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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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142
src/sql/resolver/expr/ob_expr_relation_analyzer.cpp
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@ -20,66 +20,38 @@ namespace oceanbase
using namespace common;
namespace sql
{
ObExprRelationAnalyzer::ObExprRelationAnalyzer() : query_exprs_()
ObExprRelationAnalyzer::ObExprRelationAnalyzer()
{
}
/**
* @brief ObExprRelationAnalyzer::pull_expr_relation_id_and_levels
* 假定以下表达式是第 i 层的表达式
* ObQueryRefRawExpr:
expr levels: 该子查询引用到的 ObExecParamRawExpr 的 expr level
relation ids: 该子查询引用的所有第 i 层列的 relation id 集合
* ObColumnRefRawExpr:
expr levels: 仅包含 i
relation ids: 对应表的 relation bit index
* ObSetOpRawExpr
expr levels: 仅包含 i
relation ids: 空
* ObAggRawExpr
expr levels: 仅包含 i
relation ids: 该表达式引用的所有第 i 层列的 relation id 集合
* Others
expr levels: 该表达式引用到的所有列的 expr level
relation ids: 该表达式引用的所有第 i 层列的 relation id 集合
* relation ids: the bit index of the table item that the column belongs to
* Other Exprs:
* relation ids: the union of all param columns exprs' relation ids
* @return
*/
int ObExprRelationAnalyzer::pull_expr_relation_id_and_levels(ObRawExpr *expr,
int32_t cur_stmt_level)
int ObExprRelationAnalyzer::pull_expr_relation_id(ObRawExpr *expr)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("expr is null", K(ret), K(expr));
} else if (OB_FAIL(visit_expr(*expr, cur_stmt_level))) {
} else if (OB_FAIL(visit_expr(*expr))) {
LOG_WARN("failed to pull expr relation id and levels", K(ret));
}
return ret;
}
int ObExprRelationAnalyzer::visit_expr(ObRawExpr &expr, int32_t stmt_level)
int ObExprRelationAnalyzer::visit_expr(ObRawExpr &expr)
{
int ret = OB_SUCCESS;
if (OB_FAIL(init_expr_info(expr))) {
LOG_WARN("failed into init expr level and relation ids", K(ret));
} else if (expr.is_query_ref_expr()) {
ObQueryRefRawExpr &query = static_cast<ObQueryRefRawExpr &>(expr);
if (!query.has_nl_param()) {
// do not rebuild exec param array if the subquery contains nlparams.
query.get_exec_params().reset();
}
if (OB_FAIL(query_exprs_.push_back(&query))) {
LOG_WARN("failed to push back query ref", K(ret));
} else if (OB_FAIL(visit_stmt(query.get_ref_stmt()))) {
LOG_WARN("failed to visit subquery stmt", K(ret));
} else if (OB_UNLIKELY(query_exprs_.empty())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("query expr stack is invalid", K(ret), K(query));
} else {
query_exprs_.pop_back();
}
}
int64_t param_count = expr.has_flag(IS_ONETIME) ? 1 : expr.get_param_count();
if (!expr.is_column_ref_expr() &&
T_ORA_ROWSCN != expr.get_expr_type()) {
expr.get_relation_ids().reuse();
}
// not sure whether we should visit onetime exec param
for (int64_t i = 0; OB_SUCC(ret) && i < param_count; ++i) {
ObRawExpr *param = expr.has_flag(IS_ONETIME) ?
@ -88,12 +60,8 @@ int ObExprRelationAnalyzer::visit_expr(ObRawExpr &expr, int32_t stmt_level)
if (OB_ISNULL(param)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("param expr is null", K(ret), K(param), K(i), K(expr));
} else if (OB_FAIL(SMART_CALL(visit_expr(*param, stmt_level)))) {
} else if (OB_FAIL(SMART_CALL(visit_expr(*param)))) {
LOG_WARN("failed to visit param", K(ret));
} else if (OB_FAIL(expr.get_expr_levels().add_members(param->get_expr_levels()))) {
LOG_WARN("failed to add expr levels", K(ret));
} else if (!param->get_expr_levels().has_member(stmt_level)) {
// skip
} else if (OB_FAIL(expr.get_relation_ids().add_members(param->get_relation_ids()))) {
LOG_WARN("failed to add relation ids", K(ret));
}
@ -101,91 +69,5 @@ int ObExprRelationAnalyzer::visit_expr(ObRawExpr &expr, int32_t stmt_level)
return ret;
}
int ObExprRelationAnalyzer::init_expr_info(ObRawExpr &expr)
{
int ret = OB_SUCCESS;
expr.get_expr_levels().reuse();
if (!expr.is_column_ref_expr() &&
T_ORA_ROWSCN != expr.get_expr_type()) {
expr.get_relation_ids().reuse();
}
if (expr.is_column_ref_expr() || expr.is_aggr_expr() || expr.is_set_op_expr() ||
expr.is_win_func_expr() || expr.is_exec_param_expr() ||
T_ORA_ROWSCN == expr.get_expr_type()) {
int32_t expr_level = expr.get_expr_level();
if (OB_UNLIKELY(expr_level >= OB_MAX_SUBQUERY_LAYER_NUM || expr_level < 0)) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("the subquery nested layers is out of range", K(ret), K(expr_level));
} else if (OB_FAIL(expr.get_expr_levels().add_member(expr_level))) {
LOG_WARN("failed to add expr level", K(ret));
} else if (expr.is_exec_param_expr() && !expr.has_flag(IS_ONETIME)) {
for (int64_t i = 0; OB_SUCC(ret) && i < query_exprs_.count(); ++i) {
if (OB_FAIL(query_exprs_.at(i)->get_expr_levels().add_member(expr.get_expr_level()))) {
LOG_WARN("failed to add expr level", K(ret));
} else if (query_exprs_.at(i)->has_nl_param()) {
// does not rebuild exec param for the subquery expr
} else if (expr.get_expr_level() == query_exprs_.at(i)->get_expr_level()) {
bool found = false;
for (int64_t j = 0; j < query_exprs_.at(i)->get_exec_params().count(); ++j) {
if (query_exprs_.at(i)->get_exec_param(j) == &expr) {
found = true;
break;
}
}
if (!found && OB_FAIL(query_exprs_.at(i)->add_exec_param_expr(
static_cast<ObExecParamRawExpr *>(&expr)))) {
LOG_WARN("failed to add exec param expr", K(ret));
}
}
}
}
}
return ret;
}
int ObExprRelationAnalyzer::visit_stmt(ObDMLStmt *stmt)
{
int ret = OB_SUCCESS;
ObSEArray<ObRawExpr *, 8> relation_exprs;
if (OB_ISNULL(stmt)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt is null", K(ret), K(stmt));
} else if (OB_FAIL(stmt->get_relation_exprs(relation_exprs))) {
LOG_WARN("failed to get relation exprs", K(ret));
} else {
for (int64_t i = 0; OB_SUCC(ret) && i < relation_exprs.count(); ++i) {
ObRawExpr *expr = NULL;
if (OB_ISNULL(expr = relation_exprs.at(i))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("relation expr is null", K(ret), K(expr));
} else if (OB_FAIL(visit_expr(*expr, stmt->get_current_level()))) {
LOG_WARN("failed to visit expr", K(ret));
} else if (OB_FAIL(expr->extract_info())) {
LOG_WARN("failed to extract expr info");
}
}
if (OB_SUCC(ret) && stmt->is_select_stmt()) {
ObIArray<ObSelectStmt*> &child_stmts = static_cast<ObSelectStmt*>(stmt)->get_set_query();
for (int64_t i = 0; OB_SUCC(ret) && i < child_stmts.count(); ++i) {
if (OB_FAIL(SMART_CALL(visit_stmt(child_stmts.at(i))))) {
LOG_WARN("failed to visit stmt", K(ret));
}
}
}
for (int64_t i = 0; OB_SUCC(ret) && i < stmt->get_table_size(); ++i) {
TableItem *table = NULL;
if (OB_ISNULL(table = stmt->get_table_item(i))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("table item is null", K(ret), K(table));
} else if (!table->is_generated_table()) {
// skip
} else if (OB_FAIL(SMART_CALL(visit_stmt(table->ref_query_)))) {
LOG_WARN("failed to visit generated table", K(ret));
}
}
}
return ret;
}
} // namespace sql
} // namespace oceanbase