列出MSSQL所有数据库名、所有表名、所有字段名
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SELECT
(case when a.colorder=1 then else '' end) N'表名',
a.colorder N'字段序号',
N'字段名',
(case when COLUMNPROPERTY( a.id,,'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 = ))))))) AND
(xtype = 'PK'))>0 then '√' else '' end) N'主键',
N'类型',
a.length N'占用字节数',
COLUMNPROPERTY(a.id,,'PRECISION') as N'长度',
isnull(COLUMNPROPERTY(a.id,,'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'
--into ##tx
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 <>'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
order by object_name(a.id),a.colorder