通过存储过程更新数据

Question

I have two tables (Table 1 and Table 2) which are listed below. I wanted to update a column in Table 2 while getting the data from Table 1.

Table 1

+-----------+---------------+---------------------+
+  form_id  +   request_id  +         BatchNo     +
+-----------+---------------+---------------------+
+  5649464  +      562      +     Batch5649464_1  +
+-----------+---------------+---------------------+
+  5649464  +      563      +     Batch5649464_11 +
+-----------+---------------+---------------------+

Table 2

+------------+---------------+-----------+
+  NumberId  +   ServiceName +    RefId  +
+------------+---------------+-----------+
+  5649464   +      XYZ      +     0     +
+------------+---------------+-----------+
+  5649464   +      XYZ      +     0     +
+------------+---------------+-----------+

In Table 1 there are two rows as per list above. By Default my RefId is 0. I have to update that column with the data from Table 1 (request_id). As you can see request_id have two different data. Both data (562 and 563) should get updated as per my Expected Output. But right now I am getting result as per my Initial Output. Can anyone help to get as per my Expected Output?

DECLARE @Tempnumbers TABLE
            (
              form_id INT ,
              request_id INT
            );

         ;
        WITH    Result
                  AS ( SELECT   form_id ,
                                CONVERT(BIGINT, ( CONVERT(VARCHAR, request_id) )) AS request_id
                       FROM     [Table1] 
                     )
            INSERT  INTO @Tempnumbers
                    SELECT  form_id, request_id
                    FROM    Result;

        UPDATE  DT
        SET    RefID = request_id
       FROM    Table2 DT 
       INNER JOIN @Tempnumbers TN ON TN.NumberId = DT.form_id;

Initial Output

+------------+---------------+-----------+
+  NumberId  +   ServiceName +    RefId  +
+------------+---------------+-----------+
+  5649464   +      XYZ      +     562   +
+------------+---------------+-----------+
+  5649464   +      XYZ      +     562   +
+------------+---------------+-----------+

Expected Output

+------------+---------------+-----------+
+  NumberId  +   ServiceName +    RefId  +
+------------+---------------+-----------+
+  5649464   +      XYZ      +     562   +
+------------+---------------+-----------+
+  5649464   +      XYZ      +     563   +
+------------+---------------+-----------+

Answer 1

You can use ROW_NUMBER() to join tables and update RefId

;WITH cte1 AS (
    SELECT  *,
            ROW_NUMBER() OVER (PARTITION BY form_id ORDER BY request_id) as rn
    FROM Table1 t1
), cte2 AS (
    SELECT  *,
            ROW_NUMBER() OVER (PARTITION BY NumberId ORDER BY RefId) as rn
    FROM Table2 t2
)

UPDATE c2
SET RefId = c1.request_id
FROM cte1 c1
INNER JOIN cte2 c2
    ON c1.form_id = c2.NumberId AND c1.rn = c2.rn

If you then select from Table2 you will get:

NumberId    ServiceName RefId
5649464     XYZ         562
5649464     XYZ         563

Answer 2

Table2没有主键，因此您不能使用一个值更新第一行，而使用不同值更新第二行，除非您将主键添加到table2