[test](statistics)Add stats test for replace table.

regression-test/suites/statistics/test_replace_table.grovvy

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+// 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.
+
+suite("test_replace_table") {
+
+    sql """drop database if exists test_replace_table"""
+    sql """create database test_replace_table"""
+    sql """use test_replace_table"""
+    sql """set global force_sample_analyze=false"""
+    sql """set global enable_auto_analyze=false"""
+
+    sql """CREATE TABLE t1 (
+            t1key int NOT NULL,
+            t1value varchar(25) NOT NULL
+        )ENGINE=OLAP
+        DUPLICATE KEY(`t1key`)
+        COMMENT "OLAP"
+        DISTRIBUTED BY HASH(`t1key`) BUCKETS 1
+        PROPERTIES (
+            "replication_num" = "1"
+        )
+    """
+
+    sql """CREATE TABLE t2 (
+            t2key int NOT NULL
+        )ENGINE=OLAP
+        DUPLICATE KEY(`t2key`)
+        COMMENT "OLAP"
+        DISTRIBUTED BY HASH(`t2key`) BUCKETS 1
+        PROPERTIES (
+            "replication_num" = "1"
+        )
+    """
+
+    sql """insert into t1 values (1, "1"), (2, "2")"""
+    sql """insert into t2 values (3)"""
+    sql """analyze table t1 with sync"""
+    sql """analyze table t2 with sync"""
+
+    def result = sql """show column stats t1"""
+    assertEquals(2, result.size())
+    result = sql """show column cached stats t1"""
+    assertEquals(2, result.size())
+    result = sql """show column stats t2"""
+    assertEquals(1, result.size())
+    result = sql """show column cached stats t2"""
+    assertEquals(1, result.size())
+
+    sql """ALTER TABLE t1 REPLACE WITH TABLE t2;"""
+    result = sql """show column stats t1"""
+    assertEquals(1, result.size())
+    result = sql """show column cached stats t1"""
+    assertEquals(1, result.size())
+    result = sql """show column stats t2"""
+    assertEquals(2, result.size())
+    result = sql """show column cached stats t2"""
+    assertEquals(2, result.size())
+
+    sql """ALTER TABLE t1 REPLACE WITH TABLE t2 PROPERTIES('swap' = 'false');"""
+    result = sql """show column stats t1"""
+    assertEquals(2, result.size())
+    result = sql """show column cached stats t1"""
+    assertEquals(2, result.size())
+
+    sql """drop database if exists test_replace_table"""
+}
+