diff --git a/cmake/define.inc b/cmake/define.inc
index 28770be2545ed007320e2de6385de0783c3138ba..84df6f54055cff0b6fe7f1820d46958787ca3c46 100755
--- a/cmake/define.inc
+++ b/cmake/define.inc
@@ -100,7 +100,7 @@ IF (TD_LINUX)
   ENDIF ()
   
   SET(DEBUG_FLAGS "-O0 -DDEBUG")
-  SET(RELEASE_FLAGS "-O0")
+  SET(RELEASE_FLAGS "-O0 -Wno-unused-variable -Wunused-but-set-variable")
   
   IF (${COVER} MATCHES "true")
     MESSAGE(STATUS "Test coverage mode, add extra flags")
diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 517fb32bb3357b77d80183e79ef98b123cd62e41..5c18739f7e5e343815bfdecef2c7fee9caf386c4 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -6387,4 +6387,4 @@ bool hasNormalColumnFilter(SQueryInfo* pQueryInfo) {
   }
 
   return false;
-}
\ No newline at end of file
+}
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 9b3f5927ab9650764ec13ae2669ee6bc98ca5486..7f4a6fe5d1340aaee8fdebdfba3adc5762afc739 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -1849,6 +1849,7 @@ static void doSetSqlExprAndResultFieldInfo(SQueryInfo* pQueryInfo, SQueryInfo* p
     }
 
     assert(matched);
+    (void)matched;
   }
 
   tscFieldInfoUpdateOffset(pNewQueryInfo);
diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index b873714c493d1a3d0da3ab78a0e9ddfeb0ea6ad0..1d74890baf8465b38cda79ebe1473767ef5729f6 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -5468,6 +5468,7 @@ static int32_t getColumnIndexInSource(SQueryTableMsg *pQueryMsg, SSqlFuncMsg *pE
     }
   }
   assert(0);
+  return -1;
 }
 
 bool validateExprColumnInfo(SQueryTableMsg *pQueryMsg, SSqlFuncMsg *pExprMsg, SColumnInfo* pTagCols) {