trait ColumnTypeEquivalence[A, B] extends AnyRef
Typeclass representing the equivalence of two column types.
For example: 1 === 2
is a valid sqlest expression but 1 === "2"
is not.
The main requirement for this class comes from OptionColumnTypes
. sqlest is relaxed
about allowing direct comparisons between optional and non-optional columns.
For example, 1 === Some(2)
is considered valid.
The second requirement is that different numeric column types should be comparable
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