diff --git a/tests/develop-test/5-taos-tools/taosbenchmark/auto_create_table_json.py b/tests/develop-test/5-taos-tools/taosbenchmark/auto_create_table_json.py
index 404f922dc7a6fa07acf3fb74c93e66f9d052c6fe..a0567f3510a95708fb7469ec4549b81bda3aade2 100644
--- a/tests/develop-test/5-taos-tools/taosbenchmark/auto_create_table_json.py
+++ b/tests/develop-test/5-taos-tools/taosbenchmark/auto_create_table_json.py
@@ -37,12 +37,44 @@ class TDTestCase:
         tdSql.checkData(0, 0, 8)
         tdSql.query("select count(*) from db.stb1")
         tdSql.checkData(0, 0, 160)
+        tdSql.query("select distinct(c5) from db.stb1")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c6) from db.stb1")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c7) from db.stb1")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c8) from db.stb1")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c9) from db.stb1")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c10) from db.stb1")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c11) from db.stb1")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c12) from db.stb1")
+        tdSql.checkData(0, 0, None)
 
         tdSql.execute("reset query cache")
         tdSql.query("select count(tbname) from db.`stb1-2`")
         tdSql.checkData(0, 0, 8)
         tdSql.query("select count(*) from db.`stb1-2`")
         tdSql.checkData(0, 0, 160)
+        tdSql.query("select distinct(c5) from db.`stb1-2`")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c6) from db.`stb1-2`")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c7) from db.`stb1-2`")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c8) from db.`stb1-2`")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c9) from db.`stb1-2`")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c10) from db.`stb1-2`")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c11) from db.`stb1-2`")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c12) from db.`stb1-2`")
+        tdSql.checkData(0, 0, None)
 
         cmd = "taosBenchmark -f ./5-taos-tools/taosbenchmark/json/stmt_auto_create_table.json"
         tdLog.info("%s" % cmd)
diff --git a/tests/develop-test/5-taos-tools/taosbenchmark/json/taosc_auto_create_table.json b/tests/develop-test/5-taos-tools/taosbenchmark/json/taosc_auto_create_table.json
index e608fe1069bcff5beb9ff65d916cc87d0967d792..0895f1b45cad6b6978e7820db0bf8936f772ffcc 100644
--- a/tests/develop-test/5-taos-tools/taosbenchmark/json/taosc_auto_create_table.json
+++ b/tests/develop-test/5-taos-tools/taosbenchmark/json/taosc_auto_create_table.json
@@ -55,6 +55,7 @@
       "sample_file": "./sample.csv",
       "use_sample_ts": "no",
       "tags_file": "",
+      "partial_col_num": 5,
       "columns": [{"type": "INT"}, {"type": "BIGINT"}, {"type": "FLOAT"}, {"type": "DOUBLE"}, {"type": "SMALLINT"}, {"type": "TINYINT"}, {"type": "BOOL"}, {"type": "NCHAR","len": 29, "count":1}, {"type": "UINT"}, {"type": "UBIGINT"}, {"type": "UTINYINT"}, {"type": "USMALLINT"}, {"type": "BINARY", "len": 23, "count":1}],
       "tags": [{"type": "TIMESTAMP"},{"type": "INT"}, {"type": "BIGINT"}, {"type": "FLOAT"}, {"type": "DOUBLE"}, {"type": "SMALLINT"}, {"type": "TINYINT"}, {"type": "BOOL"}, {"type": "NCHAR","len": 17, "count":1}, {"type": "UINT"}, {"type": "UBIGINT"}, {"type": "UTINYINT"}, {"type": "USMALLINT"}, {"type": "BINARY", "len": 19, "count":1}]
     },{
@@ -80,6 +81,7 @@
       "sample_file": "./sample.csv",
       "use_sample_ts": "no",
       "tags_file": "",
+      "partial_col_num": 5,
       "columns": [{"type": "INT"}, {"type": "BIGINT"}, {"type": "FLOAT"}, {"type": "DOUBLE"}, {"type": "SMALLINT"}, {"type": "TINYINT"}, {"type": "BOOL"}, {"type": "NCHAR","len": 29, "count":1}, {"type": "UINT"}, {"type": "UBIGINT"}, {"type": "UTINYINT"}, {"type": "USMALLINT"}, {"type": "BINARY", "len": 23, "count":1}],
       "tags": [{"type": "TIMESTAMP"},{"type": "INT"}, {"type": "BIGINT"}, {"type": "FLOAT"}, {"type": "DOUBLE"}, {"type": "SMALLINT"}, {"type": "TINYINT"}, {"type": "BOOL"}, {"type": "NCHAR","len": 17, "count":1}, {"type": "UINT"}, {"type": "UBIGINT"}, {"type": "UTINYINT"}, {"type": "USMALLINT"}, {"type": "BINARY", "len": 19, "count":1}]
     }]
diff --git a/tests/develop-test/5-taos-tools/taosbenchmark/json/taosc_insert_alltypes.json b/tests/develop-test/5-taos-tools/taosbenchmark/json/taosc_insert_alltypes.json
index 698fb599f595fbbc4a1fd130696e41059362ca50..6816ef5c3dd7dd9c59835a72bd10637814b4537d 100644
--- a/tests/develop-test/5-taos-tools/taosbenchmark/json/taosc_insert_alltypes.json
+++ b/tests/develop-test/5-taos-tools/taosbenchmark/json/taosc_insert_alltypes.json
@@ -55,6 +55,7 @@
       "sample_file": "./sample.csv",
       "use_sample_ts": "no",
       "tags_file": "",
+      "partial_col_num": 999,
       "columns": [{"type": "TIMESTAMP"},{"type": "INT"}, {"type": "BIGINT"}, {"type": "FLOAT"}, {"type": "DOUBLE"}, {"type": "SMALLINT"}, {"type": "TINYINT"}, {"type": "BOOL"}, {"type": "NCHAR","len": 29, "count":1}, {"type": "UINT"}, {"type": "UBIGINT"}, {"type": "UTINYINT"}, {"type": "USMALLINT"}, {"type": "BINARY", "len": 23, "count":1}],
       "tags": [{"type": "TIMESTAMP"},{"type": "INT"}, {"type": "BIGINT"}, {"type": "FLOAT"}, {"type": "DOUBLE"}, {"type": "SMALLINT"}, {"type": "TINYINT"}, {"type": "BOOL"}, {"type": "NCHAR","len": 17, "count":1}, {"type": "UINT"}, {"type": "UBIGINT"}, {"type": "UTINYINT"}, {"type": "USMALLINT"}, {"type": "BINARY", "len": 19, "count":1}]
     }]
diff --git a/tests/develop-test/5-taos-tools/taosbenchmark/json/taosc_limit_offset.json b/tests/develop-test/5-taos-tools/taosbenchmark/json/taosc_limit_offset.json
index c78317aade33cd3fea4a400511dee5b1431bc473..346e3cd8680cf3836523daf693f46bb2a0e1cffd 100644
--- a/tests/develop-test/5-taos-tools/taosbenchmark/json/taosc_limit_offset.json
+++ b/tests/develop-test/5-taos-tools/taosbenchmark/json/taosc_limit_offset.json
@@ -55,7 +55,8 @@
       "sample_file": "./sample.csv",
       "use_sample_ts": "no",
       "tags_file": "",
-      "columns": [{"type": "TIMESTAMP"},{"type": "INT"}, {"type": "BIGINT"}, {"type": "FLOAT"}, {"type": "DOUBLE"}, {"type": "SMALLINT"}, {"type": "TINYINT"}, {"type": "BOOL"}, {"type": "NCHAR","len": 29, "count":1}, {"type": "UINT"}, {"type": "UBIGINT"}, {"type": "UTINYINT"}, {"type": "USMALLINT"}, {"type": "BINARY", "len": 23, "count":1}],
+      "partial_col_num": 3,
+      "columns": [{"type": "TIMESTAMP"},{"type": "INT", "len": 0}, {"type": "BIGINT"}, {"type": "FLOAT"}, {"type": "DOUBLE"}, {"type": "SMALLINT"}, {"type": "TINYINT"}, {"type": "BOOL"}, {"type": "NCHAR","len": 29, "count":1}, {"type": "UINT"}, {"type": "UBIGINT"}, {"type": "UTINYINT"}, {"type": "USMALLINT"}, {"type": "BINARY", "len": 23, "count":1}],
       "tags": [{"type": "TIMESTAMP"},{"type": "INT"}, {"type": "BIGINT"}, {"type": "FLOAT"}, {"type": "DOUBLE"}, {"type": "SMALLINT"}, {"type": "TINYINT"}, {"type": "BOOL"}, {"type": "NCHAR","len": 17, "count":1}, {"type": "UINT"}, {"type": "UBIGINT"}, {"type": "UTINYINT"}, {"type": "USMALLINT"}, {"type": "BINARY", "len": 19, "count":1}]
     }]
   }]
diff --git a/tests/develop-test/5-taos-tools/taosbenchmark/limit_offset_json.py b/tests/develop-test/5-taos-tools/taosbenchmark/limit_offset_json.py
index 20e64fa7458fecb87771bd98eec59a886e3663b3..803e57ecc873b89fdc941ee87f27ce38dde18a1a 100644
--- a/tests/develop-test/5-taos-tools/taosbenchmark/limit_offset_json.py
+++ b/tests/develop-test/5-taos-tools/taosbenchmark/limit_offset_json.py
@@ -56,6 +56,30 @@ class TDTestCase:
         tdSql.checkData(0, 0, 8)
         tdSql.query("select count(*) from db.stb")
         tdSql.checkData(0, 0, 40)
+        tdSql.query("select distinct(c1) from db.stb")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c3) from db.stb")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c4) from db.stb")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c5) from db.stb")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c6) from db.stb")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c7) from db.stb")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c8) from db.stb")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c9) from db.stb")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c10) from db.stb")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c11) from db.stb")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c12) from db.stb")
+        tdSql.checkData(0, 0, None)
+        tdSql.query("select distinct(c13) from db.stb")
+        tdSql.checkData(0, 0, None)
 
     def stop(self):
         tdSql.close()