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fix eliminate anti join with generated column bug

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This commit is contained in:
obdev
2024-02-09 06:46:57 +00:00
committed by ob-robot
parent a929895ebb
commit 641f303439
1 changed files with 67 additions and 33 deletions
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100
src/sql/rewrite/ob_transform_join_elimination.cpp
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@ -2037,15 +2037,17 @@ int ObTransformJoinElimination::adjust_source_table(ObDMLStmt *source_stmt,
} else {
uint64_t source_table_id = source_table->table_id_;
uint64_t target_table_id = target_table->table_id_;
ColumnItem new_col;
ObColumnRefRawExpr *col_expr = NULL;
ObRawExprCopier expr_copier(*ctx_->expr_factory_);
ObSEArray<ColumnItem*, 4> columns_need_copy;
ObSEArray<uint64_t, 4> column_ids_for_copy;
// 1. collect column map already exists
for (int64_t i = 0; OB_SUCC(ret) && i < target_column_items.count(); ++i) {
ColumnItem *target_col = NULL;
ColumnItem *source_col = NULL;
uint64_t column_id = OB_INVALID_ID;
if (OB_ISNULL(target_col = target_stmt->get_column_item_by_id(target_table_id,
target_column_items.at(i).column_id_))) {
target_column_items.at(i).column_id_)) ||
OB_ISNULL(target_col->get_expr())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret));
} else if (NULL == output_map) {
@ -2066,43 +2068,75 @@ int ObTransformJoinElimination::adjust_source_table(ObDMLStmt *source_stmt,
source_col = source_stmt->get_column_item_by_id(source_table_id, column_id);
}
}
if (OB_FAIL(ret) || NULL != source_col) { // add new column to source_stmt
} else if (OB_FAIL(new_col.deep_copy(expr_copier, *target_col))) {
LOG_WARN("failed to deep copy column item", K(ret));
} else if (OB_ISNULL(col_expr = new_col.get_expr())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret));
} else {
source_col = &new_col;
new_col.table_id_ = source_table_id;
new_col.column_id_ = column_id;
col_expr->set_ref_id(source_table_id, column_id);
col_expr->set_table_name(source_table->get_table_name());
col_expr->get_relation_ids().reuse();
int64_t rel_id = source_stmt->get_table_bit_index(source_table_id);
if (OB_UNLIKELY(rel_id <= 0 || rel_id > source_stmt->get_table_items().count())) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid argument", K(ret), K(rel_id));
} else if (OB_FAIL(col_expr->add_relation_id(rel_id))) {
LOG_WARN("fail to add relation id", K(rel_id), K(ret));
} else if (OB_FAIL(col_expr->pull_relation_id())) {
LOG_WARN("failed to pull relation id and levels");
} else if (OB_FAIL(col_expr->formalize(ctx_->session_info_))) {
LOG_WARN("failed to formalize a new expr", K(ret));
} else if (OB_FAIL(source_stmt->add_column_item(new_col))) {
LOG_WARN("failed to add column item", K(new_col), K(ret));
}
}
if (OB_FAIL(ret)) {
} else if (OB_ISNULL(source_col) || OB_ISNULL(target_col)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret));
} else if (OB_ISNULL(source_col)) { // no map relationship found
if (OB_FAIL(columns_need_copy.push_back(target_col))) {
LOG_WARN("failed to push back expr", K(ret));
} else if (OB_FAIL(column_ids_for_copy.push_back(column_id))) {
LOG_WARN("failed to push back uint64_t", K(ret));
}
} else if (OB_FAIL(expr_copier.add_replaced_expr(target_col->get_expr(),
source_col->get_expr()))) {
// reuse the existing column mapping for copying the dependant expr of generated column
LOG_WARN("failed to add replaced expr", K(ret));
} else if (OB_FAIL(source_col_exprs.push_back(source_col->get_expr()))) {
LOG_WARN("failed to push back epxr", K(ret));
} else if (OB_FAIL(target_col_exprs.push_back(target_col->get_expr()))) {
LOG_WARN("failed to push back expr", K(ret));
}
}
// 2. deep copy column item if need
if (OB_FAIL(ret)) {
} else if (columns_need_copy.count() != column_ids_for_copy.count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected array count", K(columns_need_copy.count()), K(column_ids_for_copy.count()));
} else {
for (int64_t i = 0; OB_SUCC(ret) && i < columns_need_copy.count(); ++i) {
ColumnItem new_col;
ObColumnRefRawExpr *col_expr = NULL;
ColumnItem *target_col = columns_need_copy.at(i);
ColumnItem *source_col = NULL;
uint64_t column_id = column_ids_for_copy.at(i);
if (OB_ISNULL(target_col)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret));
} else if (OB_FAIL(new_col.deep_copy(expr_copier, *target_col))) {
LOG_WARN("failed to deep copy column item", K(ret));
} else if (OB_ISNULL(col_expr = new_col.get_expr())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret));
} else {
source_col = &new_col;
new_col.table_id_ = source_table_id;
new_col.column_id_ = column_id;
col_expr->set_ref_id(source_table_id, column_id);
col_expr->set_table_name(source_table->get_table_name());
col_expr->get_relation_ids().reuse();
int64_t rel_id = source_stmt->get_table_bit_index(source_table_id);
if (OB_UNLIKELY(rel_id <= 0 || rel_id > source_stmt->get_table_items().count())) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid argument", K(ret), K(rel_id));
} else if (OB_FAIL(col_expr->add_relation_id(rel_id))) {
LOG_WARN("fail to add relation id", K(rel_id), K(ret));
} else if (OB_FAIL(col_expr->pull_relation_id())) {
LOG_WARN("failed to pull relation id and levels");
} else if (OB_FAIL(col_expr->formalize(ctx_->session_info_))) {
LOG_WARN("failed to formalize a new expr", K(ret));
} else if (OB_FAIL(source_stmt->add_column_item(new_col))) {
LOG_WARN("failed to add column item", K(new_col), K(ret));
}
}
if (OB_FAIL(ret)) {
} else if (OB_ISNULL(source_col) || OB_ISNULL(target_col)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret));
} else if (OB_FAIL(source_col_exprs.push_back(source_col->get_expr()))) {
LOG_WARN("failed to push back epxr", K(ret));
} else if (OB_FAIL(target_col_exprs.push_back(target_col->get_expr()))) {
LOG_WARN("failed to push back expr", K(ret));
}
}
}
}
return ret;
}