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fix: replace func wrongly processed empty LONGTEXT string

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PatZhuang
2024-10-16 16:43:40 +00:00
committed by ob-robot
parent 6232bb825c
commit 4ef69f9ce9
1 changed files with 12 additions and 1 deletions
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13
src/sql/engine/expr/ob_expr_replace.cpp
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@ -235,7 +235,18 @@ int ObExprReplace::eval_replace(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &exp
} else if (text->is_null()
|| (is_mysql && from->is_null())
|| (is_mysql && NULL != to && to->is_null())) {
if (is_mysql && !from->is_null() && 0 == from->len_) {
ObExpr *from_expr = expr.args_[1];
int64_t from_len = 0;
if (!ob_is_text_tc(from_expr->datum_meta_.type_)) {
from_len = from->len_;
} else {
ObLobLocatorV2 locator(from->get_string(), from_expr->obj_meta_.has_lob_header());
if (OB_FAIL(locator.get_lob_data_byte_len(from_len))) {
LOG_WARN("get lob data byte length failed", K(ret), K(locator));
}
}
if (OB_FAIL(ret)){
} else if (is_mysql && !from->is_null() && 0 == from_len) {
ObSolidifiedVarsGetter helper(expr, ctx, ctx.exec_ctx_.get_my_session());
const ObSQLSessionInfo *session = ctx.exec_ctx_.get_my_session();
uint64_t compat_version = 0;