"Conversion failed when converting the nvarchar value '113332,113347' to data type int."

Question

我收到以下代码的错误。我将本地 ID 传递为“113332,113347”

cn.Open();
SqlCommand cmd = new SqlCommand("SelectUser", cn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@in_UserId", SqlDbType.Int).Value = Convert.ToInt32(userId);
cmd.Parameters.Add("@in_StartDate", SqlDbType.DateTime).Value = fromDate;
cmd.Parameters.Add("@in_EndDate", SqlDbType.DateTime).Value = toDate;
cmd.Parameters.Add("@in_LocalIds", SqlDbType.NVarChar, 100).Value = localids.ToString();
cmd.ExecuteNonQuery();

在数据库中，本地id是int数据类型。

存储过程代码如下

CREATE PROCEDURE [dbo].[User_Update] @in_UserId INT
,@in_StartDate DATETIME
,@in_EndDate DATETIME
,@in_LocalIds NVARCHAR(100)
AS
BEGIN
SELECT * FROM TABLE1 WHERE LocalId in (@in_LocalIds) AND UserId = @in_UserId
END
go

Answer 1

在 @in_LocalIds 参数中你有一个由 ',' 连接的 int，所以拆分值（在 SQL 中它应该是某种 while 循环），将值转换为 int 和将它们插入临时 table.

然后在您的 where 子句中使用 table。

编辑：

CREATE PROCEDURE [dbo].[User_Update] @in_UserId INT
,@in_StartDate DATETIME
,@in_EndDate DATETIME
,@in_LocalIds NVARCHAR(100)
AS
BEGIN

declare @tempLocalIds nvarchar(100)
declare @tempStrId nvarchar(100)
declare @tempId int
declare @idx int
declare @Ids TABLE ( ID int )

set @tempLocalIds = @in_LocalIds

while( len(@tempLocalIds) > 0)
begin
    -- find index of first ',' char
    set @idx = charindex(',', @tempLocalIds)
    -- get substring 0 to previously found index
    set @tempStrId = substring(@tempLocalIds, 0, @idx-1)
    -- convert the value
    set @tempId = convert(@tempStrId as int)
    -- remove the first number from string
    set @tempLocalIds = substring(@tempLocalIds, @idx, len(@tempLocalIds) - @idx -1) 


    -- insert into the temp table
    insert into @Ids(ID)
    values (@tempId)

end


SELECT * FROM TABLE1 WHERE LocalId in (select ID from @Ids) AND UserId = @in_UserId
END
go

"Conversion failed when converting the nvarchar value '113332,113347' to data type int."

"Conversion failed when converting the nvarchar value '113332,113347' to data type int."

c#

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