Sql 在存储过程中拆分后生成insert语句

我有一个存储过程，它接受类型为

VARCHAR（MAX）

的参数。该参数包含由逗号分隔的字符串，如

@test = 'test123,test456,test789';

基于该参数，我想生成多个insert语句

我将使用此问题中定义的拆分函数：

你能给我举个例子，在用逗号分割字符串后如何生成插入吗

逻辑步骤应如下所示：

@test = 'test123,test456,test789';
split @test
use while or cursor ? (I don't know)
INSERT INTO X values ('test123')
INSERT INTO X values ('test456')
...

---

您可以动态地创建SQL语句，然后运行该命令。实际上，循环对您来说并不是必需的。此脚本在一个INSERT语句中提供多个INSERT

DECLARE @test nvarchar(100) = 'test123,test456,test789';  
DECLARE @dml nvarchar(max) = N''
SET @dml = 'INSERT [dbo].[test2] VALUES' + '(''' + REPLACE(@test, ',', '''),(''') + ''')'
EXEC sp_executesql @dml

您还可以使用带有动态管理功能的选项

0=未安装全文。1=已安装全文。NULL=无效输入或错误

如果未安装0=全文，则此帖子对您是必需的

---

此查询将拆分字符串，然后循环结果以构造插入注释

declare @test varchar(30) = 'test123,test456,test789';

-- retrieve number of comma(s) in @test
declare @i int = len(@test) - len(replace(@test,',','')) + 1
declare @cmd nvarchar(255)

-- loop
while @i >= 0
begin
    select @cmd = 'INSERT INTO X VALUES (''' +  parsename(replace(@test, ',', '.'), @i) + ''');';
    -- execute sql
    exec sp_executesql @cmd
    set @i = @i - 1
end

---

试着像下面一样，它会帮助你

这里您不需要任何用户定义的函数。。。。您只需使用下面的代码并获得结果

DECLARE @test NVARCHAR(MAX)
SET @test = 'test123,test456,test789'
SET @test = ',' + @test + ','
DECLARE @Part NVARCHAR(MAX)
DECLARE @INDEX    INT
SET @INDEX = CHARINDEX(',',@test)
DECLARE @EIND INT set @EIND = 0

WHILE(@INDEX != LEN(@test))
BEGIN
    SET  @EIND = ISNULL(((CHARINDEX(',', @test, @INDEX + 1)) - @INDEX - 1), 0)

    INSERT INTO X SELECT (SUBSTRING(@test, (@INDEX  + 1),  @EIND)) -- Insert Comes Here

    SELECT @INDEX = ISNULL(CHARINDEX(',', @test, @INDEX + 1), 0)
END

---

如果列表中的项目数超过四个，则此操作将失败。

DECLARE @id VARCHAR(MAX)

SET @id = 'test123,test456,test789,'

WHILE CHARINDEX(',', @id) > 0 
BEGIN

DECLARE @tmpstr VARCHAR(50)
 SET @tmpstr = SUBSTRING(@id, 1, ( CHARINDEX(',', @id) - 1 ))

INSERT  INTO X

VALUES  ( 
          @tmpstr
        )
SET @id = SUBSTRING(@id, CHARINDEX(',', @id) + 1, LEN(@id))
END

declare @test varchar(30) = 'test123,test456,test789';

-- retrieve number of comma(s) in @test
declare @i int = len(@test) - len(replace(@test,',','')) + 1
declare @cmd nvarchar(255)

-- loop
while @i >= 0
begin
    select @cmd = 'INSERT INTO X VALUES (''' +  parsename(replace(@test, ',', '.'), @i) + ''');';
    -- execute sql
    exec sp_executesql @cmd
    set @i = @i - 1
end

DECLARE @test NVARCHAR(MAX)
SET @test = 'test123,test456,test789'
SET @test = ',' + @test + ','
DECLARE @Part NVARCHAR(MAX)
DECLARE @INDEX    INT
SET @INDEX = CHARINDEX(',',@test)
DECLARE @EIND INT set @EIND = 0

WHILE(@INDEX != LEN(@test))
BEGIN
    SET  @EIND = ISNULL(((CHARINDEX(',', @test, @INDEX + 1)) - @INDEX - 1), 0)

    INSERT INTO X SELECT (SUBSTRING(@test, (@INDEX  + 1),  @EIND)) -- Insert Comes Here

    SELECT @INDEX = ISNULL(CHARINDEX(',', @test, @INDEX + 1), 0)
END