mysql表和字段注釋的sql語句

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取字段注釋

SELECT COLUMN_NAME 列名, DATA_TYPE 字段類型, COLUMN_COMMENT 字段注釋
FROM INFORMATION_SCHEMA.COLUMNS
WHERE table_name = 'companies'##表名
AND table_schema = 'testhuicard'##數據庫名
AND column_name LIKE 'c_name'##字段名

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例子：
SELECT COLUMN_COMMENT FROM INFORMATION_SCHEMA.COLUMNS
WHERE table_name = 'admin'
AND table_schema = 'datas'
AND column_name LIKE 'name'

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SELECT table_name  表名,TABLE_COMMENT 表注釋 FROM INFORMATION_SCHEMA.TABLES  WHERE table_schema = 'testhuicard' ##數據庫名

AND table_name LIKE 'companies'##表名

參考 http://dev.mysql.com/doc/refman/5.1/zh/information-schema.html.
mysql手冊：23.1. INFORMATION_SCHEMA表

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