diff --git a/include/libs/nodes/querynodes.h b/include/libs/nodes/querynodes.h
index f3c84c11bc..e14a43b1c2 100644
--- a/include/libs/nodes/querynodes.h
+++ b/include/libs/nodes/querynodes.h
@@ -55,8 +55,8 @@ typedef struct SDataType {
 typedef struct SExprNode {
   ENodeType type;
   SDataType resType;
-  char      aliasName[TSDB_COL_NAME_LEN + TSDB_COL_NAME_EXLEN];
-  char      userAlias[TSDB_COL_NAME_LEN + TSDB_COL_NAME_EXLEN];
+  char      aliasName[TSDB_COL_NAME_LEN];
+  char      userAlias[TSDB_COL_NAME_LEN];
   SArray*   pAssociation;
   bool      asAlias;
   bool      asParam;
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index 73f5569a7c..ec85c704d5 100755
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -7342,7 +7342,13 @@ static EDealRes pushDownBindSelectFunc(SNode** pNode, void* pContext) {
   if (nodesIsExprNode(*pNode)) {
     ((SExprNode*)*pNode)->bindTupleFuncIdx = pCxt->bindTupleFuncIdx;
     int32_t len = strlen(((SExprNode*)*pNode)->aliasName);
-    tsnprintf(((SExprNode*)*pNode)->aliasName + len, TSDB_COL_NAME_EXLEN, ".%d", pCxt->bindTupleFuncIdx);
+    if (len + TSDB_COL_NAME_EXLEN >= TSDB_COL_NAME_LEN) {
+      parserWarn("The alias name is too long, the extra part will be truncated");
+      tsnprintf(((SExprNode*)*pNode)->aliasName + TSDB_COL_NAME_EXLEN - TSDB_COL_NAME_EXLEN, TSDB_COL_NAME_EXLEN, ".%d",
+                pCxt->bindTupleFuncIdx);
+    } else {
+      tsnprintf(((SExprNode*)*pNode)->aliasName + len, TSDB_COL_NAME_EXLEN, ".%d", pCxt->bindTupleFuncIdx);
+    }
     SFunctionNode* pFunc = (SFunctionNode*)*pNode;
   }
   return DEAL_RES_CONTINUE;
@@ -7450,7 +7456,7 @@ static EDealRes rewriteSingleColsFunc(SNode** pNode, void* pContext) {
         return DEAL_RES_ERROR;
       } else {
         ((SExprNode*)pExpr)->asAlias = true;
-        tstrncpy(((SExprNode*)pExpr)->userAlias, pFunc->node.userAlias, TSDB_COL_NAME_LEN + TSDB_COL_NAME_EXLEN);
+        tstrncpy(((SExprNode*)pExpr)->userAlias, pFunc->node.userAlias, TSDB_COL_NAME_LEN);
       }
     }
     if(*pCxt->selectFuncList == NULL) {
diff --git a/tests/system-test/2-query/cols_function.py b/tests/system-test/2-query/cols_function.py
index fd41c3a1a1..2f46051bb7 100644
--- a/tests/system-test/2-query/cols_function.py
+++ b/tests/system-test/2-query/cols_function.py
@@ -180,6 +180,11 @@ class TDTestCase:
         tdSql.checkCols(2)
         tdSql.checkData(0, 0, 1734574929004)
         tdSql.checkData(0, 1, 4)
+        tdSql.query(f'select cols(last(ts), ts as t123456789t123456789t123456789t123456789t123456789t123456789t123456789, c0 cc) from {from_table}')
+        tdSql.checkRows(1)
+        tdSql.checkCols(2)
+        tdSql.checkData(0, 0, 1734574929004)
+        tdSql.checkData(0, 1, 4)
         tdSql.query(f'select cols(last(ts), c0, c1, c2, c3) from {from_table}')
         tdSql.checkRows(1)
         tdSql.checkCols(4)
@@ -362,6 +367,24 @@ class TDTestCase:
         tdSql.checkData(0, 2, 1734574929000)
         tdSql.checkData(0, 3, 1)
         tdSql.checkData(0, 4, 5)
+        tdSql.query(f'select cols(max(c0), ts as t123456789t123456789t123456789t123456789t123456789t123456789t123456789, c1 as c11), cols(first(c0), \
+            ts as t123456789t123456789t123456789t123456789t123456789t123456789t123456789, c1 c21), count(1) from {self.dbname}.meters')
+        tdSql.checkRows(1)
+        tdSql.checkCols(5)
+        tdSql.checkData(0, 0, 1734574929004)
+        tdSql.checkData(0, 1, 4)
+        tdSql.checkData(0, 2, 1734574929000)
+        tdSql.checkData(0, 3, 1)
+        tdSql.checkData(0, 4, 6)
+        tdSql.query(f'select cols(max(c0), ts as t123456789t123456789t123456789t123456789t123456789t123456789t123456789, c1 as c11), cols(first(c0), \
+            ts as t123456789t123456789t123456789t123456789t123456789t123456789t123456789, c1 c21), count(1) from {self.dbname}.meters where c0 < 4')
+        tdSql.checkRows(1)
+        tdSql.checkCols(5)
+        tdSql.checkData(0, 0, 1734574929003)
+        tdSql.checkData(0, 1, 3)
+        tdSql.checkData(0, 2, 1734574929000)
+        tdSql.checkData(0, 3, 1)
+        tdSql.checkData(0, 4, 5)
         tdSql.query(f'select cols(max(c0), ts as t1, c1 as c11), cols(first(c0), ts as t2, c1 c21), count(1) from test.meters where c0 < 4 group by tbname order by t1')
         tdSql.checkRows(2)
         tdSql.checkCols(5)