diff --git a/src/client/src/tscProfile.c b/src/client/src/tscProfile.c
index 74294d38e009a6b0c28991e00e032b7be3aba8ab..ee89b5f580cd7e66205c3c9dcfd0c2b7fe5c0cf2 100644
--- a/src/client/src/tscProfile.c
+++ b/src/client/src/tscProfile.c
@@ -94,7 +94,7 @@ void tscSaveSlowQuery(SSqlObj *pSql) {
   tscTrace("%p query time:%" PRId64 " sql:%s", pSql, pSql->res.useconds, pSql->sqlstr);
 
   char *sql = malloc(200);
-  int   len = snprintf(sql, 200, "insert into %s.slowquery values(now, '%s', %" PRId64 ", %" PRId64 ", '", tsMonitorDbName,
+  int   len = snprintf(sql, 190, "insert into %s.slowquery values(now, '%s', %" PRId64 ", %" PRId64 ", '", tsMonitorDbName,
           pSql->pTscObj->user, pSql->stime, pSql->res.useconds);
   int sqlLen = snprintf(sql + len, TSDB_SHOW_SQL_LEN, "%s", pSql->sqlstr);
   if (sqlLen > TSDB_SHOW_SQL_LEN - 1) {
diff --git a/tests/examples/c/demo.c b/tests/examples/c/demo.c
index e27c73891f4b6ccc5319f2f9b6f47bcbba344b18..e5746084e509aec4899991b68bcb684b503f7adf 100644
--- a/tests/examples/c/demo.c
+++ b/tests/examples/c/demo.c
@@ -26,13 +26,12 @@
 void taosMsleep(int mseconds);
 
 static int32_t doQuery(TAOS* taos, const char* sql) {
-  int32_t code = taos_query(taos, sql);
-  if (code != 0) {
+  TAOS_RES* res = taos_query(taos, sql);
+  if (taos_errno(res) != 0) {
     printf("failed to execute query, reason:%s\n", taos_errstr(taos));
     return -1;
   }
   
-  TAOS_RES* res = taos_use_result(taos);
   TAOS_ROW row = NULL;
   char buf[512] = {0};
   
@@ -46,7 +45,6 @@ static int32_t doQuery(TAOS* taos, const char* sql) {
   }
   
   taos_free_result(res);
-
   return 0;
 }
 
@@ -81,6 +79,7 @@ static __attribute__((unused)) void multiThreadTest(int32_t numOfThreads, void*
     pthread_join(threadId[i], NULL);
   }
   
+  free(threadId);
   pthread_attr_destroy(&thattr);
 }
 
@@ -108,24 +107,11 @@ int main(int argc, char *argv[]) {
   printf("success to connect to server\n");
   
 //  multiThreadTest(1, taos);
-  doQuery(taos, "select max(c1), min(c2), sum(c3), avg(c4), first(c7), last(c8), first(c9) from lm2_db0.lm2_stb0 where ts >= 1537146000000 and ts <= 1543145400000 interval(5m) fill(value, -1, -2) group by t1 limit 2 offset 10;");
+   doQuery(taos, "insert into tb9 (ts, c1, c2) using stb (t1, t2) tags ('tag4', 4)   values ( now + 4s, 'binary4', 4);");
 //  for(int32_t i = 0; i < 100000; ++i) {
 //    doQuery(taos, "insert into t1 values(now, 2)");
 //  }
 //  doQuery(taos, "create table t1(ts timestamp, k binary(12), f nchar(2))");
-
-//  doQuery(taos, "insert into tm0 values('2020-1-1 1:1:1', 'abc')");
-//  doQuery(taos, "create table if not exists tm0 (ts timestamp, k int);");
-//  doQuery(taos, "insert into tm0 values('2020-1-1 1:1:1', 1);");
-//  doQuery(taos, "insert into tm0 values('2020-1-1 1:1:2', 2);");
-//  doQuery(taos, "insert into tm0 values('2020-1-1 1:1:3', 3);");
-//  doQuery(taos, "insert into tm0 values('2020-1-1 1:1:4', 4);");
-//  doQuery(taos, "insert into tm0 values('2020-1-1 1:1:5', 5);");
-//  doQuery(taos, "insert into tm0 values('2020-1-1 1:1:6', 6);");
-//  doQuery(taos, "insert into tm0 values('2020-1-1 1:1:7', 7);");
-//  doQuery(taos, "insert into tm0 values('2020-1-1 1:1:8', 8);");
-//  doQuery(taos, "insert into tm0 values('2020-1-1 1:1:9', 9);");
-//  doQuery(taos, "select sum(k),count(*) from m1 group by a");
   
   taos_close(taos);
   return 0;
@@ -172,10 +158,6 @@ int main(int argc, char *argv[]) {
     exit(1);
   }
   
-  
-  result = taos_use_result(taos);
-  
-  
   if (result == NULL) {
     printf("failed to get result, reason:%s\n", taos_errstr(taos));
     exit(1);
diff --git a/tests/script/general/parser/testSuite.sim b/tests/script/general/parser/testSuite.sim
index cc95246f061ae8e053e54ee27b13e86c85aefe77..4a3da2f2a0961d298fca5fd332e0259c409f6471 100644
--- a/tests/script/general/parser/testSuite.sim
+++ b/tests/script/general/parser/testSuite.sim
@@ -40,45 +40,47 @@
 #run general/parser/nchar.sim
 #sleep 2000
 ##run general/parser/null_char.sim
-sleep 2000
-run general/parser/single_row_in_tb.sim
-sleep 2000
-run general/parser/select_from_cache_disk.sim
-sleep 2000
-run general/parser/selectResNum.sim
-sleep 2000
-run general/parser/mixed_blocks.sim
-sleep 2000
-run general/parser/limit1.sim
-sleep 2000
-run general/parser/limit.sim
-sleep 2000
-run general/parser/limit1_tblocks100.sim
-sleep 2000
-run general/parser/select_across_vnodes.sim
-sleep 2000
-run general/parser/slimit1.sim
-sleep 2000
-run general/parser/tbnameIn.sim
-sleep 2000
+#sleep 2000
+#run general/parser/single_row_in_tb.sim
+#sleep 2000
+#run general/parser/select_from_cache_disk.sim
+#sleep 2000
+#run general/parser/selectResNum.sim
+#sleep 2000
+#run general/parser/mixed_blocks.sim
+#sleep 2000
+#run general/parser/limit1.sim
+#sleep 2000
+#run general/parser/limit.sim
+#sleep 2000
+#run general/parser/limit1_tblocks100.sim
+#sleep 2000
+#run general/parser/select_across_vnodes.sim
+#sleep 2000
+#run general/parser/slimit1.sim
+#sleep 2000
+#run general/parser/tbnameIn.sim
+#sleep 2000
 run general/parser/projection_limit_offset.sim
 sleep 2000
 run general/parser/limit2.sim
 sleep 2000
-run general/parser/fill.sim
-sleep 2000
-run general/parser/fill_stb.sim
-sleep 2000
-run general/parser/where.sim
-sleep 2000
-run general/parser/slimit.sim
+#run general/parser/fill.sim
+#sleep 2000
+#run general/parser/fill_stb.sim
+#sleep 2000
+#run general/parser/where.sim
+#sleep 2000
+#run general/parser/slimit.sim
+#sleep 2000
+#run general/parser/select_with_tags.sim
+#sleep 2000
+#run general/parser/interp.sim
 sleep 2000
-run general/parser/select_with_tags.sim
+run general/parser/tags_dynamically_specifiy.sim
 sleep 2000
-run general/parser/interp.sim
+run general/parser/groupby.sim
 
-sleep 2000
-run general/parser/tags_dynamically_specifiy.sim
 sleep 2000
 run general/parser/set_tag_vals.sim
 
@@ -97,9 +99,6 @@ sleep 2000
 run general/parser/join.sim
 sleep 2000
 run general/parser/join_multivnode.sim
-
-sleep 2000
-run general/parser/groupby.sim
 sleep 2000
 run general/parser/binary_escapeCharacter.sim
 sleep 2000