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我有这样的 Exam_Result 表和 Subject_Info 表....

1] Exam_Result table....

Resultid         numeric(18, 0)   Unchecked
Enroll_Number    varchar(50)      Checked
Student_Name     varchar(100)     Checked
Course_Id        varchar(50)      Checked
Semester         varchar(50)      Checked
Subject_Id       varchar(50)      Checked
MarksObtained    numeric(18, 0)   Checked
Exam_Type        varchar(50)      Checked

2] Subject_Info table....

Subject_Id       varchar(20)    Unchecked
Subject_Name     varchar(50)    Checked
Semester         varchar(10)    Checked
Course_Id        varchar(20)    Checked
Course_Type      varchar(20)    Checked

我想一次插入每个子标记....例如，想要输入具有 11111、Course_Id = CIV 和 Sem = 1 的唯一学生 Enroll_No 的每个子标记....

Enroll_Number 11111
Course_Id     CIV
Semester      1

这是主题...我想输入这样的标记...

Subject_Id   MarksObtained
EM           23
SM           25
CL           30

并且这个结果必须存储到 Exam_Result 表中......

注意：每个学期的科目都不是固定的，它可能会根据学校而改变......所以我希望它有动态的解决方案......

你能帮我解决这个问题吗..??? 或任何其他解决方案给我.... thnks提前

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2 回答 2

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我认为你可以用循环来做到这一点，这是一个例子

将@ID 声明为 VARCHAR(25)

SET @ID = '1,2,3,4,'

选择 @ID 作为 TOTAL_ID

声明@DELIMITER CHAR(1)
设置@DELIMITER = ','

将 @CURRENTID 声明为 INT

WHILE(CHARINDEX(@DELIMITER,@ID,0) <> 0)

开始选择@CURRENTID
= RTRIM(LTRIM(SUBSTRING(@ID,1,CHARINDEX(@DELIMITER,@ID,0 )-1 ))),

     @ID = RTRIM(LTRIM(SUBSTRING(@ID,CHARINDEX(@DELIMITER,@ID,0)+1,LEN(@ID))))

选择 @CURRENTID 作为 CURRENTID

选择 @ID 作为 REMAINING_ID

结尾

根据您的要求，我已经为您完成了循环

将@IDSCORE 声明为 VARCHAR(MAX)

SET @IDSCORE = 'EM,23,;SM,25,;CL,30,;'

声明 @MAINDELIMITER CHAR(1)

设置@MAINDELIMITER = ';'

声明@DELIMITER CHAR(1)

SET @DELIMITER = ','

声明 @CURRENTIDSCORE VARCHAR(MAX)

将@SUBJECTID 声明为 VARCHAR(10)

将@SCORE 声明为 VARCHAR(10)

如果（@IDSCORE 不为空）

开始

WHILE(CHARINDEX(@MAINDELIMITER,@IDSCORE,0) <> 0)

开始 

  PRINT @IDSCORE

  SELECT @CURRENTIDSCORE = RTRIM(LTRIM(SUBSTRING(@IDSCORE,1,CHARINDEX(@MAINDELIMITER,@IDSCORE,0 )-1 ))),
      @IDSCORE = RTRIM(LTRIM(SUBSTRING(@IDSCORE,CHARINDEX(@MAINDELIMITER,@IDSCORE,0)+1,LEN(@IDSCORE))))   
  SELECT @SUBJECTID = RTRIM(LTRIM(SUBSTRING(@CURRENTIDSCORE,1,CHARINDEX(@DELIMITER,@CURRENTIDSCORE,0 )-1 ))),
      @CURRENTIDSCORE = RTRIM(LTRIM(SUBSTRING(@CURRENTIDSCORE,CHARINDEX(@DELIMITER,@CURRENTIDSCORE,0)+1,LEN(@CURRENTIDSCORE))))
  SELECT @SCORE = RTRIM(LTRIM(SUBSTRING(@CURRENTIDSCORE,1,CHARINDEX(@DELIMITER,@CURRENTIDSCORE,0 )-1 ))),
      @CURRENTIDSCORE = RTRIM(LTRIM(SUBSTRING(@CURRENTIDSCORE,CHARINDEX(@DELIMITER,@CURRENTIDSCORE,0)+1,LEN(@CURRENTIDSCORE))))

  PRINT @CURRENTIDSCORE   

  PRINT @SUBJECTID

  PRINT @SCORE

结尾

结尾

于 2012-04-27T05:44:43.563 回答
0

使用 SQL Server 2005，您可以使用 INSERT... UNION ALL hack 在单个语句中插入多行：

INSERT INTO MyTable (FirstCol, SecondCol)
SELECT 'First' ,1
UNION ALL
SELECT 'Second' ,2
UNION ALL
SELECT 'Third' ,3
UNION ALL
SELECT 'Fourth' ,4
UNION ALL
SELECT 'Fifth' ,5

如此处更详细地描述：

http://blog.sqlauthority.com/2007/06/08/sql-server-insert-multiple-records-using-one-insert-statement-use-of-union-all/

顺便说一句，在 SQL Server 2008 中，TSQL 原生支持插入多行：

INSERT INTO Customers (Name, City, Phone)
VALUES
    ('Customer #1', 'Jerusalem', '2343245'),
    ('Customer #2', 'Tel Aviv', '0987345'),
    ('Customer #3', 'Haifa', '275466')

http://blogs.microsoft.co.il/blogs/bursteg/archive/2007/12/05/sql-server-2008-t-sql-insert-multiple-rows.aspx

编辑：

根据要求，要在 C# 中构建这样的字符串，您可以执行以下操作：

// create some dummy data
var data = new List<Tuple<string, int>>
{
    new Tuple<string, int>("First", 1),
    new Tuple<string, int>("Second", 2),
    new Tuple<string, int>("Third", 3)
};

// create the [UNION ALL]...SELECT clauses
var selectClauses = String.Join(
    " UNION ALL ", 
    data.Select(t => String.Format("SELECT '{0}', {1}", t.Item1, t.Item2)));

// build our entire SQL string
// this results in the string:
// "INSERT INTO MyTable (FirstCol, SecondCol) SELECT 'First', 1 UNION ALL SELECT 'Second', 2 UNION ALL SELECT 'Third', 3"
var sql = "INSERT INTO MyTable (FirstCol, SecondCol) " + selectClauses;

// now execute this string against your database

如果使用这种方法，您应该注意转义引号、SQL 注入等。这只是为了让你开始。

于 2012-04-27T04:48:01.257 回答