SQLSERVER常用语句

#1 导出数据字典

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 '是' else '' end,
类型=b.name,
长度=COLUMNPROPERTY(a.id,a.name,'PRECISION'),
占用字节数=a.length,
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.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
left join sys.extended_properties f on d.id=f.major_id and f.minor_id =0
where d.name in ('child', 'personal', 'marry', 'unit', 'check1', 'letter', 'jedt', 'bplan', 'xsb', 'ycdt') -- 过滤表名
order by d.name,a.id,a.colorder    --d.name标识根据表的名称排序,如果针对某张表进行查询则在order by的前方添加 where d.name=‘表名’条件语句