|
|
# 一、统计
|
|
|
## 1.1 数据量统计
|
|
|
```sql
|
|
|
exec sp_spaceused 表名;
|
|
|
```
|
|
|
|
|
|
## 1.2 批量统计
|
|
|
本质是循环
|
|
|
```sql
|
|
|
exec sp_MSforeachtable "exec sp_spaceused '?'"
|
|
|
```
|
|
|
|
|
|
# 二、分页
|
|
|
## 2.1 topN
|
|
|
查看前5条
|
|
|
```sql
|
|
|
select TOP 5 *from T_ProductMain
|
|
|
```
|
|
|
|
|
|
## 2.2 分页查询
|
|
|
要查询上述结果中第 7 条到第 9 条记录
|
|
|
```sql
|
|
|
select top 3 id from tablename
|
|
|
where id not in (
|
|
|
select top 6 id from tablename
|
|
|
)
|
|
|
```
|
|
|
m-1=6，m=7
|
|
|
```sql
|
|
|
select top (n-m+1) id from tablename
|
|
|
where id not in (
|
|
|
select top m-1 id from tablename
|
|
|
)
|
|
|
```
|
|
|
通过行号分页
|
|
|
```sql
|
|
|
SELECT * FROM
|
|
|
(
|
|
|
SELECT ROW_NUMBER()over(order by getdate()) AS rownumber,* from T_ProductMain
|
|
|
) AS #a
|
|
|
WHERE #a.rownumber>=1 AND #a.rownumber<=5
|
|
|
```
|
|
|
sqlserver 2012及以上版本支持
|
|
|
```sql
|
|
|
SELECT * FROM T_AttrPart
|
|
|
ORDER BY PartNo offset 0 ROWS FETCH NEXT 10 ROWS ONLY
|
|
|
```
|
|
|
|
|
|
# 三、元数据
|
|
|
## 3.1 查看所有表名
|
|
|
```sql
|
|
|
select top 10000
|
|
|
ROW_NUMBER() OVER (ORDER BY a.name) AS No,
|
|
|
a.name AS 表名,
|
|
|
CONVERT(NVARCHAR(100),isnull(g.[value],'-')) AS 说明
|
|
|
from
|
|
|
sys.tables a left join sys.extended_properties g
|
|
|
on (a.object_id = g.major_id AND g.minor_id = 0);
|
|
|
```
|
|
|
|
|
|
## 3.2 查看字段及类型
|
|
|
```sql
|
|
|
select column_name name,data_type type
|
|
|
from information_schema.columns
|
|
|
where table_name = 'T_AltAffix'
|
|
|
```
|
|
|
|
|
|
## 3.3 查看数据库版本
|
|
|
```sql
|
|
|
SELECT SERVERPROPERTY('productversion') as version_code, SERVERPROPERTY ('productlevel') as version_level, SERVERPROPERTY ('edition') as version_type
|
|
|
```
|
|
|
|
|
|
## 3.4 系统自带
|
|
|
+ 存储过程
|
|
|
```sql
|
|
|
dt_addtosourcecontrol
|
|
|
dt_addtosourcecontrol_u
|
|
|
dt_adduserobject
|
|
|
dt_adduserobject_vcs
|
|
|
dt_checkinobject
|
|
|
dt_checkinobject_u
|
|
|
dt_checkoutobject
|
|
|
dt_checkoutobject_u
|
|
|
dt_droppropertiesbyid
|
|
|
dt_dropuserobjectbyid
|
|
|
dt_generateansiname
|
|
|
dt_getobjwithprop
|
|
|
dt_getobjwithprop_u
|
|
|
dt_getpropertiesbyid
|
|
|
dt_getpropertiesbyid_u
|
|
|
dt_getpropertiesbyid_vcs
|
|
|
dt_getpropertiesbyid_vcs_u
|
|
|
dt_isundersourcecontrol
|
|
|
dt_isundersourcecontrol_u
|
|
|
dt_removefromsourcecontrol
|
|
|
dt_setpropertybyid
|
|
|
dt_setpropertybyid_u
|
|
|
dt_validateloginparams
|
|
|
dt_validateloginparams_u
|
|
|
dt_vcsenabled
|
|
|
dt_verstamp006
|
|
|
dt_verstamp007
|
|
|
dt_whocheckedout
|
|
|
dt_whocheckedout_u
|
|
|
```
|
|
|
|
|
|
## 3.5 查看字符集
|
|
|
```sql
|
|
|
SELECT COLLATIONPROPERTY('Chinese_PRC_Stroke_CI_AI_KS_WS', 'CodePage');
|
|
|
|
|
|
select SERVERPROPERTY('Sqlcharsetname');
|
|
|
```
|
|
|
| 字符集编码 | 类型 |
|
|
|
| ---------- | --------------- |
|
|
|
| 936 | 简体中文GBK |
|
|
|
| 950 | 繁体中文BIG5 |
|
|
|
| 437 | 美国/加拿大英语 |
|
|
|
| 932 | 日文 |
|
|
|
| 949 | 韩文 |
|
|
|
| 866 | 俄文 |
|
|
|
| 65001 | unicode UFT-8 |
|
|
|
|
|
|
## 3.6 查看数据占用大小
|
|
|
```sql
|
|
|
SELECT a.name [文件名称] ,cast(a.[size]*1.0/128 as decimal(12,1)) AS [文件设置大小(MB)] ,
|
|
|
CAST( fileproperty(s.name,'SpaceUsed')/(8*16.0) AS DECIMAL(12,1)) AS [文件所占空间(MB)] ,
|
|
|
CAST( (fileproperty(s.name,'SpaceUsed')/(8*16.0))/(s.size/(8*16.0))*100.0 AS DECIMAL(12,1)) AS [所占空间率%] ,
|
|
|
CASE WHEN A.growth =0 THEN '文件大小固定，不会增长' ELSE '文件将自动增长' end [增长模式] ,CASE WHEN A.growth > 0 AND is_percent_growth = 0
|
|
|
THEN '增量为固定大小' WHEN A.growth > 0 AND is_percent_growth = 1 THEN '增量将用整数百分比表示' ELSE '文件大小固定，不会增长' END AS [增量模式] ,
|
|
|
CASE WHEN A.growth > 0 AND is_percent_growth = 0 THEN cast(cast(a.growth*1.0/128as decimal(12,0)) AS VARCHAR)+'MB'
|
|
|
WHEN A.growth > 0 AND is_percent_growth = 1 THEN cast(cast(a.growth AS decimal(12,0)) AS VARCHAR)+'%' ELSE '文件大小固定，不会增长' end AS [增长值(%或MB)] ,
|
|
|
a.physical_name AS [文件所在目录] ,a.type_desc AS [文件类型]
|
|
|
FROM sys.database_files a
|
|
|
INNER JOIN sys.sysfiles AS s ON a.[file_id]=s.fileid
|
|
|
LEFT JOIN sys.dm_db_file_space_usage b ON a.[file_id]=b.[file_id] ORDER BY a.[type]
|
|
|
```
|
|
|
|
|
|
# 四、视图
|
|
|
+ 索引视图
|
|
|
```sql
|
|
|
# 创建索引视图，必须指定列名
|
|
|
create view vwi_T_AttrPart WITH SCHEMABINDING as
|
|
|
SELECT ROW_NUMBER()over(order by getdate()) AS rownumber,PartNo ,ParentNO ,PartName ,SectNo ,OrderNo ,SessionCode ,IsNew ,AltMainNo ,PayPartID ,EngineerTypeID1 ,EngineerTypeID2 ,EngineerTypeID3 ,EngineerID ,SectDetailID ,StartPile ,EndPile ,CenterPile ,Mileage ,PartTypeID ,PartRemarks from dbo.T_AttrPart
|
|
|
|
|
|
# 添加索引列（报错:不能在索引或统计信息中使用 视图'dbo.vwi_T_AttrPart' 的列 'rownumber'，也不能将该列用作分区键，因为它不具有确定性）
|
|
|
CREATE UNIQUE CLUSTERED INDEX
|
|
|
ucidx_rownumber
|
|
|
ON dbo.vwi_T_AttrPart(rownumber);
|
|
|
``` |
