hcq/oceanbase
hcq/oceanbase
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

[CP] bugfix: substr expr get wrong result length in oracle mode

Browse Source
This commit is contained in:
shadowao 2024-05-23 14:15:43 +00:00 committed by ob-robot
parent 22870aa242
commit 824f103958
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/sql/engine/expr/ob_expr_substr.cpp
View File

@ -179,7 +179,7 @@ int ObExprSubstr::calc_result_length_oracle(const ObExprResType *types_array,
SQL_RESV_LOG(WARN, "fail to get mbmaxlen", K(ret), K(cs_type));
} else {
if (start_pos > 0 && substr_len > 0) {
if (start_pos + substr_len <= result_len + 1) {
if (start_pos <= INT64_MAX - substr_len && start_pos + substr_len <= result_len + 1) {
res_len = substr_len;
} else {
res_len = result_len - start_pos + 1;