SQL Server的 排序规则(collation)冲突和解决方案[转]

排序规则指定了表示每个字符的位模式。它还指定了用于排序和比较字符的规则。排序规则具有下面的特征：

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-- 1. Create TableA.

CREATE TABLE TagsTableA

(

TagName NVARCHAR(64) COLLATE Chinese_PRC_BIN

)

-- 2. Create TableB.

CREATE TABLE TagsTableB

(

TagName NVARCHAR(64) COLLATE Chinese_PRC_CI_AS

)

-- 3. Try to join them

SELECT * from TagsTableA A INNER JOIN TagsTableB B on A.TagName = B.TagName

/****** 对?象ó: StoredProcedure [blogs].[up_CreateGetTagIds] 脚本日期: 01/20/2010 19:10:32 ******/

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

/*

RETURN VALUES:

Ids

*/

-- =============================================

-- Author: <Lance Zhang>

-- Create date: <2010-01-06>

-- Description: <Make sure all the tag EXISTS in DB, and then get their ids.>

-- 1. Create Temp Table.

-- 2. Insert TagNames into Temp Table.

-- 3. Add new Tags to [Categories] from query Temp Table.

-- 4. Batch Get All Tag Ids from [Categories].

-- 5. Clear and drop Temp Table.

-- =============================================

ALTER PROCEDURE [blogs].[up_CreateGetTagIds]

(

@BlogId INT,

@TagNames XML

)

AS

BEGIN

/******************************* SET CONFIG *************************************************/

SET NOCOUNT ON

SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED

SET NUMERIC_ROUNDABORT OFF

/******************************* DECLARE VARIABLE *************************************************/

/********************************BEGIN TRANSATION**********************************************/

BEGIN TRY

BEGIN TRANSACTION;

-- 1. Create Temp Table.

CREATE TABLE #TagsTable

(

TagName NVARCHAR(64)

)

-- 2. Insert TagNames into Temp Table.

INSERT INTO

#TagsTable

SELECT

TG.Tags.value('@i','NVARCHAR(64)') AS TagName

FROM

@TagNames.nodes('/ts/t') TG(Tags)

-- 3. Add new Tags to [Categories] from query Temp Table.

BEGIN

INSERT INTO

[Categories]

(

[BlogId]

,[ParentId]

,[CategoryType]

,[CategoryName]

,[LoweredCategoryName]

,[Slug]

,[LoweredSlug]

,[Description]

,[CreatedDateUtc]

,[TotalEntities]

,[SortOrder]

,[State]

)

SELECT

@BlogId,

0, -- ParentId, 0 as default.

2, -- CategoryType, 2 as Post Tag.

TT.TagName,

LOWER(TT.TagName),

TT.TagName, -- Slug, use CategoryName as default.

LOWER(TT.TagName), -- LoweredSlug, use LoweredCategoryName as default.

'', -- Description, Empty as default.

GETUTCDATE(),

0, -- TotalEntities, 0 as default.

1, -- SortOrder of PostTags can always be 1.

1 -- State, 1 as Normal.

FROM

#TagsTable TT

WHERE

LOWER(TT.TagName) NOT IN

(

SELECT

C.[LoweredCategoryName]

FROM

[Categories] C WITH( UPDLOCK, HOLDLOCK )

WHERE

[BlogId] = @BlogId

AND [CategoryType] = 2 -- Post Tag.

)

END

-- 4. Batch Get All Tag Ids from [Categories].

BEGIN

SELECT

[CategoryId]

FROM

[Categories] C WITH(NOLOCK)

JOIN

#TagsTable TT

ON

C.[LoweredCategoryName] = LOWER( TT.TagName )

WHERE

C.[BlogId] = @BlogId

AND C.[CategoryType] = 2 -- Post Tag.

AND C.[State] = 1 -- 1 as Normal status.

END

-- 5. Clear and drop Temp Table.

TRUNCATE TABLE

#TagsTable

DROP TABLE

#TagsTable

COMMIT TRANSACTION;

RETURN 1

END TRY

BEGIN CATCH

IF XACT_STATE() <> 0

BEGIN

ROLLBACK TRANSACTION;

RETURN -1

END

END CATCH

END

GO

Insert into Security.Report (Name)

Select C.Path From SSRS.Catalog C

Where C.Path Collate Database_Default Like @ReportPath + '/%'

And C.Path Collate Database_Default Not In (Select Name From Security.Report R)

-- 1. Create Temp Table.

CREATE TABLE #TagsTable

(

TagName NVARCHAR(64) COLLATE DATABASE_DEFAULT

)