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[FEAT MERGE] optimizer statistics gather enhance

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Co-authored-by: Larry955 <1412857955@qq.com>
Co-authored-by: wangt1xiuyi <13547954130@163.com>
This commit is contained in:
obdev
2023-04-28 13:11:58 +00:00
committed by ob-robot
parent 35c1be5aa1
commit 642f1c7d84
130 changed files with 8572 additions and 1563 deletions
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6
src/sql/optimizer/ob_optimizer.cpp
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@ -655,7 +655,7 @@ int ObOptimizer::init_env_info(ObDMLStmt &stmt)
} else if (OB_FAIL(session->is_serial_set_order_forced(force_serial_set_order, lib::is_oracle_mode()))) {
LOG_WARN("fail to get force_serial_set_order", K(ret));
} else if (OB_FAIL(check_force_default_stat())) {
LOG_WARN("failed to check force default stat", K(ret));
LOG_WARN("failed to check force default stat");
} else if (OB_FAIL(calc_link_stmt_count(*target_stmt, link_stmt_count))) {
LOG_WARN("calc link stmt count failed", K(ret));
} else {
@ -1066,6 +1066,10 @@ int ObOptimizer::check_force_default_stat()
is_restore))) {
LOG_WARN("fail to check if tenant is restore", K(session->get_effective_tenant_id()));
} else if (is_restore) {
// 为避免物理恢复阶段系统表恢复过程中，SQL依赖需要恢复的统计信息表，
// 对恢复中租户，仅需获取缺省统计信息即可
ctx_.set_use_default_stat();
} else if (query_ctx->get_global_hint().has_dbms_stats_hint()) {
ctx_.set_use_default_stat();
} else if (OB_FAIL(query_ctx->get_global_hint().opt_params_.get_bool_opt_param(ObOptParamHint::USE_DEFAULT_OPT_STAT,
use_default_opt_stat,