diff --git a/.gitignore b/.gitignore
index 091e1d7361495df8da21c79f77e90cc20e595596..d1f1dc4dedb31da5b41a1046d7a4419881746071 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,7 @@ cmake-build-debug/
 cmake-build-release/
 cscope.out
 cscope.files
+tags
 .DS_Store
 debug/
 release/
diff --git a/examples/c/makefile b/examples/c/makefile
index 355d1a2d54c1293e909309dafe986daa716ac293..c57b0471e093f2732d85d7333e36befe414ad9b2 100644
--- a/examples/c/makefile
+++ b/examples/c/makefile
@@ -7,7 +7,6 @@ LFLAGS = '-Wl,-rpath,/usr/local/taos/driver/' -ltaos -lpthread -lm -lrt
 CFLAGS = -O3 -g -Wall -Wno-deprecated -fPIC -Wno-unused-result -Wconversion \
 	-Wno-char-subscripts -D_REENTRANT -Wno-format -D_REENTRANT -DLINUX \
 	-Wno-unused-function -D_M_X64 -I/usr/local/taos/include -std=gnu99 \
-	-I../../../deps/cJson/inc \
 	-Wno-unused-function -D_M_X64 -I/usr/local/taos/include -std=gnu99 \
 	-fsanitize=address -fsanitize=undefined -fno-sanitize-recover=all -fsanitize=float-divide-by-zero -fsanitize=float-cast-overflow -fno-sanitize=null -fno-sanitize=alignment
 
diff --git a/src/query/inc/qSqlparser.h b/src/query/inc/qSqlparser.h
index f3253c0d8396582454f9d4ef39e09f6ade181d5f..861b1e61144223db8dddc532636eb0395856271f 100644
--- a/src/query/inc/qSqlparser.h
+++ b/src/query/inc/qSqlparser.h
@@ -96,9 +96,11 @@ typedef struct SIntervalVal {
   SStrToken          offset;
 } SIntervalVal;
 
+typedef struct tSqlExpr tSqlExprTimestamp;
+
 typedef struct SRangeVal {
-  void          *start;
-  void          *end;
+  tSqlExprTimestamp *start;
+  tSqlExprTimestamp *end;
 } SRangeVal;
 
 typedef struct SSessionWindowVal {
diff --git a/src/query/src/qSqlParser.c b/src/query/src/qSqlParser.c
index 0c8854719c8063cb98ab052aed8494b98385d8d2..1fdf51e9b9ac04b1ad65daefc9056eb1d311873a 100644
--- a/src/query/src/qSqlParser.c
+++ b/src/query/src/qSqlParser.c
@@ -1159,6 +1159,10 @@ void destroySqlNode(SSqlNode *pSqlNode) {
   pSqlNode->fillType = NULL;
 
   tSqlExprDestroy(pSqlNode->pHaving);
+
+  tSqlExprDestroy(pSqlNode->pRange.start);
+  tSqlExprDestroy(pSqlNode->pRange.end);
+
   free(pSqlNode);
 }