Re: [HACKERS] Isolation of table creation
On 2015-12-11 11:46:11 +0300, Alexander Korotkov wrote: > I discovered interesting issue with PostgreSQL transaction isolation. > When transaction is in repeatable read isolation level, I can't see table > which was created after transaction obtained snapshot. But I can run DML > statements with this table. See example below. > Is it a bug? No, that's pretty much expected. Parse analysis, planning use fresh catalog snapshot, whereas psql's schema queries use the transaction snapshot. Andres -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
[HACKERS] Isolation of table creation
Hackers, I discovered interesting issue with PostgreSQL transaction isolation. When transaction is in repeatable read isolation level, I can't see table which was created after transaction obtained snapshot. But I can run DML statements with this table. See example below. Session 1 # begin transaction isolation level repeatable read; BEGIN # \dt No relations found. Session 2 # create table tmp (i int not null); CREATE TABLE # insert into tmp values (1); INSERT 0 1 # \dt No relations found. # select * from tmp; i --- (0 rows) # insert into tmp values (2); INSERT 0 1 # select * from tmp; i --- 2 (1 row) # commit; COMMIT Is it a bug? -- Alexander Korotkov Postgres Professional: http://www.postgrespro.com The Russian Postgres Company
