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bef30f2e30
-- innodb-wl5522-debug-zip (path differences win/unix) -- innodb_defragment_fill_factor (stabilise) -- innodb_force_pk (case difference win/unix)
77 lines
2.7 KiB
Plaintext
77 lines
2.7 KiB
Plaintext
DROP TABLE if exists t1;
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DROP TABLE if exists t2;
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Testing tables with large records
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CREATE TABLE t1 (a INT NOT NULL PRIMARY KEY AUTO_INCREMENT, b VARCHAR(256), KEY SECOND(a, b)) ENGINE=INNODB;
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INSERT INTO t1 VALUES (1, REPEAT('A', 256));
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INSERT INTO t1 (b) SELECT b from t1;
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INSERT INTO t1 (b) SELECT b from t1;
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INSERT INTO t1 (b) SELECT b from t1;
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INSERT INTO t1 (b) SELECT b from t1;
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INSERT INTO t1 (b) SELECT b from t1;
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INSERT INTO t1 (b) SELECT b from t1;
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INSERT INTO t1 (b) SELECT b from t1;
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INSERT INTO t1 (b) SELECT b from t1;
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INSERT INTO t1 (b) SELECT b from t1;
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INSERT INTO t1 (b) SELECT b from t1;
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optimize table t1;
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Table Op Msg_type Msg_text
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test.t1 optimize status OK
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select sleep(1);
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sleep(1)
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0
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select count(*) from t1;
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count(*)
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927
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select count(*) from t1 force index (second);
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count(*)
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927
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# A few more insertions on the page should not cause a page split.
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insert into t1 values (81, REPEAT('A', 256));
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insert into t1 values (83, REPEAT('A', 256));
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insert into t1 values (87, REPEAT('A', 256));
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insert into t1 values (82, REPEAT('A', 256));
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insert into t1 values (86, REPEAT('A', 256));
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# More insertions will cause page splits
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insert into t1 values (88, REPEAT('A', 256));
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insert into t1 values (85, REPEAT('A', 256));
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insert into t1 values (84, REPEAT('A', 256));
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DROP TABLE t1;
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Testing table with small records
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CREATE TABLE t2 (a INT NOT NULL PRIMARY KEY AUTO_INCREMENT, b VARchar(16), KEY SECOND(a,b)) ENGINE=INNODB;
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optimize table t2;
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Table Op Msg_type Msg_text
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test.t2 optimize status OK
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select sleep(1);
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sleep(1)
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0
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select count(*) from t2 force index(second);
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count(*)
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3701
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The page should have room for about 20 insertions
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insert into t2 values(1181, REPEAT('A', 16));
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insert into t2 values(1191, REPEAT('A', 16));
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insert into t2 values(1182, REPEAT('A', 16));
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insert into t2 values(1192, REPEAT('A', 16));
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insert into t2 values(1183, REPEAT('A', 16));
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insert into t2 values(1193, REPEAT('A', 16));
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insert into t2 values(1184, REPEAT('A', 16));
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insert into t2 values(1194, REPEAT('A', 16));
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insert into t2 values(1185, REPEAT('A', 16));
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insert into t2 values(1195, REPEAT('A', 16));
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insert into t2 values(1186, REPEAT('A', 16));
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insert into t2 values(1196, REPEAT('A', 16));
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insert into t2 values(1187, REPEAT('A', 16));
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insert into t2 values(1197, REPEAT('A', 16));
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insert into t2 values(1188, REPEAT('A', 16));
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insert into t2 values(1198, REPEAT('A', 16));
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insert into t2 values(1189, REPEAT('A', 16));
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insert into t2 values(1199, REPEAT('A', 16));
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insert into t2 values(1190, REPEAT('A', 16));
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insert into t2 values(1180, REPEAT('A', 16));
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More insertions will cause page split.
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insert into t2 values(1280, REPEAT('A', 16));
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insert into t2 values(1290, REPEAT('A', 16));
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insert into t2 values(1281, REPEAT('A', 16));
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insert into t2 values(1291, REPEAT('A', 16));
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DROP TABLE t2;
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