/* Test multiple inheritance of column defaults */
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CREATE TABLE firstparent (tomorrow date default now()::date + 1);
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CREATE TABLE secondparent (tomorrow date default now() :: date + 1);
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CREATE TABLE jointchild () INHERITS (firstparent, secondparent); -- ok
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CREATE TABLE thirdparent (tomorrow date default now()::date - 1);
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CREATE TABLE otherchild () INHERITS (firstparent, thirdparent); -- not ok
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CREATE TABLE otherchild (tomorrow date default now())
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INHERITS (firstparent, thirdparent); -- ok, child resolves ambiguous default
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DROP TABLE firstparent, secondparent, jointchild, thirdparent, otherchild;
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-- Test changing the type of inherited columns
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insert into d values('test','one','two','three');
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alter table a alter column aa type integer using bit_length(aa);
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select * from d;
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-- Test non-inheritable parent constraints
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create table p1(ff1 int);
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alter table p1 add constraint p1chk check (ff1 > 0) no inherit;
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alter table p1 add constraint p2chk check (ff1 > 10);
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-- connoinherit should be true for NO INHERIT constraint
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select pc.relname, pgc.conname, pgc.contype, pgc.conislocal, pgc.coninhcount, pgc.connoinherit from pg_class as pc inner join pg_constraint as pgc on (pgc.conrelid = pc.oid) where pc.relname = 'p1' order by 1,2;
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-- Test that child does not inherit NO INHERIT constraints
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create table c1 () inherits (p1);
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\d p1
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\d c1
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drop table p1 cascade;
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-- Tests for casting between the rowtypes of parent and child
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-- tables. See the pgsql-hackers thread beginning Dec. 4/04
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create table base (i integer);
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create table derived () inherits (base);
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insert into derived (i) values (0);
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select derived::base from derived;
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drop table derived;
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drop table base;
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create table p1(ff1 int);
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create table p2(f1 text);
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create function p2text(p2) returns text as 'select $1.f1' language sql;
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create table c1(f3 int) inherits(p1,p2);
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insert into c1 values(123456789, 'hi', 42);
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select p2text(c1.*) from c1;
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drop function p2text(p2);
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drop table c1;
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drop table p2;
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drop table p1;
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CREATE TABLE ac (aa TEXT);
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alter table ac add constraint ac_check check (aa is not null);
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CREATE TABLE bc (bb TEXT) INHERITS (ac);
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select pc.relname, pgc.conname, pgc.contype, pgc.conislocal, pgc.coninhcount, pgc.consrc from pg_class as pc inner join pg_constraint as pgc on (pgc.conrelid = pc.oid) where pc.relname in ('ac', 'bc') order by 1,2;
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insert into ac (aa) values (NULL);
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insert into bc (aa) values (NULL);
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alter table bc drop constraint ac_check; -- fail, disallowed
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alter table ac drop constraint ac_check;
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select pc.relname, pgc.conname, pgc.contype, pgc.conislocal, pgc.coninhcount, pgc.consrc from pg_class as pc inner join pg_constraint as pgc on (pgc.conrelid = pc.oid) where pc.relname in ('ac', 'bc') order by 1,2;
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-- try the unnamed-constraint case
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alter table ac add check (aa is not null);
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select pc.relname, pgc.conname, pgc.contype, pgc.conislocal, pgc.coninhcount, pgc.consrc from pg_class as pc inner join pg_constraint as pgc on (pgc.conrelid = pc.oid) where pc.relname in ('ac', 'bc') order by 1,2;
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insert into ac (aa) values (NULL);
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insert into bc (aa) values (NULL);
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alter table bc drop constraint ac_aa_check; -- fail, disallowed
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alter table ac drop constraint ac_aa_check;
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select pc.relname, pgc.conname, pgc.contype, pgc.conislocal, pgc.coninhcount, pgc.consrc from pg_class as pc inner join pg_constraint as pgc on (pgc.conrelid = pc.oid) where pc.relname in ('ac', 'bc') order by 1,2;
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alter table ac add constraint ac_check check (aa is not null);
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alter table bc no inherit ac;
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select pc.relname, pgc.conname, pgc.contype, pgc.conislocal, pgc.coninhcount, pgc.consrc from pg_class as pc inner join pg_constraint as pgc on (pgc.conrelid = pc.oid) where pc.relname in ('ac', 'bc') order by 1,2;
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alter table bc drop constraint ac_check;
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select pc.relname, pgc.conname, pgc.contype, pgc.conislocal, pgc.coninhcount, pgc.consrc from pg_class as pc inner join pg_constraint as pgc on (pgc.conrelid = pc.oid) where pc.relname in ('ac', 'bc') order by 1,2;
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alter table ac drop constraint ac_check;
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select pc.relname, pgc.conname, pgc.contype, pgc.conislocal, pgc.coninhcount, pgc.consrc from pg_class as pc inner join pg_constraint as pgc on (pgc.conrelid = pc.oid) where pc.relname in ('ac', 'bc') order by 1,2;
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drop table bc;
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drop table ac;
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create table ac (a int constraint check_a check (a <> 0));
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create table bc (a int constraint check_a check (a <> 0), b int constraint check_b check (b <> 0)) inherits (ac);
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select pc.relname, pgc.conname, pgc.contype, pgc.conislocal, pgc.coninhcount, pgc.consrc from pg_class as pc inner join pg_constraint as pgc on (pgc.conrelid = pc.oid) where pc.relname in ('ac', 'bc') order by 1,2;
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drop table bc;
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drop table ac;
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create table ac (a int constraint check_a check (a <> 0));
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create table bc (b int constraint check_b check (b <> 0));
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create table cc (c int constraint check_c check (c <> 0)) inherits (ac, bc);
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select pc.relname, pgc.conname, pgc.contype, pgc.conislocal, pgc.coninhcount, pgc.consrc from pg_class as pc inner join pg_constraint as pgc on (pgc.conrelid = pc.oid) where pc.relname in ('ac', 'bc', 'cc') order by 1,2;
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alter table cc no inherit bc;
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select pc.relname, pgc.conname, pgc.contype, pgc.conislocal, pgc.coninhcount, pgc.consrc from pg_class as pc inner join pg_constraint as pgc on (pgc.conrelid = pc.oid) where pc.relname in ('ac', 'bc', 'cc') order by 1,2;
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drop table cc;
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drop table bc;
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drop table ac;
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create table p1(f1 int);
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create table p2(f2 int);
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create table c1(f3 int) inherits(p1,p2);
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insert into c1 values(1,-1,2);
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alter table p2 add constraint cc check (f2>0); -- fail
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alter table p2 add check (f2>0); -- check it without a name, too
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delete from c1;
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insert into c1 values(1,1,2);
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alter table p2 add check (f2>0);
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insert into c1 values(1,-1,2); -- fail
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create table c2(f3 int) inherits(p1,p2);
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\d c2
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create table c3 (f4 int) inherits(c1,c2);
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\d c3
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drop table p1 cascade;
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drop table p2 cascade;
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create table pp1 (f1 int);
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create table cc1 (f2 text, f3 int) inherits (pp1);
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alter table pp1 add column a1 int check (a1 > 0);
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\d cc1
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create table cc2(f4 float) inherits(pp1,cc1);
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\d cc2
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alter table pp1 add column a2 int check (a2 > 0);
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\d cc2
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drop table pp1 cascade;
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-- Test for renaming in simple multiple inheritance
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CREATE TABLE inht1 (a int, b int);
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CREATE TABLE inhs1 (b int, c int);
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CREATE TABLE inhts (d int) INHERITS (inht1, inhs1);
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ALTER TABLE inht1 RENAME a TO aa;
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ALTER TABLE inht1 RENAME b TO bb; -- to be failed
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ALTER TABLE inhts RENAME aa TO aaa; -- to be failed
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ALTER TABLE inhts RENAME d TO dd;
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\d+ inhts
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DROP TABLE inhts;
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-- Test for renaming in diamond inheritance
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CREATE TABLE inht2 (x int) INHERITS (inht1);
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CREATE TABLE inht3 (y int) INHERITS (inht1);
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CREATE TABLE inht4 (z int) INHERITS (inht2, inht3);
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ALTER TABLE inht1 RENAME aa TO aaa;
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\d+ inht4
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CREATE TABLE inhts (d int) INHERITS (inht2, inhs1);
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ALTER TABLE inht1 RENAME aaa TO aaaa;
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ALTER TABLE inht1 RENAME b TO bb; -- to be failed
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\d+ inhts
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WITH RECURSIVE r AS (
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SELECT 'inht1'::regclass AS inhrelid
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UNION ALL
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SELECT c.inhrelid FROM pg_inherits c, r WHERE r.inhrelid = c.inhparent
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)
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SELECT a.attrelid::regclass, a.attname, a.attinhcount, e.expected
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FROM (SELECT inhrelid, count(*) AS expected FROM pg_inherits
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WHERE inhparent IN (SELECT inhrelid FROM r) GROUP BY inhrelid) e
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JOIN pg_attribute a ON e.inhrelid = a.attrelid WHERE NOT attislocal
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ORDER BY a.attrelid::regclass::name, a.attnum;
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DROP TABLE inht1, inhs1 CASCADE;
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-- Test non-inheritable indices [UNIQUE, EXCLUDE] contraints
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CREATE TABLE test_constraints (id int, val1 varchar, val2 int, UNIQUE(val1, val2));
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CREATE TABLE test_constraints_inh () INHERITS (test_constraints);
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\d+ test_constraints
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ALTER TABLE ONLY test_constraints DROP CONSTRAINT test_constraints_val1_val2_key;
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\d+ test_constraints
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\d+ test_constraints_inh
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DROP TABLE test_constraints_inh;
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DROP TABLE test_constraints;
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CREATE TABLE test_ex_constraints (
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c circle,
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EXCLUDE USING gist (c WITH &&)
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);
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CREATE TABLE test_ex_constraints_inh () INHERITS (test_ex_constraints);
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\d+ test_ex_constraints
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ALTER TABLE test_ex_constraints DROP CONSTRAINT test_ex_constraints_c_excl;
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\d+ test_ex_constraints
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\d+ test_ex_constraints_inh
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DROP TABLE test_ex_constraints_inh;
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DROP TABLE test_ex_constraints;
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-- Test non-inheritable foreign key contraints
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CREATE TABLE test_primary_constraints(id int PRIMARY KEY);
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CREATE TABLE test_foreign_constraints(id1 int REFERENCES test_primary_constraints(id));
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CREATE TABLE test_foreign_constraints_inh () INHERITS (test_foreign_constraints);
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\d+ test_primary_constraints
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\d+ test_foreign_constraints
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ALTER TABLE test_foreign_constraints DROP CONSTRAINT test_foreign_constraints_id1_fkey;
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\d+ test_foreign_constraints
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\d+ test_foreign_constraints_inh
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DROP TABLE test_foreign_constraints_inh;
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DROP TABLE test_foreign_constraints;
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DROP TABLE test_primary_constraints;
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--
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-- Test parameterized append plans for inheritance trees
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--
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create temp table patest0 (id, x) as
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select x, x from generate_series(0,1000) x;
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create temp table patest1() inherits (patest0);
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insert into patest1
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select x, x from generate_series(0,1000) x;
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create temp table patest2() inherits (patest0);
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insert into patest2
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select x, x from generate_series(0,1000) x;
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create index patest0i on patest0(id);
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create index patest1i on patest1(id);
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create index patest2i on patest2(id);
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analyze patest0;
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analyze patest1;
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analyze patest2;
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explain (costs off)
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select * from patest0 join (select f1 from int4_tbl limit 1) ss on id = f1;
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select * from patest0 join (select f1 from int4_tbl limit 1) ss on id = f1;
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drop index patest2i;
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explain (costs off)
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select * from patest0 join (select f1 from int4_tbl limit 1) ss on id = f1;
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select * from patest0 join (select f1 from int4_tbl limit 1) ss on id = f1;
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drop table patest0 cascade;
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--
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-- Test merge-append plans for inheritance trees
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--
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create table matest0 (id serial primary key, name text);
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create table matest1 (id integer primary key) inherits (matest0);
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create table matest2 (id integer primary key) inherits (matest0);
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create table matest3 (id integer primary key) inherits (matest0);
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create index matest0i on matest0 ((1-id));
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create index matest1i on matest1 ((1-id));
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-- create index matest2i on matest2 ((1-id)); -- intentionally missing
|
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create index matest3i on matest3 ((1-id));
|
|
|
|
insert into matest1 (name) values ('Test 1');
|
|
insert into matest1 (name) values ('Test 2');
|
|
insert into matest2 (name) values ('Test 3');
|
|
insert into matest2 (name) values ('Test 4');
|
|
insert into matest3 (name) values ('Test 5');
|
|
insert into matest3 (name) values ('Test 6');
|
|
|
|
set enable_indexscan = off; -- force use of seqscan/sort, so no merge
|
|
explain (verbose, costs off) select * from matest0 order by 1-id;
|
|
select * from matest0 order by 1-id;
|
|
explain (verbose, costs off) select min(1-id) from matest0;
|
|
select min(1-id) from matest0;
|
|
reset enable_indexscan;
|
|
|
|
set enable_seqscan = off; -- plan with fewest seqscans should be merge
|
|
explain (verbose, costs off) select * from matest0 order by 1-id;
|
|
select * from matest0 order by 1-id;
|
|
explain (verbose, costs off) select min(1-id) from matest0;
|
|
select min(1-id) from matest0;
|
|
reset enable_seqscan;
|
|
|
|
drop table matest0 cascade;
|
|
|
|
--
|
|
-- Test merge-append for UNION ALL append relations
|
|
--
|
|
|
|
set enable_seqscan = off;
|
|
set enable_indexscan = on;
|
|
set enable_bitmapscan = off;
|
|
|
|
-- Check handling of duplicated, constant, or volatile targetlist items
|
|
explain (costs off)
|
|
SELECT thousand, tenthous FROM tenk1
|
|
UNION ALL
|
|
SELECT thousand, thousand FROM tenk1
|
|
ORDER BY thousand, tenthous;
|
|
|
|
explain (costs off)
|
|
SELECT thousand, tenthous, thousand+tenthous AS x FROM tenk1
|
|
UNION ALL
|
|
SELECT 42, 42, hundred FROM tenk1
|
|
ORDER BY thousand, tenthous;
|
|
|
|
explain (costs off)
|
|
SELECT thousand, tenthous FROM tenk1
|
|
UNION ALL
|
|
SELECT thousand, random()::integer FROM tenk1
|
|
ORDER BY thousand, tenthous;
|
|
|
|
-- Check min/max aggregate optimization
|
|
explain (costs off)
|
|
SELECT min(x) FROM
|
|
(SELECT unique1 AS x FROM tenk1 a
|
|
UNION ALL
|
|
SELECT unique2 AS x FROM tenk1 b) s;
|
|
|
|
explain (costs off)
|
|
SELECT min(y) FROM
|
|
(SELECT unique1 AS x, unique1 AS y FROM tenk1 a
|
|
UNION ALL
|
|
SELECT unique2 AS x, unique2 AS y FROM tenk1 b) s;
|
|
|
|
-- XXX planner doesn't recognize that index on unique2 is sufficiently sorted
|
|
explain (costs off)
|
|
SELECT x, y FROM
|
|
(SELECT thousand AS x, tenthous AS y FROM tenk1 a
|
|
UNION ALL
|
|
SELECT unique2 AS x, unique2 AS y FROM tenk1 b) s
|
|
ORDER BY x, y;
|
|
|
|
reset enable_seqscan;
|
|
reset enable_indexscan;
|
|
reset enable_bitmapscan;
|