数据库原来的排序规则为:Chinese_PRC_CI_AS,不区分全角和半角
现在通过更改数据库排序规格更改为:Chinese_PRC_CI_AS_WS,区分全角半角排序规则
但是现在进入各个表中的列看,有很多排序规则依然为Chinese_PRC_CI_AS,这有可能是原来建立表的时候指定了排序规则
现在我要怎样把所有表的列全部更改为同一种排序规则?
感谢!
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CREATE TABLE TEST(ID VARCHAR(10) COLLATE Chinese_PRC_CI_AS, ID1 VARCHAR COLLATE Chinese_PRC_CI_AS, ID2 VARCHAR(MAX) COLLATE Chinese_PRC_CI_AS, ID3 NVARCHAR(10) COLLATE Chinese_PRC_CI_AS) GO SELECT * FROM INFORMATION_SCHEMA.COLUMNSWHERE COLLATION_NAME='Chinese_PRC_CI_AS'GO WHILE 1=1 BEGIN DECLARE @TABLE_NAME NVARCHAR(50) ,@COLUMN_NAME NVARCHAR(50),@TYPE NVARCHAR(50) SELECT TOP 1 @TABLE_NAME=TABLE_NAME,@COLUMN_NAME=COLUMN_NAME ,@TYPE=DATA_TYPE+CASE CHARACTER_MAXIMUM_LENGTH WHEN -1 THEN '(max)' WHEN 1 THEN '' ELSE '('+LTRIM(CHARACTER_MAXIMUM_LENGTH)+')'END FROM INFORMATION_SCHEMA.COLUMNS WHERE COLLATION_NAME='Chinese_PRC_CI_AS' IF @@ROWCOUNT>0 BEGIN EXEC ('ALTER TABLE [email protected]_NAME+' ALTER COLUMN [email protected]_NAME+' '+ @TYPE+' COLLATE Chinese_PRC_CI_AS_WS'); END ELSE BREAK;ENDGOSELECT * FROM INFORMATION_SCHEMA.COLUMNSWHERE COLLATION_NAME='Chinese_PRC_CI_AS'GO DROP TABLE TEST
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ALTER DATABASE dbname COLLATE Chinese_PRC_CI_AS_WSGOSET NOCOUNT ONDECLARE @S NVARCHAR(1000)DECLARE C CURSOR FOR --不区分大小写 SELECT 'ALTER TABLE ['+B.NAME+'] ALTER COLUMN ['+A.NAME+'] '+ TYPE_NAME(A.XTYPE)+ CASE WHEN TYPE_NAME(A.XTYPE) IN('TEXT','NTEXT') THEN '' ELSE QUOTENAME(A.LENGTH,'(') END +' COLLATE CHINESE_PRC_CI_AS_WS' FROM SYSCOLUMNS A JOIN SYSOBJECTS B ON A.ID=B.ID AND B.TYPE='U' WHERE TYPE_NAME(A.XTYPE) IN('VARCHAR','CHAR','NVARCHAR','NCHAR','TEXT','NTEXT')OPEN CFETCH C INTO @SWHILE @@FETCH_STATUS=0BEGIN EXEC(@S) FETCH C INTO @SENDCLOSE CDEALLOCATE CGO
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---以下为刚编写的，未进行大规模测试，操作前请先备份数据库，以便出问题时还原。有问题回贴。--1.生成主键约束脚本并引出 SELECT 'ALTER TABLE ' + QUOTENAME(a.TABLE_NAME) + ' ADD CONSTRAINT ' + a.CONSTRAINT_NAME + ' PRIMARY KEY (' + QUOTENAME(COLUMN_NAME) +');' FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE a JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS b ON a.CONSTRAINT_NAME=b.CONSTRAINT_NAME WHERE CONSTRAINT_TYPE='PRIMARY KEY' --2.生成外键约束脚本并引出 SELECT 'ALTER TABLE ' + QUOTENAME(OBJECT_NAME(a.PARENT_OBJECT_ID)) --表名 + ' ADD CONSTRAINT ' + OBJECT_NAME(a.OBJECT_ID) --约束名 + ' FOREIGN KEY (' + QUOTENAME(c.name) --字段名 + ') REFERENCES ' + QUOTENAME(OBJECT_NAME(a.REFERENCED_OBJECT_ID))--被引用表名 + ' (' + QUOTENAME(d.name)--被引用字段名 + ')' + CASE WHEN a.delete_referential_action=1 THEN ' ON DELETE CASCADE ' ELSE '' END + CASE WHEN update_referential_action=1 THEN ' ON UPDATE CASCADE ' ELSE '' END +';' AS [Foreing Key SQL]FROM sys.foreign_keys a JOIN sys.foreign_key_columns b ON a.[object_id]=b.constraint_object_id JOIN sys.[columns] c ON b.parent_object_id=c.[object_id] AND b.parent_column_id=c.column_id join sys.[columns] d ON b.referenced_object_id=d.[object_id] AND b.referenced_column_id=d.column_id --3.删除外键约束 SET NOCOUNT ON DECLARE c1 cursor for select 'alter table ['+ object_name(parent_obj) + '] drop constraint ['+name+']; ' from sysobjects where xtype = 'F' open c1 declare @c1 varchar(8000) fetch next from c1 into @c1 while(@@fetch_status=0) begin exec(@c1) fetch next from c1 into @c1 end close c1 deallocate c1 GO --4.删除主键约束 SET NOCOUNT ON DECLARE c1 cursor for select 'alter table ['+ object_name(parent_obj) + '] drop constraint ['+name+']; ' from sysobjects where xtype = 'PK' open c1 declare @c1 varchar(8000) fetch next from c1 into @c1 while(@@fetch_status=0) begin exec(@c1) fetch next from c1 into @c1 end close c1 deallocate c1 GO --5.修改排序规则 SET NOCOUNT ON DECLARE @S NVARCHAR(1000) DECLARE C CURSOR FOR --不区分大小写 SELECT 'ALTER TABLE ['+TABLE_NAME+'] ALTER COLUMN ['+COLUMN_NAME+'] ' + DATA_TYPE + CASE WHEN DATA_TYPE IN('TEXT','NTEXT') THEN '' ELSE QUOTENAME(CHARACTER_MAXIMUM_LENGTH,'(') END + ' COLLATE CHINESE_PRC_CI_AS_WS ' + CASE IS_NULLABLE WHEN 'NO' THEN ' NOT NULL ' ELSE '' END FROM INFORMATION_SCHEMA.COLUMNS WHERE DATA_TYPE IN('varchar','nvarchar','char','nchar','text','ntext') OPEN C FETCH C INTO @S WHILE @@FETCH_STATUS=0 BEGIN EXEC(@S) FETCH C INTO @S END CLOSE C DEALLOCATE C GO--6.重新创建主键约束(执行导出的脚本) --7.重新创建外键约束脚本(执行导出的脚本)