The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/9.4/static/functions-subquery.html
Description:
psql (PostgreSQL) 9.4.6 on SLES12 SP1
2 tables a and b
Table "public.a"
Column | Type | Modifiers
-----------------+--------------------------+---------------
foo | integer | not null
bar | integer | not null
Table "public.b"
Column | Type | Modifiers
-----------------+--------------------------+---------------
bar | integer | not null
No error when executing this statement even though table b does not contain
column foo
SELECT foo,bar FROM a WHERE foo=1 AND bar NOT IN (SELECT bar FROM b WHERE
bar > 2 AND foo=2)
Get an error on this one ERROR: column b.foo does not exist
SELECT foo,bar FROM a WHERE foo=1 AND bar NOT IN (SELECT bar FROM b WHERE
b.bar > 2 AND b.foo=2)
It works if I remove foo from the subquery.
SELECT foo,bar FROM a WHERE foo=1 AND bar NOT IN (SELECT bar FROM b WHERE
b.bar > 2)
Do I need to qualify all columns in the subquery or is this a bug is psql
9.4.6?
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