index_merge_innodb did sometimes give wrong results

Fixed by adding more rows to a table

Other things:
- Speed up index_merge tests 20% by adding begin/commit around loops that
  generated rows.

mysql-test/include/index_merge1.inc

@@ -37,12 +37,14 @@ insert into t0 values (1),(2),(3),(4),(5),(6),(7),(8);
 
 let $1=7;
 set @d=8;
+begin;
 while ($1)
 {
   eval insert into t0 select key1+@d from t0;
   eval set @d=@d*2;
   dec $1;
 }
+commit;
 --enable_query_log
 
 alter table t0 add key2 int not null, add index i2(key2);
@@ -365,6 +367,7 @@ INSERT INTO t1 VALUES ('foo','bar', 'ZZ'),('fuz','baz', 'ZZ');
 
 --disable_query_log
 let $1=9;
+begin;
 while ($1)
 {
   eval INSERT INTO t1 SELECT * from t1 WHERE cola = 'foo';
@@ -377,6 +380,7 @@ while ($1)
   eval INSERT INTO t1 SELECT * from t1 WHERE cola <> 'foo';
   dec $1;
 }
+commit;
 
 --enable_query_log
 

mysql-test/include/index_merge2.inc

@@ -34,11 +34,13 @@ create table t1
 
 --disable_query_log
 let $1=200;
+begin;
 while ($1)
 {
   eval insert into t1 values (200-$1, $1);
   dec $1;
 }
+commit;
 --enable_query_log
 
 # No primary key
@@ -80,11 +82,13 @@ create table t1 (
 show warnings;
 --disable_query_log
 let $1=30;
+begin;
 while ($1)
 {
   eval insert into t1 (key1, key2, filler) values ($1/4, $1/8, 'filler-data');
   dec $1;
 }
+commit;
 --enable_query_log
 explain select pk from t1 where key1 = 1 and key2 = 1;
 select pk from t1 where key2 = 1 and key1 = 1;
@@ -331,16 +335,20 @@ insert into t1(key1) values (1),(2),(3),(4),(5),(6),(7),(8);
 
 let $1=7;
 set @d=8;
+begin;
 while ($1)
 {
   eval insert into t1 (key1) select key1+@d from t1;
   eval set @d=@d*2;
   dec $1;
 }
+commit;
 
 alter table t1 add index i2(key2);
 alter table t1 add index i3(key3);
 update t1 set key2=key1,key3=key1;
+
+insert into t1 select 10000+key1, 10000+key2,10000+key3 from t1;
 analyze table t1;
 
 # to test the bug, the following must use "sort_union":

mysql-test/include/index_merge_2sweeps.inc

@@ -32,12 +32,14 @@ create table t1 (
 
 
 --disable_query_log
+begin;
 let $1=1000;
 while ($1)
 {
   eval insert into t1 values($1, $1, $1, 'filler-data','filler-data-2');
   dec $1;
 }
+commit;
 --enable_query_log
 
 select * from t1 where (key1 >= 2 and key1 <= 10) or (pk >= 4 and pk <=8 );

mysql-test/include/index_merge_ror.inc

@@ -67,18 +67,21 @@ create table t1
 create table t0 as select * from t1;
 --disable_query_log
 --echo # Printing of many insert into t0 values (....) disabled.
+begin;
 let $cnt=1000;
 while ($cnt)
 {
   eval insert into t0 values (1, 2, 3, 1, 2, 3, 0, 0, 0, 0, 'data1', 'data2', 'data3', 'data4', 'data5', 'data6');
   dec $cnt;
 }
+commit;
 --enable_query_log
 
 alter table t1 disable keys;
 --disable_query_log
 --echo # Printing of many insert into t1 select .... from t0 disabled.
 let $1=4;
+begin;
 while ($1)
 {
   let $2=4;
@@ -94,6 +97,7 @@ while ($1)
   }
  dec $1;
 }
+commit;
 
 --echo # Printing of many insert into t1 (...) values (....) disabled.
 # Row retrieval tests
@@ -101,6 +105,7 @@ while ($1)
 # insert enough rows for index intersection to be used for (key1,key2)
 insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 100, 100,'key1-key2-key3-key4');
 let $cnt=400;
+begin;
 while ($cnt)
 {
   eval insert into t1 (key1, key2, key3, key4, filler1) values (100, -1, 100, -1,'key1-key3');
@@ -112,6 +117,7 @@ while ($cnt)
   eval insert into t1 (key1, key2, key3, key4, filler1) values (-1, 100, -1, 100,'key2-key4');
   dec $cnt;
 }
+commit;
 --enable_query_log
 alter table t1 enable keys;
 select count(*) from t1;
@@ -249,6 +255,7 @@ create table t2 (
 
 --disable_query_log
 let $1=8;
+begin;
 while ($1)
 {
   eval insert into t2 values (repeat(char($1+64), 8),repeat(char($1+64), 8),'filler1', 'filler2');
@@ -256,6 +263,7 @@ while ($1)
 }
 insert into t2 select * from t2;
 insert into t2 select * from t2;
+commit;
 --enable_query_log
 
 # The table row buffer is reused. Fill it with rows that don't match.

mysql-test/include/index_merge_ror_cpk.inc

@@ -56,14 +56,14 @@ create table t1
 );
 
 --disable_query_log
-set autocommit=0;
+begin;
 let $1=10000;
 while ($1)
 {
   eval insert into t1 values ($1 div 10,$1 mod 100,   $1/100,$1/100,   $1/100,$1/100,$1/100,$1/100,$1/100, $1 mod 100, $1/1000,'filler-data-$1','filler2');
   dec $1;
 }
-set autocommit=1;
+commit;
 --enable_query_log
 
 # Verify that range scan on CPK is ROR

mysql-test/main/index_merge_innodb.result

@@ -296,6 +296,7 @@ key3 int not null default 0
 );
 insert into t1(key1) values (1),(2),(3),(4),(5),(6),(7),(8);
 set @d=8;
+begin;
 insert into t1 (key1) select key1+@d from t1;
 set @d=@d*2;
 insert into t1 (key1) select key1+@d from t1;
@@ -310,9 +311,11 @@ insert into t1 (key1) select key1+@d from t1;
 set @d=@d*2;
 insert into t1 (key1) select key1+@d from t1;
 set @d=@d*2;
+commit;
 alter table t1 add index i2(key2);
 alter table t1 add index i3(key3);
 update t1 set key2=key1,key3=key1;
+insert into t1 select 10000+key1, 10000+key2,10000+key3 from t1;
 analyze table t1;
 Table	Op	Msg_type	Msg_text
 test.t1	analyze	status	Engine-independent statistics collected
@@ -675,6 +678,7 @@ a int,
 b int,
 INDEX idx(a))
 ENGINE=INNODB;
+begin;
 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),
@@ -694,6 +698,7 @@ 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);
+commit;
 SET SESSION sort_buffer_size = 1024*36;
 set @tmp_optimizer_switch=@@optimizer_switch;
 set optimizer_switch='derived_merge=off,derived_with_keys=off';

mysql-test/main/index_merge_innodb.test

@@ -47,6 +47,7 @@ CREATE TABLE t1 (
   INDEX idx(a))
 ENGINE=INNODB;
 
+begin;
 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),
@@ -66,6 +67,7 @@ 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);
+commit;
 
 SET SESSION sort_buffer_size = 1024*36;
 set @tmp_optimizer_switch=@@optimizer_switch;

mysql-test/main/index_merge_myisam.result

@@ -1135,6 +1135,7 @@ key3 int not null default 0
 );
 insert into t1(key1) values (1),(2),(3),(4),(5),(6),(7),(8);
 set @d=8;
+begin;
 insert into t1 (key1) select key1+@d from t1;
 set @d=@d*2;
 insert into t1 (key1) select key1+@d from t1;
@@ -1149,9 +1150,11 @@ insert into t1 (key1) select key1+@d from t1;
 set @d=@d*2;
 insert into t1 (key1) select key1+@d from t1;
 set @d=@d*2;
+commit;
 alter table t1 add index i2(key2);
 alter table t1 add index i3(key3);
 update t1 set key2=key1,key3=key1;
+insert into t1 select 10000+key1, 10000+key2,10000+key3 from t1;
 analyze table t1;
 Table	Op	Msg_type	Msg_text
 test.t1	analyze	status	Engine-independent statistics collected