Replace is_expression_t<> with detail::is_expression_impl<>::type
Replace is_expression_t<> with detail::is_expression_impl<>::type

sergeken/sqlpp11,sergeken/sqlpp11,rbock/sqlpp11,happybits/sqlpp11,happybits/sqlpp11,happybits/sqlpp11,rettichschnidi/sqlpp11,rbock/sqlpp11,rettichschnidi/sqlpp11,volka/sqlpp11,sergeken/sqlpp11,rettichschnidi/sqlpp11,sergeken/sqlpp11,volka/sqlpp11,rbock/sqlpp11,rettichschnidi/sqlpp11,volka/sqlpp11,volka/sqlpp11,happybits/sqlpp11,rbock/sqlpp11