获取SQL Server表字段的各种属性

SELECT (CASE WHEN a.colorder=1 THEN d.name ELSE '' END) N'表名', a.colorder N'字段序号', a.name N'字段名', (CASE WHEN COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 THEN ''ELSE '' END) N'标识', (CASE WHEN (SELECT COUNT(*) FROM sysobjects WHER

SELECT
(CASE WHEN a.colorder=1 THEN d.name ELSE '' END) N'表名',
a.colorder N'字段序号',
a.name N'字段名',
(CASE WHEN COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 THEN '√'ELSE '' END) N'标识',
(CASE WHEN (SELECT COUNT(*)
FROM sysobjects
WHERE (name in
(SELECT name
FROM sysindexes
WHERE (id = a.id) AND (indid in
(SELECT indid
FROM sysindexkeys
WHERE (id = a.id) AND (colid in
(SELECT colid
FROM syscolumns
WHERE (id = a.id) AND (name = a.name))))))) AND
(xtype = 'PK'))>0 THEN '√' ELSE '' END) N'主键',
b.name N'类型',
a.length N'占用字节数',
COLUMNPROPERTY(a.id,a.name,'PRECISION') AS N'长度',
ISNULL(COLUMNPROPERTY(a.id,a.name,'Scale'),0) AS N'小数位数',
(CASE WHEN a.isnullable=1 THEN '√'ELSE '' END) N'允许空',
ISNULL(e.text,'') N'默认值',
ISNULL(g.[value],'') AS N'字段说明'
FROM syscolumns a
LEFT JOIN systypes b on a.xtype=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
WHERE
d.name = 'SW_Project' --要查询的表
ORDER BY
object_name(a.id), a.colorder

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