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Code Activity

Reduce lock levels of some ALTER TABLE cmds

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VALIDATE CONSTRAINT

CLUSTER ON
SET WITHOUT CLUSTER

ALTER COLUMN SET STATISTICS
ALTER COLUMN SET ()
ALTER COLUMN RESET ()

All other sub-commands use AccessExclusiveLock

Simon Riggs and Noah Misch

Reviews by Robert Haas and Andres Freund
This commit is contained in:
Simon Riggs
2014-04-06 11:13:43 -04:00
parent 80a5cf643a
commit e5550d5fec
13 changed files with 402 additions and 120 deletions
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29
src/test/regress/sql/alter_table.sql
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@ -1283,6 +1283,9 @@ and c.relname != 'my_locks'
group by c.relname;
create table alterlock (f1 int primary key, f2 text);
insert into alterlock values (1, 'foo');
create table alterlock2 (f3 int primary key, f1 int);
insert into alterlock2 values (1, 1);
begin; alter table alterlock alter column f2 set statistics 150;
select * from my_locks order by 1;
@ -1324,7 +1327,33 @@ begin; alter table alterlock alter column f2 set default 'x';
select * from my_locks order by 1;
rollback;
begin;
create trigger ttdummy
before delete or update on alterlock
for each row
execute procedure
ttdummy (1, 1);
select * from my_locks order by 1;
rollback;
begin;
select * from my_locks order by 1;
alter table alterlock2 add foreign key (f1) references alterlock (f1);
select * from my_locks order by 1;
rollback;
begin;
alter table alterlock2
add constraint alterlock2nv foreign key (f1) references alterlock (f1) NOT VALID;
select * from my_locks order by 1;
commit;
begin;
alter table alterlock2 validate constraint alterlock2nv;
select * from my_locks order by 1;
rollback;
-- cleanup
drop table alterlock2;
drop table alterlock;
drop view my_locks;
drop type lockmodes;