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support pushdown shared exprs in dml operator

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This commit is contained in:
yinyj17
2023-07-11 04:42:22 +00:00
committed by ob-robot
parent 4eb850e27e
commit ceeb9e31f6
7 changed files with 46 additions and 4 deletions
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6
src/sql/optimizer/ob_optimizer_util.cpp
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@ -4788,16 +4788,20 @@ bool ObOptimizerUtil::has_equal_join_conditions(const ObIArray<ObRawExpr*> &join
int ObOptimizerUtil::get_subplan_const_column(const ObDMLStmt &parent_stmt,
const uint64_t table_id,
const ObSelectStmt &child_stmt,
const ObIArray<ObRawExpr*> &exec_ref_exprs,
ObIArray<ObRawExpr *> &output_exprs)
{
int ret = OB_SUCCESS;
for (int64_t i = 0; OB_SUCC(ret) && i < child_stmt.get_select_item_size(); ++i) {
const ObRawExpr *expr = child_stmt.get_select_item(i).expr_;
ObRawExpr *parent_expr = NULL;
bool is_const = false;
if (OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr is null", K(ret), K(expr));
} else if (!expr->is_const_expr()) {
} else if (OB_FAIL(is_const_expr_recursively(expr, exec_ref_exprs, is_const))) {
LOG_WARN("failed to check expr is const expr", K(ret));
} else if (!is_const) {
// do nothing
} else if (NULL == (parent_expr = parent_stmt.get_column_expr_by_id(table_id,
OB_APP_MIN_COLUMN_ID + i))) {