[SPARK-11788][SQL] surround timestamp/date value with quotes in JDBC data source

When query the Timestamp or Date column like the following
val filtered = jdbcdf.where($"TIMESTAMP_COLUMN" >= beg && $"TIMESTAMP_COLUMN" < end)
The generated SQL query is "TIMESTAMP_COLUMN >= 2015-01-01 00:00:00.0"
It should have quote around the Timestamp/Date value such as "TIMESTAMP_COLUMN >= '2015-01-01 00:00:00.0'"

Author: Huaxin Gao <huaxing@oc0558782468.ibm.com>

Closes #9872 from huaxingao/spark-11788.

sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JDBCRDD.scala

@@ -17,7 +17,7 @@
 
 package org.apache.spark.sql.execution.datasources.jdbc
 
-import java.sql.{Connection, DriverManager, ResultSet, ResultSetMetaData, SQLException}
+import java.sql.{Connection, Date, DriverManager, ResultSet, ResultSetMetaData, SQLException, Timestamp}
 import java.util.Properties
 
 import scala.util.control.NonFatal
@@ -267,6 +267,8 @@ private[sql] class JDBCRDD(
    */
   private def compileValue(value: Any): Any = value match {
     case stringValue: String => s"'${escapeSql(stringValue)}'"
+    case timestampValue: Timestamp => "'" + timestampValue + "'"
+    case dateValue: Date => "'" + dateValue + "'"
     case _ => value
   }
 

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

@@ -484,4 +484,15 @@ class JDBCSuite extends SparkFunSuite with BeforeAndAfter with SharedSQLContext
     assert(h2.getTableExistsQuery(table) == defaultQuery)
     assert(derby.getTableExistsQuery(table) == defaultQuery)
   }
+
+  test("Test DataFrame.where for Date and Timestamp") {
+    // Regression test for bug SPARK-11788
+    val timestamp = java.sql.Timestamp.valueOf("2001-02-20 11:22:33.543543");
+    val date = java.sql.Date.valueOf("1995-01-01")
+    val jdbcDf = sqlContext.read.jdbc(urlWithUserAndPass, "TEST.TIMETYPES", new Properties)
+    val rows = jdbcDf.where($"B" > date && $"C" > timestamp).collect()
+    assert(rows(0).getAs[java.sql.Date](1) === java.sql.Date.valueOf("1996-01-01"))
+    assert(rows(0).getAs[java.sql.Timestamp](2)
+      === java.sql.Timestamp.valueOf("2002-02-20 11:22:33.543543"))
+  }
 }