The following bug has been logged online: Bug reference: 4422 Logged by: vasile Email address: [EMAIL PROTECTED] PostgreSQL version: 8.2.4 Operating system: Centos 4 Description: select ... where ... NOT EXISTS / NOT IN Details:
I have this 2 similar queries. Why the 1st query is returning 1000+ rows and the 2nd one no rows ? The col1 is not empty in both tables. 1) SELECT col1, col2, col3 FROM table1 t1 WHERE NOT EXISTS (SELECT t2.col1 FROM table2 t2 WHERE t1.col1 = t2.col1 ); 2) SELECT col1, col2, col3 FROM table1 t1 WHERE t1.col1 NOT IN (SELECT t2.col1 FROM table2 t2 ); If I build the query with "LEFT JOIN" I have the same result set like in the 1st query: SELECT t1.col1, t1.col2, t1.col3 FROM table1 t1 LEFT JOIN table2 t2 ON (t1.col1 = t2.col1) WHERE t2.col1 is null; -- Sent via pgsql-bugs mailing list (pgsql-bugs@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-bugs
