Remove table prefixes MySQL

remove-table-prefixes.sql

# Set @database, @old_prefix and @new_prefix (if you want a different prefix instead of removing)
# Execute the Generated SQL Query this generates to rename all tables found with prefix.

SET SESSION group_concat_max_len = 999999999;
SET @database   = "databasename";
SET @old_prefix = "mgn_"; 
SET @new_prefix = "";
 
SELECT GROUP_CONCAT("RENAME TABLE ", TABLE_NAME, " TO ", replace(TABLE_NAME, @old_prefix, @new_prefix),'; ' separator '') 
  FROM information_schema.TABLES WHERE TABLE_SCHEMA = @database AND TABLE_NAME LIKE CONCAT(@old_prefix, '%');