[
  {
    "name": "TestSetOperation",
    "cases": [
      "select * from t3 union select * from t1",
      "select * from t2 union all select * from t1",
      "select * from t1 except select * from t3",
      "select * from t1 intersect select * from t2",
      "select * from t1 union all select * from t2 union all select * from t3",
      "select * from t1 union all select * from t2 except select * from t3",
      "select * from t1 intersect select * from t2 intersect select * from t1",
      "select * from t1 union all select * from t2 intersect select * from t3",
      "select * from t1 except select * from t2 intersect select * from t3",
      "select * from t1 intersect (select * from t2 except (select * from t3))",
      "select * from t1 union all (select * from t2 except select * from t3)",
      "select * from t1 union (select * from t2 union all select * from t3)",
      "(select * from t1 intersect select * from t1) except (select * from t2 union select * from t3)"
    ]
  },
  {
    "name": "TestSetOperationOnDiffColType",
    "cases": [
      "select * from t3 union select * from t1",
      "select * from t2 union all select * from t1",
      "select * from t1 except select * from t3",
      "select * from t1 intersect select * from t2",
      "select * from t1 union all select * from t2 union all select * from t3",
      "select * from t1 union all select * from t2 except select * from t3",
      "select * from t1 intersect select * from t2 intersect select * from t1",
      "select * from t1 union all select * from t2 intersect select * from t3",
      "select * from t1 except select * from t2 intersect select * from t3"
    ]
  },
  {
    "name": "TestNaturalJoin",
    "cases": [
      "select * from t1 natural join t2",
      "select * from t1 natural left join t2 order by a",
      "select * from t1 natural right join t2 order by a",
      "SELECT * FROM t1 NATURAL LEFT JOIN t2 WHERE not(t1.a <=> t2.a)"
    ]
  }
]