Commit 58b95073 authored by Igor Babaev's avatar Igor Babaev

MDEV-17096 Pushdown of simple derived tables to storage engines

Added plugin system variable federated_pushdown.
parent d11be239
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--source have_federatedx.inc
--source include/federated.inc
set global federated_pushdown=1;
connection slave;
DROP TABLE IF EXISTS federated.t1;
......@@ -152,3 +154,5 @@ DROP TABLE federated.t1, federated.t2;
connection default;
source include/federated_cleanup.inc;
set global federated_pushdown=0;
......@@ -19,6 +19,9 @@
static derived_handler*
create_federatedx_derived_handler(THD* thd, TABLE_LIST *derived)
{
if (!use_pushdown)
return 0;
ha_federatedx_derived_handler* handler = NULL;
handlerton *ht= 0;
......@@ -144,6 +147,9 @@ void ha_federatedx_derived_handler::print_error(int, unsigned long)
static select_handler*
create_federatedx_select_handler(THD* thd, SELECT_LEX *sel)
{
if (!use_pushdown)
return 0;
ha_federatedx_select_handler* handler = NULL;
handlerton *ht= 0;
......
......@@ -3677,11 +3677,17 @@ int ha_federatedx::discover_assisted(handlerton *hton, THD* thd,
return error;
}
#include "federatedx_pushdown.cc"
struct st_mysql_storage_engine federatedx_storage_engine=
{ MYSQL_HANDLERTON_INTERFACE_VERSION };
my_bool use_pushdown;
static MYSQL_SYSVAR_BOOL(pushdown, use_pushdown, 0,
"Use query fragments pushdown capabilities", NULL, NULL, FALSE);
static struct st_mysql_sys_var* sysvars[]= { MYSQL_SYSVAR(pushdown) };
#include "federatedx_pushdown.cc"
maria_declare_plugin(federatedx)
{
MYSQL_STORAGE_ENGINE_PLUGIN,
......@@ -3694,7 +3700,7 @@ maria_declare_plugin(federatedx)
federatedx_done, /* Plugin Deinit */
0x0201 /* 2.1 */,
NULL, /* status variables */
NULL, /* system variables */
sysvars, /* system variables */
"2.1", /* string version */
MariaDB_PLUGIN_MATURITY_STABLE /* maturity */
}
......
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