Method test_compound_selects

test/sql/test_compiler.py:2537–2675

(self)

            )

    def test_compound_selects(self):
        assert_raises_message(
            exc.CompileError,
            "All selectables passed to CompoundSelect "
            "must have identical numbers of columns; "
            "select #1 has 2 columns, select #2 has 3",
            union(table3.select(), table1.select()).compile,
        )

        x = union(
            select(table1).where(table1.c.myid == 5),
            select(table1).where(table1.c.myid == 12),
        ).order_by(table1.c.myid)

        self.assert_compile(
            x,
            "SELECT mytable.myid, mytable.name, "
            "mytable.description "
            "FROM mytable WHERE "
            "mytable.myid = :myid_1 UNION "
            "SELECT mytable.myid, mytable.name, mytable.description "
            "FROM mytable WHERE mytable.myid = :myid_2 "
            "ORDER BY myid",
        )

        x = union(select(table1), select(table1))
        x = union(x, select(table1))
        self.assert_compile(
            x,
            "(SELECT mytable.myid, mytable.name, mytable.description "
            "FROM mytable UNION SELECT mytable.myid, mytable.name, "
            "mytable.description FROM mytable) UNION SELECT mytable.myid,"
            " mytable.name, mytable.description FROM mytable",
        )

        u1 = union(
            select(table1.c.myid, table1.c.name),
            select(table2),
            select(table3),
        ).order_by("name")
        self.assert_compile(
            u1,
            "SELECT mytable.myid, mytable.name "
            "FROM mytable UNION SELECT myothertable.otherid, "
            "myothertable.othername FROM myothertable "
            "UNION SELECT thirdtable.userid, thirdtable.otherstuff "
            "FROM thirdtable ORDER BY name",
        )

        u1s = u1.subquery()
        assert u1s.corresponding_column(table2.c.otherid) is u1s.c.myid

        self.assert_compile(
            union(select(table1.c.myid, table1.c.name), select(table2))
            .order_by("myid")
            .offset(10)
            .limit(5),
            # note table name is omitted here.  The CompoundSelect, inside of