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[BUGFIX] fix dbms lob instr when partten larger than lob

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obdev 2023-02-20 12:45:01 +00:00 committed by ob-robot
parent d1125dee41
commit 2e954397ec
1 changed files with 8 additions and 1 deletions
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9
src/sql/engine/expr/ob_expr_instr.cpp
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@ -136,14 +136,21 @@ static int calc_oracle_instr_text(ObTextStringIter &haystack_iter,
ObString haystack_data;
ObString needle_data;
int64_t needle_char_len = 0;
int64_t haystack_char_len = 0;
int64_t abs_pos_int = (pos_int > 0) ? (pos_int) : (-pos_int);
if (OB_FAIL(haystack_iter.init(0, NULL, &calc_alloc))) {
LOG_WARN("init haystack_iter failed ", K(ret), K(haystack_iter));
} else if (OB_FAIL(haystack_iter.get_char_len(haystack_char_len))) {
LOG_WARN("get haystack char len failed ", K(ret), K(haystack_iter));
} else if (OB_FAIL(needle_iter.init(0, NULL, &calc_alloc))) {
LOG_WARN("init needle_iter failed ", K(ret), K(needle_iter));
} else if (OB_FAIL(needle_iter.get_full_data(needle_data))) {
LOG_WARN("get needle data failed ", K(ret), K(needle_iter));
} else if (OB_FAIL(needle_iter.get_char_len(needle_char_len))) {
LOG_WARN("init lob str iter failed ", K(ret), K(needle_iter));
LOG_WARN("get needle char len failed ", K(ret), K(needle_iter));
} else if (haystack_char_len - abs_pos_int < needle_char_len) {
// pattern length is bigger than content, just return zero
idx = 0;
} else {
if (haystack_iter.is_outrow_lob()) {
haystack_iter.set_reserved_len(static_cast<size_t>(needle_char_len) - 1);