mysql delete table with specified prefix

Delete the specified prefix table in batches:

 

Select CONCAT( 'drop table ', table_name, ';' )
FROM information_schema.tables
Where table_name LIKE 'dede_%';

  

　　"dede" is the prefix of the table to be deleted. After executing this SQL statement, a series of SQL statements will be generated, and the generated SQL statements must be executed to actually execute the delete operation.

 

Arranged into a SQL statement, the result can be directly executed:

 

select group_concat(m separator ';') from (Select CONCAT( 'drop table ', table_name, '' ) m
FROM information_schema.tables
Where table_name LIKE 'ytt_%') a

 

 

The other is to batch modify the table name :

 

Select CONCAT( 'ALTER TABLE ', table_name, 'RENAME TO ', table_name,';' )
FROM information_schema.tables
Where table_name LIKE 'dede_%';

 

 

　　First execute this SQL statement, the following statement will be generated:

 

ALTER TABLE de_aaa RENAME TO de_aaa; 

ALTER TABLE de_bbb RENAME TO de_bbb;

　　In the editor, change "RENAME TO de" to the table prefix you want to set in batches, and then execute this SQL statement to modify the table names in batches.