The NOT NULL strength reduction optimization from [de9c86c9e4cdb34f] should be applied to the WHERE clause only. Otherwise, the operand of the IS NULL or IS NOT NULL operator might be a reference to a bare column of an aggregate table, and we can't tell if it is NULL or not based only on its NOT NULL attribute. [forum:/forumpost/440f2a2f17|Forum post 440f2a2f17]. (tags: trunk)

The NOT NULL strength reduction optimization from [de9c86c9e4cdb34f] should be applied to the WHERE clause only. Otherwise, the operand of the IS NULL or IS NOT NULL operator might be a reference to a bare column of an aggregate table, and we can't tell if it is NULL or not based only on its NOT NULL attribute. [forum:/forumpost/440f2a2f17|Forum post 440f2a2f17]. (tags: trunk)