fix test case

tests/pytest/query/queryJoin.py

@@ -112,8 +112,7 @@ class TDTestCase:
         tdSql.query("select stb_t.ts, stb_t.dscrption, stb_t.temperature, stb_t.id, stb_p.dscrption, stb_p.pressure from stb_p, stb_t where stb_p.ts=stb_t.ts and stb_p.id = stb_t.id")
         tdSql.checkRows(6)
 
-        tdSql.query("select stb_t.ts, stb_t.dscrption, stb_t.temperature, stb_t.pid, stb_p.id, stb_p.dscrption, stb_p.pressure,stb_v.velocity from stb_p, stb_t, stb_v where stb_p.ts=stb_t.ts and stb_p.ts=stb_v.ts and stb_p.id = stb_t.id")
-        tdSql.checkRows(2)
+        tdSql.error("select stb_t.ts, stb_t.dscrption, stb_t.temperature, stb_t.pid, stb_p.id, stb_p.dscrption, stb_p.pressure,stb_v.velocity from stb_p, stb_t, stb_v where stb_p.ts=stb_t.ts and stb_p.ts=stb_v.ts and stb_p.id = stb_t.id")
 
     def stop(self):
         tdSql.close()