Merge pull request #20341 from taosdata/fix/TD-23004

fix(query): fix scalar calculation crash in stream when input rows is 0

source/libs/scalar/src/scalar.c

@@ -59,6 +59,8 @@ int32_t sclCreateColumnInfoData(SDataType *pType, int32_t numOfRows, SScalarPara
 
   pParam->columnData = pColumnData;
   pParam->colAlloced = true;
+  pParam->numOfRows = numOfRows;
+
   return TSDB_CODE_SUCCESS;
 }
 
@@ -740,6 +742,10 @@ int32_t sclExecFunction(SFunctionNode *node, SScalarCtx *ctx, SScalarParam *outp
       SCL_ERR_JRET(code);
     }
 
+    if (rowNum == 0) {
+      goto _return;
+    }
+
     code = (*ffpSet.process)(params, paramNum, output);
     if (code) {
       sclError("scalar function exec failed, funcId:%d, code:%s", node->funcId, tstrerror(code));