sql语法
Distinct
SELECT DISTINCT "栏位"
from "表格名"
Where
SELECT "栏位"
from "表格名"
WHERE "condition"
And/Or
SELECT "栏位"
from "表格名"
WHERE "简单条件"
{[AND|OR] "简单条件"}+
In
SELECT "栏位"
from "表格名"
WHERE "栏位" IN ('值1', '值2', ...)
Between
SELECT "栏位"
from "表格名"
WHERE "栏位" BETWEEN '值1' AND '值2'
Like
SELECT "栏位"
from "表格名"
WHERE "栏位" LIKE {模式}
Order By
SELECT "栏位"
from "表格名"
[WHERE "条件"]
ORDER BY "栏位" [ASC, DESC]
Count
SELECT COUNT("栏位")
from "表格名"
Group By
SELECT "栏位1", SUM("栏位2")
from "表格名"
GROUP BY "栏位1"
Having
SELECT "栏位1", SUM("栏位2")
from "表格名"
GROUP BY "栏位1"
HAVING (栏位)
Create Table
CREATE TABLE "表格名"
("栏位 1" "栏位 1 资料种类",
"栏位 2" "栏位 2 资料种类",
... )
Drop Table
DROP TABLE "表格名"
Truncate Table
TRUNCATE TABLE "表格名"
Insert Into
INSERT INTO "表格名" ("栏位1", "栏位2", ...)
VALUES ("值1", "值2", ...)
Update
UPDATE "表格名"
SET "栏位1" = [新值]
WHERE {条件}
Delete from
DELETE from "表格名"
WHERE {条件}
相关文档：
1. 获取数据库中当前月份的相关数据
SELECT WorkerSortID, SUM(WorkerCount) AS WorkerMothCount
from WorkerRecord
WHERE (YEAR(WorkerTime) = YEAR({ fn NOW() })) AND (MONTH(WorkerTime)
= MONTH({ fn NOW() })) AND (WorkerCount > 0) AND (WorkerID = 'wy')
GROUP BY Worker ......
1.先启用 xp_cmdshell 扩展存储过程：
Use Master
GO
Exec sp_configure 'show advanced options', 1
GO
Reconfigure;
GO
sp_configure 'xp_cmdshell', 1
GO
Reconfigure;
GO
(注：因为xp_cmdshell是高级选项，所以这里启动xp_cmdshell，需要先将 show advanced ......
SQL Server中文版的默认的日期字段datetime格式是yyyy-mm-dd Thh:mm:ss.mmm
例如:
select getdate()
2004-09-12 11:06:08.177
这对于在要不同数据库间转移数据或者习惯oracle日期格式YYYY-MM-DD HH24:MI:SS的人多少有些不方便.
我整理了一下SQL Server里面可能经常会用到的日期格式转换方法:
举例如下:
select CONV ......
JAVA－字符串过滤类
package cn.com.hbivt.util;
/**
* Title:
*
* Description:
*
* Copyright: Copyright (c) 2005
*
* Company:
*
* @author not attributable
* @version 1.0
*/
public class StringUtils {
......
