mysql

-- 查看表结构

DESC 表名;

　　

-- 查看 表 - 字段 - 结构信息

SELECT
	table_name,
	column_name,
	column_comment 
FROM
	information_schema.COLUMNS 
WHERE
	table_schema = '表所在的库' 
	AND table_name = '要查的表';

　　

SELECT
	ORDINAL_POSITION 序号,
	COLUMN_NAME 属性,
	COLUMN_TYPE 数据类型,

IF (COLUMN_KEY = 'PRI', '√', '') AS '主键',

IF (
	EXTRA = 'auto_increment',
	'√',
	''
) AS '自增标识',

IF (IS_NULLABLE = 'NO', '√', '') AS '非空',
 COLUMN_COMMENT 注释
FROM
	INFORMATION_SCHEMA. COLUMNS
WHERE
	table_schema = 'baggagetrack'
AND table_name = 'resource'
ORDER BY
	ORDINAL_POSITION ASC;

　　

-- 查看 库 - 表 - 结构信息

SELECT
	table_name,
	table_comment 
FROM
	information_schema.TABLES 
WHERE
	table_schema = '表所在的库' 
	AND table_name = '要查的表';

　　

-- 查看表的DDL语句

SHOW CREATE TABLE 表名;