mysql取表註釋和字段註釋

今天找到了取mysql表和字段註釋的語句

取字段註釋

SELECT COLUMN_NAME 列名, DATA_TYPE 字段類型, COLUMN_COMMENT 字段註釋
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

SELECT table_name  表名,TABLE_COMMENT 表註釋 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