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bd8f81f470
SHOW CREATE TABLE fails Underlying table names, that merge engine fails to open were not reported. With this fix CHECK TABLE issued against merge table reports all underlying table names that it fails to open. Other statements are unaffected, that is underlying table names are not included into error message. This fix doesn't solve SHOW CREATE TABLE issue.
170 lines
3.8 KiB
Plaintext
170 lines
3.8 KiB
Plaintext
drop table if exists t1, t2;
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create table t1 (
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a int not null auto_increment,
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b char(16) not null,
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primary key (a),
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key (b)
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);
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create table t2(
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a int not null auto_increment,
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b char(16) not null,
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primary key (a),
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key (b)
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);
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insert into t1(b) values
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('test0'),
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('test1'),
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('test2'),
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('test3'),
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('test4'),
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('test5'),
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('test6'),
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('test7');
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insert into t2(b) select b from t1;
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insert into t1(b) select b from t2;
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insert into t2(b) select b from t1;
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insert into t1(b) select b from t2;
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insert into t2(b) select b from t1;
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insert into t1(b) select b from t2;
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insert into t2(b) select b from t1;
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insert into t1(b) select b from t2;
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insert into t2(b) select b from t1;
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insert into t1(b) select b from t2;
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insert into t2(b) select b from t1;
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insert into t1(b) select b from t2;
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insert into t2(b) select b from t1;
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insert into t1(b) select b from t2;
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insert into t2(b) select b from t1;
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insert into t1(b) select b from t2;
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insert into t2(b) select b from t1;
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insert into t1(b) select b from t2;
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select count(*) from t1;
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count(*)
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33448
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select count(*) from t2;
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count(*)
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20672
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flush tables;
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flush status;
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 0
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Key_reads 0
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select count(*) from t1 where b = 'test1';
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count(*)
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4181
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 294
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Key_reads 60
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select count(*) from t1 where b = 'test1';
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count(*)
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4181
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 588
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Key_reads 60
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flush tables;
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flush status;
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select @@preload_buffer_size;
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@@preload_buffer_size
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32768
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load index into cache t1;
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Table Op Msg_type Msg_text
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test.t1 preload_keys status OK
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 774
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Key_reads 774
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select count(*) from t1 where b = 'test1';
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count(*)
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4181
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 1068
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Key_reads 774
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flush tables;
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flush status;
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 0
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Key_reads 0
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set session preload_buffer_size=256*1024;
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select @@preload_buffer_size;
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@@preload_buffer_size
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262144
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load index into cache t1 ignore leaves;
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Table Op Msg_type Msg_text
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test.t1 preload_keys status OK
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 17
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Key_reads 17
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select count(*) from t1 where b = 'test1';
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count(*)
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4181
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 311
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Key_reads 75
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flush tables;
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flush status;
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 0
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Key_reads 0
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set session preload_buffer_size=1*1024;
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select @@preload_buffer_size;
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@@preload_buffer_size
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1024
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load index into cache t1, t2 key (primary,b) ignore leaves;
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Table Op Msg_type Msg_text
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test.t1 preload_keys status OK
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test.t2 preload_keys status OK
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 785
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Key_reads 785
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select count(*) from t1 where b = 'test1';
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count(*)
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4181
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select count(*) from t2 where b = 'test1';
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count(*)
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2584
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 1266
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Key_reads 821
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flush tables;
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flush status;
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 0
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Key_reads 0
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load index into cache t3, t2 key (primary,b) ;
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Table Op Msg_type Msg_text
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test.t3 preload_keys Error Table 'test.t3' doesn't exist
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test.t3 preload_keys error Corrupt
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test.t2 preload_keys status OK
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 478
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Key_reads 478
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flush tables;
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flush status;
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 0
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Key_reads 0
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load index into cache t3 key (b), t2 key (c) ;
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Table Op Msg_type Msg_text
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test.t3 preload_keys Error Table 'test.t3' doesn't exist
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test.t3 preload_keys error Corrupt
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test.t2 preload_keys Error Key 'c' doesn't exist in table 't2'
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test.t2 preload_keys status Operation failed
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show status like "key_read%";
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Variable_name Value
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Key_read_requests 0
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Key_reads 0
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drop table t1, t2;
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