diff --git a/tests/system-test/2-query/abs.py b/tests/system-test/2-query/abs.py
index eb31abc6dd..ccf83df952 100644
--- a/tests/system-test/2-query/abs.py
+++ b/tests/system-test/2-query/abs.py
@@ -341,6 +341,7 @@ class TDTestCase:
 
 
     def abs_func_filter(self):
+        tdSql.execute("use db")
         tdSql.query("select c1, abs(c1) -0 ,ceil(c1-0.1)-0 ,floor(c1+0.1)-0.1 ,ceil(log(c1,2)-0.5) from ct4 where c1>5 ")
         tdSql.checkRows(3)
         tdSql.checkData(0,0,8)
diff --git a/tests/system-test/2-query/ceil.py b/tests/system-test/2-query/ceil.py
index 58d506b3e0..4196a5a8ce 100644
--- a/tests/system-test/2-query/ceil.py
+++ b/tests/system-test/2-query/ceil.py
@@ -340,6 +340,7 @@ class TDTestCase:
         tdSql.checkData(1, 2, 7.900000000)
 
     def abs_func_filter(self):
+        tdSql.execute("use db")
         tdSql.query("select c1, abs(c1) -0 ,ceil(c1-0.1)-0 ,floor(c1+0.1)-0.1 ,ceil(log(c1,2)-0.5) from ct4 where c1>5 ")
         tdSql.checkRows(3)
         tdSql.checkData(0,0,8)
diff --git a/tests/system-test/2-query/floor.py b/tests/system-test/2-query/floor.py
index 4e4de479f6..c955c24e05 100644
--- a/tests/system-test/2-query/floor.py
+++ b/tests/system-test/2-query/floor.py
@@ -340,6 +340,7 @@ class TDTestCase:
         tdSql.checkData(1, 2, 6.900000000)
 
     def abs_func_filter(self):
+        tdSql.execute("use db")
         tdSql.query("select c1, abs(c1) -0 ,ceil(c1-0.1)-0 ,floor(c1+0.1)-0.1 ,ceil(log(c1,2)-0.5) from ct4 where c1>5 ")
         tdSql.checkRows(3)
         tdSql.checkData(0,0,8)
diff --git a/tests/system-test/2-query/log.py b/tests/system-test/2-query/log.py
index 2b333ed798..e6762b2d61 100644
--- a/tests/system-test/2-query/log.py
+++ b/tests/system-test/2-query/log.py
@@ -507,6 +507,7 @@ class TDTestCase:
 
 
     def abs_func_filter(self):
+        tdSql.execute("use db")
         tdSql.query("select c1, abs(c1) -0 ,ceil(c1-0.1)-0 ,floor(c1+0.1)-0.1 ,ceil(log(c1,2)-0.5) from ct4 where c1>5 ")
         tdSql.checkRows(3)
         tdSql.checkData(0,0,8)
diff --git a/tests/system-test/2-query/round.py b/tests/system-test/2-query/round.py
index bc3a25782a..223e56bce6 100644
--- a/tests/system-test/2-query/round.py
+++ b/tests/system-test/2-query/round.py
@@ -344,6 +344,7 @@ class TDTestCase:
         tdSql.checkData(1, 2, 7.900000000)
 
     def abs_func_filter(self):
+        tdSql.execute("use db")
         tdSql.query("select c1, abs(c1) -0 ,ceil(c1-0.1)-0 ,floor(c1+0.1)-0.1 ,ceil(log(c1,2)-0.5) from ct4 where c1>5 ")
         tdSql.checkRows(3)
         tdSql.checkData(0,0,8)