关于sql server批量插入和更新的两种解决方案

数据库 2024/6/26 佚名

3 2 1

复制代码代码如下:
.游标方式 1 DECLARE @Data NVARCHAR(max)
SET @Data='1,tanw;2,keenboy'   --Id,Name

DECLARE @dataItem NVARCHAR(100)
DECLARE data_cursor CURSOR FOR (SELECT * FROM split(@Data,';'))
OPEN data_cursor
FETCH NEXT FROM data_cursor INTO @dataItem
WHILE @@FETCH_STATUS=0
BEGIN
DECLARE @Id INT
DECLARE @Name NVARCHAR(50)

DECLARE dataItem_cursor CURSOR FOR (SELECT * FROM split(@dataItem,','))
OPEN dataItem_cursor
FETCH NEXT FROM dataItem_cursor INTO @Id
FETCH NEXT FROM dataItem_cursor INTO @Name
CLOSE dataItem_cursor
DEALLOCATE dataItem_cursor

/*
   在这里做逻辑处理，插入或更新操作 ...
*/
END

CLOSE data_cursor
DEALLOCATE data_cursor

复制代码代码如下:
.While方式
DECLARE @Data NVARCHAR(max)
SET @Data='tanw,keenboy'   --Id,Name

DECLARE @Temp TABLE
(
    Id INT IDENTITY(1,1),
    Name NVARCHAR(50)
)
DECLARE @Id INT
DECLARE @Name NVARCHAR(50)
DECLARE @Results NVARCHAR(MAX) SET @Results=''
INSERT INTO @Temp SELECT (SELECT * FROM split(@Data,';'))

WHILE EXISTS(SELECT * FROM @Temp)
BEGIN
     SELECT TOP 1 @Id=Id,@Name=Name from @Temp
     DELETE FROM @Temp where [id] = @Id
     SET @Results=@Results+@Name+','

     /*

         在这里做逻辑处理，插入或更新操作 ...

     */
END
SELECT @Results