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[FEAT MERGE]4_1_sql_feature

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Co-authored-by: leslieyuchen <leslieyuchen@gmail.com>
Co-authored-by: Charles0429 <xiezhenjiang@gmail.com>
Co-authored-by: raywill <hustos@gmail.com>
This commit is contained in:
obdev
2023-01-28 16:01:26 +08:00
committed by ob-robot
parent 3080f2b66f
commit 2d19a9d8f5
846 changed files with 161957 additions and 116661 deletions
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21
src/sql/rewrite/ob_transform_expr_pullup.cpp
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@ -10,14 +10,13 @@
* See the Mulan PubL v2 for more details.
*/
#define USING_LOG_PREFIX SQL_REWRITE
#include "ob_transform_expr_pullup.h"
#include "sql/resolver/expr/ob_raw_expr_util.h"
#include "sql/optimizer/ob_optimizer_util.h"
#include "sql/rewrite/ob_transform_utils.h"
#include "common/ob_smart_call.h"
#define USING_LOG_PREFIX SQL_REWRITE
namespace oceanbase {
namespace sql {
using namespace common;
@ -172,6 +171,7 @@ int ObTransformExprPullup::need_transform(const ObIArray<ObParentDMLStmt> &paren
if (OB_NOT_NULL(outline_hint = query_hint->get_outline_trans_hint(ctx_->trans_list_loc_))) {
if (outline_hint->get_hint_type() != get_hint_type()) {
need_trans = false;
OPT_TRACE("outline reject transform");
} else {
for (int64_t i = 0; OB_SUCC(ret) && i < stmt.get_table_size(); ++i) {
const TableItem *table = NULL;
@ -269,6 +269,8 @@ int ObExprNodeMap::add_expr_map(ObRawExpr *expr)
bool is_exist = false;
if (OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
} else if (expr->is_const_or_param_expr()) {
// do nothing
} else {
ExprCounter counter;
uint64_t hash_v = get_hash_value(expr);
@ -554,8 +556,6 @@ int ObTransformExprPullup::adjust_subquery(ObRawExpr *expr,
ObQueryRefRawExpr &query_ref = static_cast<ObQueryRefRawExpr &>(*expr);
if (OB_FAIL(parent.add_subquery_ref(&query_ref))) {
LOG_WARN("fail to add subquery ref", K(ret));
} else if (OB_FAIL(query_ref.get_ref_stmt()->adjust_subquery_stmt_parent(&child, &parent))) {
LOG_WARN("fail to adjust subquery parent", K(ret));
}
}
@ -592,6 +592,7 @@ int ObTransformExprPullup::rewrite_decision_by_hint(ObSelectStmt &parent,
}
} else {
go_rewrite = false;
OPT_TRACE("outline reject transform");
}
} else {
const ObHint *child_no_rewrite = child.get_stmt_hint().get_no_rewrite_hint();
@ -601,6 +602,8 @@ int ObTransformExprPullup::rewrite_decision_by_hint(ObSelectStmt &parent,
go_rewrite = pullup_hint->is_enable_hint();
if (!go_rewrite && OB_FAIL(ctx_->add_used_trans_hint(pullup_hint))) {
LOG_WARN("failed to add used trans hint", K(ret));
} else if (!go_rewrite) {
OPT_TRACE("hint reject transform");
}
reason = CTRL_BY_PULLUP_HINT;
} else if (OB_NOT_NULL(child_no_rewrite) || OB_NOT_NULL(parent_no_rewrite)) {
@ -611,9 +614,11 @@ int ObTransformExprPullup::rewrite_decision_by_hint(ObSelectStmt &parent,
LOG_WARN("failed to add used trans hint", K(ret));
}
reason = CTRL_BY_NO_REWRITE_HINT;
OPT_TRACE("parent or child`s no rewrite hint reject transform");
} else {
go_rewrite = stmt_may_reduce_row_count;
reason = CTRL_BY_SELF_DECISION;
OPT_TRACE("stmt may reduce row count:", stmt_may_reduce_row_count);
}
}
LOG_DEBUG("check hint rewrite control", K(go_rewrite), K(stmt_may_reduce_row_count), K(reason));
@ -691,11 +696,13 @@ int ObTransformExprPullup::pullup_expr_from_view(TableItem *view,
//search for exprs cannot pullup
if (OB_SUCC(ret)) {
ObSEArray<ObRawExpr *, 16> expr_cannot_pullup;
ObStmtExprGetter visitor;
visitor.remove_scope(SCOPE_SELECT);
if (OB_FAIL(child_reject_map.init())) {
LOG_WARN("fail to init shared exprs", K(ret));
} else if (OB_FAIL(child_select_map.init())) {
LOG_WARN("failed to init select map", K(ret));
} else if (OB_FAIL(child.get_relation_exprs(expr_cannot_pullup, RelExprCheckerBase::FIELD_LIST_SCOPE))) {
} else if (OB_FAIL(child.get_relation_exprs(expr_cannot_pullup, visitor))) {
LOG_WARN("fail to get relation exprs", K(ret));
}
for (int64_t i = 0; OB_SUCC(ret) && i < select_exprs.count(); ++i) {
@ -808,7 +815,8 @@ int ObTransformExprPullup::pullup_expr_from_view(TableItem *view,
}
if (OB_SUCC(ret)) {
if (OB_FAIL(parent.replace_inner_stmt_expr(old_child_project_columns, select_exprs_can_pullup))) {
if (OB_FAIL(parent.replace_relation_exprs(old_child_project_columns,
select_exprs_can_pullup))) {
LOG_WARN("fail to replace inner stmt expr", K(ret));
} else if (OB_FAIL(parent.formalize_stmt(ctx_->session_info_))) {
LOG_WARN("fail to formalize stmt", K(ret));
@ -851,6 +859,5 @@ int ObTransformExprPullup::is_stmt_may_reduce_row_count(const ObSelectStmt &stmt
return ret;
}
#undef USING_LOG_PREFIX
}
}