标签:information NAME COLUMN 查询 库名 mysql TABLE 数据 SCHEMA
根据库名获取所有表的信息
SELECT
*
FROM
information_schema.`TABLES`
WHERE
TABLE_SCHEMA = 'erp';
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:
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;
view:
根据库名获取所有的库和表字段的基本信息
SELECT
C.TABLE_SCHEMA AS '库名',
T.TABLE_NAME AS '表名',
T.TABLE_COMMENT AS '表注释',
C.COLUMN_NAME AS '列名',
C.COLUMN_COMMENT AS '列注释',
C.ORDINAL_POSITION AS '列的排列顺序',
C.COLUMN_DEFAULT AS '默认值',
C.IS_NULLABLE AS '是否为空',
C.DATA_TYPE AS '数据类型',
C.CHARACTER_MAXIMUM_LENGTH AS '字符最大长度',
C.NUMERIC_PRECISION AS '数值精度(最大位数)',
C.NUMERIC_SCALE AS '小数精度',
C.COLUMN_TYPE AS 列类型,
C.COLUMN_KEY 'KEY',
C.EXTRA AS '额外说明'
FROM
information_schema.`TABLES` T
LEFT JOIN information_schema.`COLUMNS` C ON T.TABLE_NAME = C.TABLE_NAME
AND T.TABLE_SCHEMA = C.TABLE_SCHEMA
WHERE
T.TABLE_SCHEMA = 'erp'
ORDER BY
C.TABLE_NAME,
C.ORDINAL_POSITION;
view:
标签:information,NAME,COLUMN,查询,库名,mysql,TABLE,数据,SCHEMA 来源: https://blog.csdn.net/DarkerSP/article/details/120528512
本站声明: 1. iCode9 技术分享网(下文简称本站)提供的所有内容,仅供技术学习、探讨和分享; 2. 关于本站的所有留言、评论、转载及引用,纯属内容发起人的个人观点,与本站观点和立场无关; 3. 关于本站的所有言论和文字,纯属内容发起人的个人观点,与本站观点和立场无关; 4. 本站文章均是网友提供,不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属;如您发现该文章侵犯了您的权益,可联系我们第一时间进行删除; 5. 本站为非盈利性的个人网站,所有内容不会用来进行牟利,也不会利用任何形式的广告来间接获益,纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。