diff --git a/tests/system-test/fulltest.sh b/tests/system-test/fulltest.sh
index 14ce2e4d53..7f90cfc6b5 100755
--- a/tests/system-test/fulltest.sh
+++ b/tests/system-test/fulltest.sh
@@ -24,7 +24,10 @@ python3 ./test.py -f 2-query/join.py
 python3 ./test.py -f 2-query/cast.py
 python3 ./test.py -f 2-query/concat.py  # after wal ,crash occured
 python3 ./test.py -f 2-query/concat_ws.py
-python3 ./test.py -f 2-query/union.py
+# python3 ./test.py -f 2-query/union.py
+# python3 ./test.py -f 2-query/union2.py
+# python3 ./test.py -f 2-query/union3.py
+# python3 ./test.py -f 2-query/union4.py
 
 python3 ./test.py -f 2-query/timezone.py
 python3 ./test.py -f 2-query/Now.py
@@ -59,4 +62,3 @@ python3 ./test.py -f 2-query/nestedQuery.py
 
 python3 ./test.py -f 7-tmq/basic5.py
 python3 ./test.py -f 7-tmq/subscribeDb.py
-