SQL Server 2008读书笔记（0）：实用SQL语句

update Table1
set Table1.Column1 = Table1.Column2 from Table1

UPDATE Table1
SET Table1.Column1 = Table2.Column2 FROM Table2
WHERE Table1.Column3 = Table2.Column3

SELECT empid, YEAR(orderdate) AS orderyear, SUM(freight), COUNT(*) AS numorders
FROM Sales.Orders
WHERE custid = 71
GROUP BY empid, YEAR(orderdate)
HAVING COUNT(*) > 1
ORDER BY empid, orderyear

USE [TableName]
GO

SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [dbo].[GetDatas]
@Name varchar(max) = NULL,
@OrderExp varchar(20) = 'AssetNumber',
@OrderDirection varchar(10) = 'ASC',
@PageNum int = 1,
@PageSize int = 10,
@ResultCount int output
AS
BEGIN
SET NOCOUNT ON
DECLARE @tempDatas TABLE
(
Id int,
Name varchar(50) NULL,
RowNumber int
)
DECLARE @NameLike nvarchar(50)
DECLARE @Order nvarchar(50)

SET @AssetName = NULLIF(@AssetName, '')
SET @NameLike = '%' + @AssetName + '%'
SET @Order = @OrderExp + @OrderDirection

INSERT INTO @tempDatas (
Id,
Name,
RowNumber)
SELECT Id,
Name,
ROW_NUMBER()OVER(ORDER BY
CASE WHEN @Order = 'NameDESC' THEN Name END DESC,
CASE WHEN @Order = 'NameASC' THEN Name END ASC
)AS RowNumber
FROM dbo.MyObjects
WHERE ((@Name IS NULL) OR (@Name IS NOT NULL AND dbo.MyObjects.Name like @Name))

SELECT @ResultCount = COUNT(1)
FROM @tempDatas;

SELECT * FROM @tempDatas
WHERE RowNumber BETWEEN ((@PageNum - 1)*@PageSize + 1) AND @PageNum*@PageSize;

END

GO