mysql - 散列 MySQL 数据库架构

Question

我想对 MySQL 数据库模式（没有数据）进行哈希/签名，以便对其进行校验和，以确保它不会被其他人修改。

我怎样才能实现它？

Answer 1

据我了解您的问题，您需要表格校验和：

checksum table `table`

所以，我猜只是做一个空表的校验和

Answer 2

SELECT HEX( CRC32 ( SUM( CRC32( CONCAT(
   COALESCE(TABLE_NAME,''),
   COALESCE(COLUMN_NAME,''),
   COALESCE(ORDINAL_POSITION,''),
   COALESCE(COLUMN_DEFAULT,''),
   COALESCE(IS_NULLABLE,''),
   COALESCE(DATA_TYPE,''),
   COALESCE(CHARACTER_MAXIMUM_LENGTH,''),
   COALESCE(CHARACTER_OCTET_LENGTH,''),
   COALESCE(NUMERIC_PRECISION,''),
   COALESCE(NUMERIC_SCALE,''),
   COALESCE(CHARACTER_SET_NAME,''),
   COALESCE(COLLATION_NAME,''),
   COALESCE(COLLATION_NAME,''),
   COALESCE(COLUMN_TYPE,''),
   COALESCE(COLUMN_KEY,'')
  ) ) ) ) ) AS 'hash'
FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = 'database_name';