diff --git a/tests/parallel_test/run_container.sh b/tests/parallel_test/run_container.sh
index 3a7193b39cf5d81ab14cb2c4fbe9403af370e797..bb57f238f029e2098f70fc553a8e6280ff46e5c4 100755
--- a/tests/parallel_test/run_container.sh
+++ b/tests/parallel_test/run_container.sh
@@ -93,7 +93,7 @@ if [ ! -d "${TMP_DIR}/thread_volume/$thread_no/$exec_dir" ]; then
     cp -rf ${REPDIR}/tests/$subdir ${TMP_DIR}/thread_volume/$thread_no/
 fi
 
-if [ ! -d "${SOURCEDIR}/${packageName}" ]; then
+if [ ! -f "${SOURCEDIR}/${packageName}" ]; then
      wget -P  ${SOURCEDIR} https://taosdata.com/assets-download/3.0/${packageName}
 fi
 
diff --git a/tests/system-test/0-others/compatibility.py b/tests/system-test/0-others/compatibility.py
index 4dae6f06cfc588c0cc993f3860d21a9b30aac6ca..2b059615e975b5ba0cc0eba143f8f0f73acb3611 100644
--- a/tests/system-test/0-others/compatibility.py
+++ b/tests/system-test/0-others/compatibility.py
@@ -129,12 +129,22 @@ class TDTestCase:
 
         tdsql=tdCom.newTdSql()
         tdLog.printNoPrefix(f"==========step4:verify backticks in taos Sql-TD18542")
+        tdsql.execute("drop database if exists db")
         tdsql.execute("create database db")
         tdsql.execute("use db")
         tdsql.execute("create stable db.stb1 (ts timestamp, c1 int) tags (t1 int);")
-        tdsql.execute("insert into db.ct1 using db.stb1 TAGS(9) values(now(),11);")
+        tdsql.execute("insert into db.ct1 using db.stb1 TAGS(1) values(now(),11);")
         tdsql.error(" insert into `db.ct2` using db.stb1 TAGS(9) values(now(),11);")
         tdsql.error(" insert into db.`db.ct2` using db.stb1 TAGS(9) values(now(),11);")
+        tdsql.execute("insert into `db`.ct3 using db.stb1 TAGS(3) values(now(),13);")
+        tdsql.query("select * from db.ct3")
+        tdsql.checkData(0,1,13)
+        tdsql.execute("insert into db.`ct4` using db.stb1 TAGS(4) values(now(),14);")
+        tdsql.query("select * from db.ct4")
+        tdsql.checkData(0,1,14)
+        tdsql.query("describe  information_schema.ins_databases;")
+        # for i in  tdsql.queryResult[i][0]:
+        #     tdsql.checkData(0,1,13)
 
     def stop(self):
         tdSql.close()