From 6d7b0730362dc8a53a8554a127cb82ab2fc75c5d Mon Sep 17 00:00:00 2001
From: feng lv <fenglv15@mails.ucas.ac.cn>
Date: Sun, 31 Oct 2021 12:18:22 +0000
Subject: [PATCH] add test

---
 .../02111_modify_table_comment.reference      |  4 +++
 .../02111_modify_table_comment.sql            | 32 +++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 tests/queries/0_stateless/02111_modify_table_comment.reference
 create mode 100644 tests/queries/0_stateless/02111_modify_table_comment.sql

diff --git a/tests/queries/0_stateless/02111_modify_table_comment.reference b/tests/queries/0_stateless/02111_modify_table_comment.reference
new file mode 100644
index 00000000000..bc58e6576e3
--- /dev/null
+++ b/tests/queries/0_stateless/02111_modify_table_comment.reference
@@ -0,0 +1,4 @@
+CREATE TABLE `02111_modify_table_comment`.t\n(\n    `n` Int8\n)\nENGINE = MergeTree\nORDER BY n\nSETTINGS index_granularity = 8192\nCOMMENT \'this is a MergeTree table\'
+CREATE TABLE `02111_modify_table_comment`.t\n(\n    `n` Int8\n)\nENGINE = MergeTree\nORDER BY n\nSETTINGS index_granularity = 8192\nCOMMENT \'MergeTree Table\'
+CREATE TABLE `02111_modify_table_comment`.t_merge\n(\n    `n` Int8\n)\nENGINE = Merge(\'02111_modify_table_comment\', \'t\')\nCOMMENT \'this is a Merge table\'
+CREATE TABLE `02111_modify_table_comment`.t_merge\n(\n    `n` Int8\n)\nENGINE = Merge(\'02111_modify_table_comment\', \'t\')\nCOMMENT \'Merge Table\'
diff --git a/tests/queries/0_stateless/02111_modify_table_comment.sql b/tests/queries/0_stateless/02111_modify_table_comment.sql
new file mode 100644
index 00000000000..378b04517e8
--- /dev/null
+++ b/tests/queries/0_stateless/02111_modify_table_comment.sql
@@ -0,0 +1,32 @@
+DROP DATABASE IF EXISTS 02111_modify_table_comment;
+CREATE DATABASE 02111_modify_table_comment;
+
+USE 02111_modify_table_comment;
+
+CREATE TABLE t
+(
+    `n` Int8
+)
+ENGINE = MergeTree
+ORDER BY n
+COMMENT 'this is a MergeTree table';
+
+SHOW CREATE t;
+
+ALTER TABLE t
+    MODIFY COMMENT 'MergeTree Table';
+
+SHOW CREATE t;
+
+CREATE TABLE t_merge AS t
+ENGINE = Merge('02111_modify_table_comment', 't')
+COMMENT 'this is a Merge table';
+
+SHOW CREATE t_merge;
+
+ALTER TABLE t_merge
+    MODIFY COMMENT 'Merge Table';
+
+SHOW CREATE t_merge;
+
+DROP DATABASE 02111_modify_table_comment;