mysql如何查询所有表和字段信息-木庄网络博客

本文摘自PHP中文网，作者coldplay.xixi，侵删。

mysql查询所有表和字段信息的方法：1、根据库名获取所有表的信息【information_schema.`TABLES`】；2、根据库名获取所有的字段信息【ORDINAL_POSITION AS '列的排列顺序'】。

mysql查询所有表和字段信息的方法：

1、根据库名获取所有表的信息

SELECT
    *
FROM
    information_schema.`TABLES`
WHERE
    TABLE_SCHEMA = 'erp';

2、根据库名获取所有表名称和表说明

SELECT
    TABLE_NAME,
    TABLE_COMMENT
FROM
    information_schema.`TABLES`
WHERE
    TABLE_SCHEMA = 'erp';

view:

3、根据库名获取所有的字段信息

SELECT
    TABLE_SCHEMA AS '库名',
    TABLE_NAME AS '表名',
    COLUMN_NAME AS '列名',
    ORDINAL_POSITION AS '列的排列顺序',
    COLUMN_DEFAULT AS '默认值',
    IS_NULLABLE AS '是否为空',
    DATA_TYPE AS '数据类型',
    CHARACTER_MAXIMUM_LENGTH AS '字符最大长度',
    NUMERIC_PRECISION AS '数值精度(最大位数)',
    NUMERIC_SCALE AS '小数精度',
    COLUMN_TYPE AS 列类型,
    COLUMN_KEY 'KEY',
    EXTRA AS '额外说明',
    COLUMN_COMMENT AS '注释'
FROM
    information_schema.`COLUMNS`
WHERE
    TABLE_SCHEMA = 'erp'
ORDER BY
    TABLE_NAME,
    ORDINAL_POSITION;