add some check

d4a38245 · Ganlin Zhao · 763e8bd6 · d4a38245
隐藏空白更改
内联并排

Showing with 3 addition and 0 deletion

source/libs/function/src/builtinsimpl.c source/libs/function/src/builtinsimpl.c +3 -0

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--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -2432,6 +2432,9 @@ int32_t lastFunction(SqlFunctionCtx* pCtx) {
 }

 static void firstLastTransferInfo(SFirstLastRes* pInput, SFirstLastRes* pOutput) {
+  if (!pInput->hasResult) {
+    return;
+  }
  pOutput->bytes = pInput->bytes;
  TSKEY *tsIn = (TSKEY*)(pInput->buf + pInput->bytes);
  TSKEY *tsOut = (TSKEY*)(pOutput->buf + pInput->bytes);