Method as_custom_sql

tests/custom_lookups/tests.py:586–599

(self, compiler, connection)

                # "as_postgresql" for postgres and so on, but as we don't know
                # which DB we are running on, we need to use setattr.
                def as_custom_sql(self, compiler, connection):
                    lhs_sql, lhs_params = self.process_lhs(
                        compiler, connection, self.lhs.lhs
                    )
                    rhs_sql, rhs_params = self.process_rhs(compiler, connection)
                    params = lhs_params + rhs_params + lhs_params + rhs_params
                    return (
                        "%(lhs)s >= "
                        "str_to_date(CONCAT(%(rhs)s, '-01-01'), '%%%%Y-%%%%m-%%%%d') "
                        "AND %(lhs)s <= "
                        "str_to_date(CONCAT(%(rhs)s, '-12-31'), '%%%%Y-%%%%m-%%%%d')"
                        % {"lhs": lhs_sql, "rhs": rhs_sql},
                        params,
                    )

            setattr(
                CustomYearExact,