mariadb/mysql-test/t/index_merge_innodb.test

# t/index_merge_innodb.test
#
# Index merge tests
#
# Last update:
# 2006-08-07 ML test refactored (MySQL 5.1)
#               Main code of several index_merge tests
#                            -> include/index_merge*.inc
#               wrapper t/index_merge_innodb.test sources now several 
#               include/index_merge*.inc files
#

# Slow test, don't run during staging part
--source include/not_staging.inc
--source include/have_innodb.inc

let $engine_type= InnoDB;
# According to Oracle: "InnoDB's estimate for the index cardinality
# depends on a pseudo random number generator (it picks up random
# pages to sample). After an optimization that was made in r2625 two
# EXPLAINs started returning a different number of rows (3 instead of
# 4)", so:
let $index_merge_random_rows_in_EXPLAIN = 1;
# InnoDB does not support Merge tables (affects include/index_merge1.inc)
let $merge_table_support= 0;

# -- [DISABLED Bug#45727]
# --source include/index_merge1.inc
# --source include/index_merge_ror.inc
# --source include/index_merge2.inc

--source include/index_merge_2sweeps.inc
--source include/index_merge_ror_cpk.inc

--echo # 
--echo # BUG#56862/640419: Wrong result with sort_union index merge when one
--echo #                   of the merged index scans is the primary key scan
--echo # 

CREATE TABLE t1 (
  pk int NOT NULL AUTO_INCREMENT PRIMARY KEY,
  a int,
  b int,
  INDEX idx(a))
ENGINE=INNODB;

INSERT INTO t1(a,b) VALUES
  (11, 1100), (2, 200), (1, 100), (14, 1400), (5, 500),
  (3, 300), (17, 1700), (4, 400), (12, 1200), (8, 800),
  (6, 600), (18, 1800), (9, 900), (10, 1000), (7, 700),
  (13, 1300), (15, 1500), (19, 1900), (16, 1600), (20, 2000);
INSERT INTO t1(a,b) SELECT a+20, b+2000 FROM t1;
INSERT INTO t1(a,b) SELECT a+40, b+4000 FROM t1;
INSERT INTO t1(a,b) SELECT a+80, b+8000 FROM t1;
INSERT INTO t1(a,b) SELECT a,b FROM t1;
INSERT INTO t1(a,b) SELECT a,b FROM t1;
INSERT INTO t1(a,b) SELECT a,b FROM t1;
INSERT INTO t1(a,b) SELECT a,b FROM t1;
INSERT INTO t1(a,b) SELECT a,b FROM t1;
INSERT INTO t1(a,b) SELECT a,b FROM t1;
INSERT INTO t1(a,b) SELECT a,b FROM t1;
INSERT INTO t1(a,b) SELECT a,b FROM t1;
INSERT INTO t1(a,b) SELECT a,b FROM t1;
INSERT INTO t1(a,b) SELECT a,b FROM t1;
INSERT INTO t1 VALUES (1000000, 0, 0);

SET SESSION sort_buffer_size = 1024*36;

EXPLAIN
SELECT COUNT(*) FROM 
  (SELECT * FROM t1 
     WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
SELECT COUNT(*) FROM 
  (SELECT * FROM t1 
     WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;

--replace_column 9 #
EXPLAIN
SELECT COUNT(*) FROM 
  (SELECT * FROM t1 IGNORE INDEX(idx)
     WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
SELECT COUNT(*) FROM 
  (SELECT * FROM t1 IGNORE INDEX(idx)
     WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;

DROP TABLE t1;