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PATCH bugfix to opensource branch

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This commit is contained in:
obdev
2021-07-19 22:33:13 +08:00
committed by wangzelin.wzl
parent 5b5c04ff49
commit e03cb03357
34 changed files with 1471 additions and 1150 deletions
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18
src/sql/rewrite/ob_transform_pre_process.cpp
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@ -3618,27 +3618,35 @@ int ObTransformPreProcess::try_transform_common_rownum_as_limit(ObDMLStmt* stmt,
{
int ret = OB_SUCCESS;
limit_expr = NULL;
ObRawExpr* limit_value = NULL;
ObRawExpr *my_rownum = NULL;
ObRawExpr *limit_value = NULL;
ObItemType op_type = T_INVALID;
bool is_valid = false;
if (OB_ISNULL(stmt) || OB_ISNULL(ctx_) || OB_ISNULL(ctx_->expr_factory_) || OB_ISNULL(ctx_->session_info_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected null", K(ret));
} else if (OB_FAIL(stmt->get_rownum_expr(my_rownum))) {
LOG_WARN("failed to get my rownum expr", K(ret));
} else {
ObIArray<ObRawExpr*>& conditions = stmt->get_condition_exprs();
int64_t expr_idx = -1;
bool is_eq_cond = false;
bool is_const_filter = false;
for (int64_t i = 0; OB_SUCC(ret) && !is_eq_cond && i < conditions.count(); ++i) {
ObRawExpr* cond_expr = NULL;
ObRawExpr* const_expr = NULL;
ObRawExpr *cond_expr = NULL;
ObRawExpr *const_expr = NULL;
ObRawExpr *rownum_expr = NULL;
ObItemType expr_type = T_INVALID;
if (OB_ISNULL(cond_expr = conditions.at(i))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("condition expr is null", K(ret), K(i));
} else if (OB_FAIL(ObOptimizerUtil::get_rownum_filter_info(cond_expr, expr_type, const_expr, is_const_filter))) {
} else if (OB_FAIL(ObOptimizerUtil::get_rownum_filter_info(cond_expr,
expr_type,
rownum_expr,
const_expr,
is_const_filter))) {
LOG_WARN("failed to check is filter rownum", K(ret));
} else if (!is_const_filter) {
} else if (!is_const_filter || rownum_expr != my_rownum) {
// do nothing
} else if (T_OP_LE == expr_type || T_OP_LT == expr_type) {
limit_value = const_expr;