feat: initial Dremio sqlglot dialect (#33847)

tests/unit_tests/sql/dialects/dremio_tests.py

@@ -0,0 +1,32 @@
+# 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.
+
+from sqlglot import parse_one
+
+from superset.sql.dialects.dremio import Dremio
+
+
+def test_regexp_split() -> None:
+    """
+    Test that regexp_split works correctly in Dremio dialect.
+    """
+    sql = "SELECT REGEXP_SPLIT(tags, ',', 'ALL', 1000) as t"
+
+    ast = parse_one(sql, dialect=Dremio)
+    regenerated = ast.sql(dialect=Dremio)
+
+    assert regenerated == "SELECT REGEXP_SPLIT(tags, ',', 'ALL', 1000) AS t"