diff --git a/tests/system-test/2-query/min.py b/tests/system-test/2-query/min.py
index 60a8c105f1520df5b1ad8277e79a7608afe474c8..c27e9926ff52e178afe230872d70c6ab269d6983 100644
--- a/tests/system-test/2-query/min.py
+++ b/tests/system-test/2-query/min.py
@@ -12,30 +12,30 @@ class TDTestCase:
 
         self.rowNum = 10
         self.ts = 1537146000000
-        
+
     def run(self):
         tdSql.prepare()
 
-        intData = []        
+        intData = []
         floatData = []
 
-        tdSql.execute('''create table stb(ts timestamp, col1 tinyint, col2 smallint, col3 int, col4 bigint, col5 float, col6 double, 
+        tdSql.execute('''create table stb(ts timestamp, col1 tinyint, col2 smallint, col3 int, col4 bigint, col5 float, col6 double,
                     col7 bool, col8 binary(20), col9 nchar(20), col11 tinyint unsigned, col12 smallint unsigned, col13 int unsigned, col14 bigint unsigned) tags(loc nchar(20))''')
         tdSql.execute("create table stb_1 using stb tags('beijing')")
-        tdSql.execute('''create table ntb(ts timestamp, col1 tinyint, col2 smallint, col3 int, col4 bigint, col5 float, col6 double, 
+        tdSql.execute('''create table ntb(ts timestamp, col1 tinyint, col2 smallint, col3 int, col4 bigint, col5 float, col6 double,
                     col7 bool, col8 binary(20), col9 nchar(20), col11 tinyint unsigned, col12 smallint unsigned, col13 int unsigned, col14 bigint unsigned)''')
         for i in range(self.rowNum):
-            tdSql.execute("insert into ntb values(%d, %d, %d, %d, %d, %f, %f, %d, 'taosdata%d', '涛思数据%d', %d, %d, %d, %d)" 
+            tdSql.execute("insert into ntb values(%d, %d, %d, %d, %d, %f, %f, %d, 'taosdata%d', '涛思数据%d', %d, %d, %d, %d)"
                         % (self.ts + i, i + 1, i + 1, i + 1, i + 1, i + 0.1, i + 0.1, i % 2, i + 1, i + 1, i + 1, i + 1, i + 1, i + 1))
-            intData.append(i + 1)            
+            intData.append(i + 1)
             floatData.append(i + 0.1)
         for i in range(self.rowNum):
-            tdSql.execute("insert into stb_1 values(%d, %d, %d, %d, %d, %f, %f, %d, 'taosdata%d', '涛思数据%d', %d, %d, %d, %d)" 
+            tdSql.execute("insert into stb_1 values(%d, %d, %d, %d, %d, %f, %f, %d, 'taosdata%d', '涛思数据%d', %d, %d, %d, %d)"
                         % (self.ts + i, i + 1, i + 1, i + 1, i + 1, i + 0.1, i + 0.1, i % 2, i + 1, i + 1, i + 1, i + 1, i + 1, i + 1))
-            intData.append(i + 1)            
-            floatData.append(i + 0.1)                        
+            intData.append(i + 1)
+            floatData.append(i + 0.1)
 
-        # max verifacation 
+        # max verifacation
         tdSql.error("select min(ts) from stb_1")
         tdSql.error("select min(ts) from db.stb_1")
         tdSql.error("select min(col7) from stb_1")
@@ -206,7 +206,7 @@ class TDTestCase:
         tdSql.query("select min(col1) from ntb where col2>=5")
         tdSql.checkData(0,0,5)
 
-        
+
     def stop(self):
         tdSql.close()
         tdLog.success("%s successfully executed" % __file__)