Fix base64 bug: ob doesn't return null as expected

2023-01-04 11:38:19 +00:00
parent a2c0577954
commit 1c9259243e
3 changed files with 10 additions and 6 deletions
--- a/src/sql/engine/expr/ob_expr_from_base64.cpp
+++ b/src/sql/engine/expr/ob_expr_from_base64.cpp
@ -179,7 +179,9 @@ int ObExprFromBase64::eval_from_base64_batch(const ObExpr &expr, ObEvalCtx &ctx,
      const ObString & in_raw = arg->get_string();
      ObLength in_raw_len = in_raw.length();
      const char *buf = in_raw.ptr();
-      if (NULL == buf) {
+      if (arg->is_null()) {
+        res[j].set_null();
+      } else if (NULL == buf) {
        res[j].set_string(nullptr, 0);
      } else {
        char *output_buf = nullptr;