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
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原文链接：https://blog.csdn.net/maxsky/article/details/85131950