mysql表和字段注释的sql语句

---恢复内容开始---

取字段注释

SELECT COLUMN_NAME 列名, DATA_TYPE 字段类型, COLUMN_COMMENT 字段注释
FROM INFORMATION_SCHEMA.COLUMNS
WHERE table_name = 'companies'##表名
AND table_schema = 'testhuicard'##数据库名
AND column_name LIKE 'c_name'##字段名

--------------------------------------------------------------------------

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

--------------------------------------------------------------------------

SELECT table_name  表名,TABLE_COMMENT 表注释 FROM INFORMATION_SCHEMA.TABLES  WHERE table_schema = 'testhuicard' ##数据库名

AND table_name LIKE 'companies'##表名

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

---恢复内容结束---