Hi,
While hacking away at implementing join removal support for ANTI-JOINs I
realised that I couldn't just replace the join with a WHERE false
condition... Let me explain...
With a query such as:
SELECT * FROM a WHERE NOT EXISTS(SELECT 1 FROM b WHERE a.b_id = b.id);
Where a.b_id has a foreign
David Rowley dgrowle...@gmail.com writes:
I quickly put together the attached patch which adds a knownnotnull bool
field to Var which we can set to true when we're completely sure that the
Var cannot contain any NULL values.
This is utterly the wrong way to go about it. How will you update
