110 lines
4.8 KiB
Plaintext
110 lines
4.8 KiB
Plaintext
include/master-slave.inc
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Warnings:
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Note #### Sending passwords in plain text without SSL/TLS is extremely insecure.
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Note #### Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information.
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[connection master]
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# Create a table with an index
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CREATE TABLE t1 ( i INT , KEY (i));
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INSERT INTO t1 VALUES (2),(3),(5),(7),(11),(13);
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ANALYZE TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 analyze status OK
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include/sync_slave_sql_with_master.inc
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[Connection Slave]
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# Check that the index is on the slave
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SHOW INDEXES FROM t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment Visible Expression
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t1 1 i 1 i A # NULL NULL YES SE_SPECIFIC YES NULL
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[Connection Master]
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# Make the index invisible
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ALTER TABLE t1 ALTER INDEX i INVISIBLE;
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ANALYZE TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 analyze status OK
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include/sync_slave_sql_with_master.inc
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[Connection Slave]
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# Verify that the index is invisible on the slave
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SHOW INDEXES FROM t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment Visible Expression
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t1 1 i 1 i A # NULL NULL YES SE_SPECIFIC NO NULL
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EXPLAIN SELECT * FROM t1 WHERE i=3;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 NULL ALL NULL NULL NULL NULL # # Using where
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`i` AS `i` from `test`.`t1` where (`test`.`t1`.`i` = 3)
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[Connection Master]
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ALTER TABLE t1 ALTER INDEX i VISIBLE;
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ANALYZE TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 analyze status OK
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include/sync_slave_sql_with_master.inc
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[Connection Slave]
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# Verify that the index is visible on the slave
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SHOW INDEXES FROM t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment Visible Expression
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t1 1 i 1 i A # NULL NULL YES SE_SPECIFIC YES NULL
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EXPLAIN SELECT * FROM t1 WHERE i=3;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 NULL ref i i 5 const # # Using index
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`i` AS `i` from `test`.`t1` where (`test`.`t1`.`i` = 3)
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[Connection Master]
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# Create an invisible index on the table
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CREATE UNIQUE INDEX idx ON t1(i) INVISIBLE;
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include/sync_slave_sql_with_master.inc
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[Connection Slave]
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# Verify that the invisible is created on the slave
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SHOW INDEXES FROM t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment Visible Expression
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t1 0 idx 1 i A # NULL NULL YES SE_SPECIFIC NO NULL
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t1 1 i 1 i A # NULL NULL YES SE_SPECIFIC YES NULL
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[Connection Master]
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ALTER TABLE t1 DROP INDEX i, ALTER INDEX idx VISIBLE, ALTER INDEX idx INVISIBLE, ALTER INDEX idx VISIBLE;
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ANALYZE TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 analyze status OK
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include/sync_slave_sql_with_master.inc
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[Connection Slave]
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SHOW INDEXES FROM t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment Visible Expression
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t1 0 idx 1 i A # NULL NULL YES SE_SPECIFIC YES NULL
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[Connection Master]
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# Creation of invisible indexes on MyISAM tables
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CREATE TABLE t2 (i INT, KEY(i) INVISIBLE) ENGINE=MYISAM;
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INSERT INTO t2 VALUES (2),(3),(5),(7),(11);
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include/sync_slave_sql_with_master.inc
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[Connection Slave]
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[Connection Master]
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# Alter the engine and then alter the index
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ALTER TABLE t1 ENGINE = MYISAM;
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ALTER TABLE t1 ALTER INDEX idx INVISIBLE, ALTER INDEX idx VISIBLE;
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ANALYZE TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 analyze status OK
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include/sync_slave_sql_with_master.inc
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[Connection Slave]
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SHOW INDEXES FROM t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment Visible Expression
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t1 0 idx 1 i A # NULL NULL YES BTREE YES NULL
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[Connection Master]
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# Alter the engine and then alter the index
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ALTER TABLE t2 ENGINE=XENGINE;
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ALTER TABLE t2 ALTER INDEX i INVISIBLE, ALTER INDEX i VISIBLE, ALTER INDEX i INVISIBLE;
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ANALYZE TABLE t2;
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Table Op Msg_type Msg_text
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test.t2 analyze status OK
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include/sync_slave_sql_with_master.inc
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[Connection Slave]
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SHOW INDEXES FROM t2;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment Visible Expression
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t2 1 i 1 i A # NULL NULL YES SE_SPECIFIC NO NULL
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[Connection Master]
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# Clean up
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DROP TABLE t1;
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DROP TABLE t2;
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include/sync_slave_sql_with_master.inc
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[Connection Slave]
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SELECT * FROM t1;
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ERROR 42S02: Table 'test.t1' doesn't exist
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include/rpl_end.inc
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