SELECT 表名 = CASE WHEN a.colorder=1 THEN d.name
ELSE ''
END,表说明 = CASE WHEN a.colorder=1 THEN ISNULL(f.value,'')
ELSE ''
END,字段序号 = a.colorder,字段名 = a.name,
标识 = CASE WHEN COLUMNPROPERTY(a.id,a.name,'IsIdentity')=1 THEN '√'
ELSE '×'
END,
主键 = CASE WHEN EXISTS ( SELECT 1
FROM sysobjects
WHERE xtype='PK'
AND name IN (
SELECT name
FROM sysindexes
WHERE indid IN (
SELECT indid
FROM sysindexkeys
WHERE id=a.id
AND colid=a.colid)) )
THEN '√'
ELSE '×'
END,类型 = b.name,占用字节数 = a.length,
长度 = COLUMNPROPERTY(a.id,a.name,'PRECISION'),
小数位数 = ISNULL(COLUMNPROPERTY(a.id,a.name,'Scale'),0),
允许空 = CASE WHEN a.isnullable=1 THEN '√'
ELSE '×'
END,默认值 = ISNULL(e.text,''),字段说明 = ISNULL(g.[value],'')
FROM syscolumns a
LEFT JOIN systypes b
ON a.xusertype=b.xusertype
INNER JOIN sysobjects d
ON a.id=d.id
AND d.xtype='U'
AND d.name<>'dtproperties'
LEFT JOIN syscomments e
ON a.cdefault=e.id
LEFT JOIN sys.extended_properties g
ON a.id=g.major_id
AND a.colid=g.minor_id
LEFT JOIN sys.extended_properties f
ON d.id=f.major_id
AND f.minor_id=0 --where d.name='V_test' --如果只查询指定表,加上此条件
ORDER BY a.id,a.colorder;
查询出来的效果如图:
mysql查询每个表的描述_MS SQL SERVER 读取数据库中每个表的描述/注释以及表中字段/列的字段名 字段类型 字段描述/注释/说明等信息...
