sql 集合

select top 10 *
from yookee.N_Article where (ChannelId = 87) AND (Type = 390 OR Type = 89) AND IsIndex=1 And IsRecommend=1
AND (((VedioWhere = 0) 
AND (VedioWhereName IN ('港台','内地','日本','韩国')))OR (VedioWhere <> 0))
order by AddTime desc 

引用

如果vediowhere 这个字段为0的话就要再判断 vediowherename这个字段, 这个字段的值可能为,港台,内地,日本,韩国...不为0的话则不需要

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delete from  A where A.DJH not in (select B.DJH from B) 

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字段中取最后一个字

select right(你的字段,1）as 字段最后一个字 from 你的表 

select substring(你的字段,len(你的字段)-1,1 ）as 字段最后一个字 from 你的表

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清除SQL字段中的开头或结果部分中的乱字符、隐含字符

update 表 set 字段=LTRim(RTRim(字段))

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非空

select * from table where a is not null;

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1.INSERT INTO SELECT语句

      语句形式为：Insert into Table2(field1,field2,...) select value1,value2,... from Table1

      要求目标表Table2必须存在，由于目标表Table2已经存在，所以我们除了插入源表Table1的字段外，还可以插入常量。示例如下：

 Insert into Table2(a, c, d) select a,c,5 from Table1

  2.SELECT INTO FROM语句

      语句形式为：SELECT vale1, value2 into Table2 from Table1

      要求目标表Table2不存在，因为在插入时会自动创建表Table2，并将Table1中指定字段数据复制到Table2中

select a,c INTO Table2 from Table1

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  --3.通过Update方式更新
   

Update Table1 set c = (select c from Table2 where a = Table1.a) where c is null

假定有表Table1（a,b,c）和Table2（a,c)，现在Table1中有些记录字段c为null，要根据字段a在Table2中查找，取出字段a相等的字段c的值来更新Table1。
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INSERT INTO paLeAttEval
      (slRePoint, slIniPoint, slSerPoint, slDisPoint, departId, depLead)
SELECT slRePoint, slIniPoint, slSerPoint, slDisPoint,
          (SELECT department
         FROM paAllocation a
         WHERE b.subDepart = a.department AND DateDiff(mm, a.createDate, GetDate()) 
               = 0) AS departId,
          (SELECT departmentManager
         FROM paAllocation a
         WHERE b.subDepart = a.department AND DateDiff(mm, a.createDate, GetDate()) 
               = 0) AS depLead
FROM paLeASelAssess b

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CREATE FUNCTION fnGetEmployeesByCity (@sCity VARCHAR(30))
    RETURNS TABLE
AS
RETURN
    (
        SELECT    FirstName, LastName, Address
        FROM    Employees
        WHERE    City = @sCity 
    )
GO

可以从这个返回内联表值的 UDF 中选择或者甚至联接到它，因为它通过表数据类型返回一个行集，如下所示：

SELECT * FROM dbo.fnGetEmployeesByCity('seattle')

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CREATE FUNCTION fnCOM_2Digits (@sValue VARCHAR(2))
    RETURNS VARCHAR(2)
AS
BEGIN
    IF (LEN(@sValue) < 2)
        SET @sValue = '0' + @sValue 
    RETURN @sValue
END

--------------------

CREATE FUNCTION fnCOM_StandardDate (@dtDate DATETIME)
    RETURNS VARCHAR(10)
AS
BEGIN
    RETURN 
        dbo.fnCOM_2Digits (CAST(MONTH(@dtDate) AS VARCHAR(2))) + '/' +
        dbo.fnCOM_2Digits (CAST(DAY(@dtDate) AS VARCHAR(2))) + '/' +
        CAST(YEAR(@dtDate) AS VARCHAR(4)) 
END

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在 SELECT 语句中使用这个函数的可选方法是，在名为 NeedToReorder 的 Products 表中创建一个计算所得的列。该列并不定义为一种数据类型，而是定义为如图 3 所示的 fnNeedToReorder UDF 的返回值。要添加此列，我可以按以下方式更改 Products 表，以指示应计算这个列：

ALTER TABLE Products
    ADD  NeedToReorder AS dbo.fnNeedToReorder(ReorderLevel,   
    UnitsInStock, UnitsOnOrder, Discontinued

)

SELECT    ProductID,
    ReorderLevel, 
    UnitsInStock, 
    UnitsOnOrder,
    dbo.fnNeedToReorder(ProductId) AS sNeedToReorder
FROM    Products