From #680. MySQL seems to not use an OUT variable's declared type when serializing it on the wire, so there may be a type mismatch when assigning the variable. Add a test for every possible `OUT` parameter type.
From #680.
MySQL seems to not use an OUT variable's declared type when serializing it on the wire, so there may be a type mismatch when assigning the variable.
Add a test for every possible
OUTparameter type.