…()),’-',sha1(rand()),’-',sha1(rand()),’-',sha1(rand())); and added key on column C: alter table sbtest add key c(c); The box I’m using for…. I used 10mil row table which would look as following in terms of data and index size: mysql> show table status like “sbtest…: If you’re having large tables and need to run ALTER TABLE which rebuilds the table or OPTIMIZE TABLE do not forget to enable expand…

…simple ALTER TABLE such as: “alter table sbtest add z int not null;” which I expected would create table with primary key …… and indeed it does. mysql> select * from innodb_sys_tables where table_id=18; +———-+——–+————–+——+——–+——-+ | TABLE_ID | SCHEMA | NAME | FLAG …

… (23000): Cannot add or update a child row: a foreign key constraint fails (`test`.`child`, CONSTRAINT `child_ibfk_1` FOREIGN KEY (`parent_id… proper type and indexed): mysql> set foreign_key_checks=0; Query OK, 0 rows affected (0.00 sec) mysql> alter table parent rename parentx; Query…

…ALTER TABLE statements? Yes. This is exactly how it is done in many cases. There is really no gain in dumping table…. Q: What are the key concerns upgrading MySQL 4.1 to MySQL 5.5? This is jumping … packages (most typically used in production) which adds the difference compared to your production use….