add user case

regression-test/data/correctness_p0/test_current_timestamp.out

@@ -51,3 +51,6 @@
 -- !select_sql --
 2
 
+-- !select --
+2
+

regression-test/data/correctness_p0/test_current_timestamp_dft.csv

@@ -0,0 +1,2 @@
+1,2010-11-30 23:59:59.281000
+2,2011-11-30 23:59:59.281000

regression-test/suites/correctness_p0/test_current_timestamp.groovy

@@ -215,4 +215,35 @@ suite("test_current_timestamp") {
         """
         exception "errCode = 2, detailMessage = Internal Error, maybe syntax error or this is a bug: column's default value current_timestamp precision must be between 0 and 6"
     }
+
+    // user case
+    def tableName6 = "test_current_timestamp_4"
+    sql """ DROP TABLE IF EXISTS ${tableName6} """
+    sql """
+        CREATE TABLE IF NOT EXISTS ${tableName6}
+        (
+            `id` int,
+            `date_time` datetime(3),
+            `data_entry_time` datetime(3) NULL DEFAULT CURRENT_TIMESTAMP(3)
+        ) DUPLICATE KEY(`id`)
+        DISTRIBUTED BY HASH(id)
+        PROPERTIES
+        (
+            "replication_num" = "1"
+        );
+    """
+
+    streamLoad {
+        table "${tableName6}"
+        set 'columns', 'id,date_time'
+        set 'format', 'csv'
+        set 'column_separator', ','
+
+        file "test_current_timestamp_dft.csv"
+
+        time 10000
+    }
+
+    sql "sync"
+    qt_select """ select count(*) from ${tableName6} """
  }