mariadb/storage/spider/spd_select_handler.h
Yuchen Pei b7846a92db
MDEV-27260 [wip] beelining a spider select handler poc
Works for the following simple case

--disable_query_log
--disable_result_log
--source ../../t/test_init.inc
--enable_result_log
--enable_query_log
set spider_same_server_link= 1;
set spider_disable_select_handler= 0;
evalp CREATE SERVER srv FOREIGN DATA WRAPPER mysql
OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
create table t2 (c int);
create table t1 (c int) ENGINE=Spider
COMMENT='WRAPPER "mysql", srv "srv",TABLE "t2"';
insert into t1 values (1), (2), (3);
select c from t1;
drop table t1, t2;
drop server srv;
--disable_query_log
--disable_result_log
--source ../../t/test_deinit.inc
--enable_result_log
--enable_query_log
2025-07-01 11:27:23 +10:00

12 lines
349 B
C++

class spider_select_handler: public select_handler
{
spider_fields *fields;
public:
spider_select_handler(THD *, SELECT_LEX *, spider_fields *);
~spider_select_handler();
int init_scan() override;
int next_row() override;
int end_scan() override;
};
select_handler *spider_create_select_handler(THD *, SELECT_LEX *, SELECT_LEX_UNIT *);