mysql 生成数据字典

SELECT
  a.TABLE_NAME AS '表名',
  b.TABLE_COMMENT AS '表备注',
  a.COLUMN_NAME AS '字段名',
  a.COLUMN_TYPE AS '数据类型',
  a.IS_NULLABLE AS '是否可空',
IF
  ( a.COLUMN_DEFAULT = '', '空字符串', IFNULL( a.COLUMN_DEFAULT, '无' ) ) AS '默认值',
  a.COLUMN_COMMENT AS '字段备注'
FROM
  information_schema.COLUMNS AS a
  JOIN information_schema.TABLES AS b ON a.TABLE_SCHEMA = b.TABLE_SCHEMA 
  AND a.TABLE_NAME = b.TABLE_NAME 
WHERE
  a.TABLE_SCHEMA = 'Database_Name' # 这里修改为数据库名
  # 单表时加上下方条件
  # AND a.TABLE_NAME = 'Table_Name' # 这里修改为表名
————————————————