[BUGFIX]fix hex to text null

2023-05-15 03:21:41 +00:00
parent 6a8ad504cd
commit 25728606d3
1 changed files with 2 additions and 0 deletions
--- a/src/sql/engine/basic/ob_expr_values_op.cpp
+++ b/src/sql/engine/basic/ob_expr_values_op.cpp
@ -393,6 +393,8 @@ int ObExprValuesOp::eval_values_op_dynamic_cast_to_lob(ObExpr &real_src_expr,
    ObDatum *src_datum;
    if (OB_FAIL(real_src_expr.eval(eval_ctx_, src_datum))) {
      LOG_WARN("fail to eval src", K(real_src_expr), K(cm_), K(ret));
+    } else if (src_datum->is_null()) {
+      dst_datum.set_null();
    } else if (src_datum->get_string().empty()
                && lib::is_oracle_mode()
                && dst_expr->datum_meta_.type_ == common::ObLongTextType) {