database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-29 05:21:33 +03:00
Code Activity

Merge 10.3 into 10.4

Browse Source
This commit is contained in:
Marko Mäkelä
2021-03-27 17:12:28 +02:00
parent d1ff2c583f 3157fa182a
commit 7ae37ff74f
54 changed files with 701 additions and 624 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
sql/sql_select.cc
View File

@ -300,6 +300,8 @@ void set_postjoin_aggr_write_func(JOIN_TAB *tab);
static Item **get_sargable_cond(JOIN *join, TABLE *table);
bool is_eq_cond_injected_for_split_opt(Item_func_eq *eq_item);
#ifndef DBUG_OFF
/*
@ -22493,6 +22495,21 @@ make_cond_for_table_from_pred(THD *thd, Item *root_cond, Item *cond,
cond->marker=3; // Checked when read
return (COND*) 0;
}
/*
If cond is an equality injected for split optimization then
a. when retain_ref_cond == false : cond is removed unconditionally
(cond that supports ref access is removed by the preceding code)
b. when retain_ref_cond == true : cond is removed if it does not
support ref access
*/
if (left_item->type() == Item::FIELD_ITEM &&
is_eq_cond_injected_for_split_opt((Item_func_eq *) cond) &&
(!retain_ref_cond ||
!test_if_ref(root_cond, (Item_field*) left_item,right_item)))
{
cond->marker=3;
return (COND*) 0;
}
}
cond->marker=2;
cond->set_join_tab_idx(join_tab_idx_arg);