Changed FILTER expressions to consider ENUM/SET types #512
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Previously a statement such as
UPDATE test SET col = 2 WHERE col = 1;would fail forENUMandSETtypes. For theFILTERnode, we only consider the values for comparison, but the aforementioned types can match'horse'with the number 50, so we have to consider the column type.Now this PR only affects
ENUMandSET, although it's probably correct that all types should be used, with direct literal comparisons being used only when no other type can be derived from a column or variable. However, either MySQL has context-aware comparisons (my guess), or our comparison logic is wrong for other types, so I'm leaving those alone for now.