// Returns a representation of "a!=b"
func Neq(lhs, rhs Expression) BoolExpression {
lit, ok := rhs.(*literalExpression)
if ok && sqltypes.Value(lit.value).IsNull() {
return newBoolExpression(lhs, rhs, []byte(" IS NOT "))
}
return newBoolExpression(lhs, rhs, []byte("!="))
}
func (c literalExpression) SerializeSql(out *bytes.Buffer) error {
sqltypes.Value(c.value).EncodeSql(out)
return nil
}