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feat: add the rule to use-das when has variable assignments in sql

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Co-authored-by: leslieyuchen <leslieyuchen@gmail.com>
This commit is contained in:
obdev
2023-10-23 09:14:02 +00:00
committed by ob-robot
parent a46ee110fb
commit bacc417957
23 changed files with 170 additions and 18 deletions
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12
src/sql/optimizer/ob_join_order.cpp
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@ -1509,6 +1509,16 @@ int ObJoinOrder::will_use_das(const uint64_t table_id,
}
}
bool enable_var_assign_use_das = true;
if (OB_SUCC(ret)) {
ObSQLSessionInfo *session_info = NULL;
if (OB_NOT_NULL(session_info = get_plan()->get_optimizer_context().get_session_info())) {
enable_var_assign_use_das = session_info->is_var_assign_use_das_enabled();
} else {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("session info is null", K(ret));
}
}
if(OB_SUCC(ret)) {
bool hint_force_das = false;
bool hint_force_no_das = false;
@ -1518,7 +1528,7 @@ int ObJoinOrder::will_use_das(const uint64_t table_id,
get_plan()->get_optimizer_context().has_dblink() ||
get_plan()->get_optimizer_context().has_subquery_in_function_table() ||
get_plan()->get_optimizer_context().has_cursor_expression() ||
get_plan()->get_optimizer_context().has_var_assign() ||
(get_plan()->get_optimizer_context().has_var_assign() && enable_var_assign_use_das) ||
is_batch_update_table;
if (EXTERNAL_TABLE == table_item->table_type_) {
create_das_path = false;