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

This is a full cost-based implementation of the optimization that employs

Browse Source 
splitting technique for equi-joins of materialized derived tables/views/CTEs.
(see mdev-13369 and mdev-13389).
This commit is contained in:
Igor Babaev
2017-12-30 12:29:09 -08:00
parent 7a66e0ab8f
commit 4f0299f8b3
23 changed files with 2511 additions and 600 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
sql/sql_priv.h
View File

@ -227,7 +227,7 @@
#define OPTIMIZER_SWITCH_EXISTS_TO_IN (1ULL << 28)
#define OPTIMIZER_SWITCH_ORDERBY_EQ_PROP (1ULL << 29)
#define OPTIMIZER_SWITCH_COND_PUSHDOWN_FOR_DERIVED (1ULL << 30)
#define OPTIMIZER_SWITCH_SPLIT_GROUPING_DERIVED (1ULL << 31)
#define OPTIMIZER_SWITCH_SPLIT_MATERIALIZED (1ULL << 31)
#define OPTIMIZER_SWITCH_DEFAULT (OPTIMIZER_SWITCH_INDEX_MERGE | \
OPTIMIZER_SWITCH_INDEX_MERGE_UNION | \
@ -254,7 +254,7 @@
OPTIMIZER_SWITCH_EXISTS_TO_IN | \
OPTIMIZER_SWITCH_ORDERBY_EQ_PROP | \
OPTIMIZER_SWITCH_COND_PUSHDOWN_FOR_DERIVED | \
OPTIMIZER_SWITCH_SPLIT_GROUPING_DERIVED)
OPTIMIZER_SWITCH_SPLIT_MATERIALIZED)
/*
Replication uses 8 bytes to store SQL_MODE in the binary log. The day you