[CP] fix decode bug

2023-07-28 06:48:21 +00:00
parent 0c5007d64d
commit 4108dccfbe
1 changed files with 1 additions and 1 deletions
--- a/src/sql/engine/expr/ob_expr_oracle_decode.cpp
+++ b/src/sql/engine/expr/ob_expr_oracle_decode.cpp
@ -380,7 +380,7 @@ int ObExprOracleDecode::calc_result_type_for_literal(ObExprResType &type,
      // 兼容ORACLE: 忽略掉calc_type阶段的计算错误, 在实际计算时再报
      ret = OB_SUCCESS;
    } else if (result.is_null()) {
-      // do nothing ...
+      type.set_length(0);
    } else if (!result.is_string_type()) {
      ret = OB_ERR_UNEXPECTED;
      LOG_WARN("decode calc literal result is not string", K(ret));