MySQL 数据字典导出

命令：

SELECT
    TABLE_SCHEMA AS '数据库',
    TABLE_NAME AS '表名',
    COLUMN_NAME AS '字段名',
    COLUMN_TYPE AS '字段类型',
    COLUMN_COMMENT AS '字段解释'
FROM
    information_schema. COLUMNS
WHERE
    TABLE_SCHEMA not in ('information_schema','performance_schema','mysql','sys');