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add for insert values statement split&rewrite batch optimization

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This commit is contained in:
yishenglanlingzui
2023-08-14 15:12:40 +00:00
committed by ob-robot
parent 15934d24ac
commit 9b3f07d4ad
37 changed files with 1653 additions and 290 deletions
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23
src/observer/mysql/obmp_query.cpp
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@ -235,39 +235,16 @@ int ObMPQuery::process()
}
}
bool enable_batch_opt = session.is_enable_batched_multi_statement();;
if (OB_FAIL(ret)) {
//do nothing
} else if (OB_FAIL(parser.split_multiple_stmt(sql_, queries, parse_stat))) {
// 进入本分支，说明push_back出错，OOM，委托外层代码返回错误码
// 且进入此分支之后，要断连接
need_response_error = true;
} else if (enable_batch_opt &&
OB_FAIL(parser.reconstruct_insert_sql(sql_, queries, ins_queries, do_ins_batch_opt))) {
LOG_WARN("fail to reconstruct", K(ret), K(sql_));
} else if (OB_UNLIKELY(queries.count() <= 0)) {
ret = OB_ERR_UNEXPECTED;
need_response_error = true;//进入此分支之后，要断连接，极其严重错误
LOG_ERROR("emtpy query count. client would have suspended. never be here!", K_(sql), K(ret));
} else if (do_ins_batch_opt) {
bool optimization_done = false;
if (OB_FAIL(try_batched_multi_stmt_optimization(session,
ins_queries,
parse_stat,
optimization_done,
async_resp_used,
need_disconnect,
true))) {
LOG_WARN("fail to try batch", K(ret));
} else if (!optimization_done) {
// 如果 batch执行失败，那么还是回退成原本的单条执行
ret = process_single_stmt(ObMultiStmtItem(false, 0, sql_),
session,
has_more,
force_sync_resp,
async_resp_used,
need_disconnect);
}
} else if (OB_UNLIKELY(1 == session.get_capability().cap_flags_.OB_CLIENT_MULTI_STATEMENTS)) {
// 处理Multiple Statement
/* MySQL处理Multi-Stmt出错时候的行为：