全库修改SQL Server现有排序规则

数据库报错信息：
无法解决 equal to 运算中 "SQL_Latin1_General_CP1_CI_AS" 和 "Chinese_PRC_CI_AS" 之间的排序规则冲突。

为解决排序规则冲突，可直接修改对应字段的排序规则，使其一致则可避免查询出错，如下：
ALTER TABLE [表名] ALTER COLUMN [字段名] nvarchar(256) COLLATE Chinese_PRC_CI_AS‘

SELECT
 t.name AS [Table],
 c.name AS [Column],
 c.collation_name AS [Collation],
 TYPE_NAME( c.system_type_id) AS [TypeName],
 c.max_length AS [TypeLength] 
FROM sys.columns c
 RIGHT JOIN sys.tables t ON c.object_id = t.object_id
WHERE c.collation_name IS NOT NULL

DECLARE @table NVARCHAR(128)--循环Item表名
DECLARE @column NVARCHAR(128)--循环Item字段名
DECLARE @type NVARCHAR(128)--对应字段的类型，char、nchar、varchar、nvarchar等
DECLARE @typeLenght NVARCHAR(128)--对应类型的长度，nchar、nvarchar需要将数值除于2
DECLARE @sql NVARCHAR(MAX )--要拼接执行的sql语句

 
SET ROWCOUNT 0

SELECT NULL mykey,
 c.name,
 t.name AS [Table],
 c.name AS [Column],
 c.collation_name AS [Collation],
 Type_name(c.system_type_id) AS [TypeName],
 c.max_length AS [TypeLength]
INTO #temp
FROM sys.columns c
 RIGHT JOIN sys.tables t
 ON c.object_id = t.object_id
WHERE c.collation_name IS NOT NULL
--先测试Product表
--AND t.name=‘Product‘

SET ROWCOUNT 1
UPDATE #temp SET mykey = 1

WHILE @@ROWCOUNT > 0
 BEGIN
 SET ROWCOUNT 0

 --每次查询第一条记录并赋值到对应变量中
 SELECT @table = [Table],
 @column = [Column],
 @type = TypeName,
 @typeLenght = TypeLength
 FROM #temp
 WHERE mykey = 1

 --nchar、nvarchar需要将数值除于2
 IF CONVERT(INT, @typeLenght) > 0 AND ( @type = ‘nvarchar‘ OR @type = ‘nchar‘ )
 BEGIN
 SET @typeLenght=CONVERT(NVARCHAR(128), CONVERT(INT, @typeLenght) / 2)
 END
 
 IF @typeLenght = ‘-1‘
 BEGIN
 SET @typeLenght=‘max‘
 END 

 --拼接sql，注意表名、字段名要带[]，避免Group等关键字
 SET @sql=‘ ALTER TABLE [‘ + @table + ‘] ALTER COLUMN [‘
 + @column + ‘] ‘ + @type + ‘(‘ + @typeLenght
 + ‘) COLLATE Chinese_PRC_CI_AS‘


 --Try执行
 BEGIN TRY
 EXEC(@sql)
 END TRY
 --Catch查询异常结果
 BEGIN CATCH
 SELECT @sql AS [ASL],
 Error_message() AS msg
 END CATCH

 DELETE #temp
 WHERE mykey = 1

 SET ROWCOUNT 1

 UPDATE #temp
 SET mykey = 1
 END

SET ROWCOUNT 0

DROP TABLE #temp