[SPARK-47482] Add HiveDialect to sql module

Author: xleoken

sql/core/src/main/scala/org/apache/spark/sql/jdbc/HiveDialect.scala

@@ -0,0 +1,29 @@
+/*
+ * 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.
+ */
+
+package org.apache.spark.sql.jdbc
+
+import java.util.Locale
+
+private case class HiveDialect() extends JdbcDialect {
+  override def canHandle(url: String): Boolean =
+    url.toLowerCase(Locale.ROOT).startsWith("jdbc:hive2")
+
+  override def quoteIdentifier(colName: String): String = {
+    s"`$colName`"
+  }
+}

sql/core/src/test/scala/org/apache/spark/sql/jdbc/JDBCSuite.scala

@@ -787,6 +787,7 @@ class JDBCSuite extends QueryTest with SharedSparkSession {
 
   test("Default jdbc dialect registration") {
     assert(JdbcDialects.get("jdbc:mysql://127.0.0.1/db") === MySQLDialect())
+    assert(JdbcDialects.get("jdbc:hive2://127.0.0.1/db") === HiveDialect())
     assert(JdbcDialects.get("jdbc:postgresql://127.0.0.1/db") === PostgresDialect())
     assert(JdbcDialects.get("jdbc:db2://127.0.0.1/db") === DB2Dialect())
     assert(JdbcDialects.get("jdbc:sqlserver://127.0.0.1/db") === MsSqlServerDialect())