minor: port intersection sql tests to sqllogictests (apache#5331)

datafusion/core/tests/sql/mod.rs

@@ -87,7 +87,6 @@ pub mod explain_analyze;
 pub mod expr;
 pub mod functions;
 pub mod group_by;
-pub mod intersection;
 pub mod joins;
 pub mod json;
 pub mod limit;

datafusion/core/tests/sqllogictests/test_files/intersection.slt

@@ -0,0 +1,45 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+
+#   http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+statement ok
+CREATE EXTERNAL TABLE alltypes_plain STORED AS PARQUET LOCATION '../../parquet-testing/data/alltypes_plain.parquet';
+
+query ?I
+SELECT * FROM (SELECT null AS id1, 1 AS id2) t1
+            INTERSECT SELECT * FROM (SELECT null AS id1, 2 AS id2) t2
+----
+
+
+query ?I
+SELECT * FROM (SELECT null AS id1, 1 AS id2) t1
+            INTERSECT SELECT * FROM (SELECT null AS id1, 1 AS id2) t2
+----
+NULL 1
+
+
+query IR
+SELECT int_col, double_col FROM alltypes_plain where int_col > 0 INTERSECT ALL SELECT int_col, double_col FROM alltypes_plain LIMIT 4
+----
+1 10.1
+1 10.1
+1 10.1
+1 10.1
+
+query IR
+SELECT int_col, double_col FROM alltypes_plain where int_col > 0 INTERSECT SELECT int_col, double_col FROM alltypes_plain
+----
+1 10.1