Details
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Bug
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Status: Resolved
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Minor
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Resolution: Fixed
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None
Description
The optimizer pushes down filters for left anti joins. This unfortunately has the opposite effect. For example:
sql("create or replace temporary view tbl_a as values (1, 5), (2, 1), (3, 6) as t(c1, c2)")
sql("create or replace temporary view tbl_b as values 1 as t(c1)")
sql("""
select *
from tbl_a
left anti join tbl_b on ((tbl_a.c1 = tbl_a.c2) is null or tbl_a.c1 = tbl_a.c2)
""")
Should return rows [1, 5], [2, 1] & [3, 6], but returns no rows.
The upside is that this will only happen when you use a really weird anti-join (only referencing the table on the left hand side).
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