Question

首先为长标题道歉，但我找不到另一个合适的头衔对于我要解释的请求：在db中有3个表，一个提供文档头，一个提供相关详细信息，第三个用于＆＃34;链接＆＃34;在不同类型的文件之间（例如，如果有的话）发货单后跟发票，通常在月末生成，将所有发票分组同月的送货单）。涉及的表和字段称为：

    + DO11_DOCTESTATA  (for the headers)
     - DO11_DOCUM_MG36 Gives the type of the document stored (I need to retrieve data from 'FOR-FATRIEPDDT' and insert into 'FOR-DDT'
     - DO11_NUMDOC Contains the number of the document, needed to search WHERE do11_numdoc = equals the same number in DO33_DOCCORPORIF

    + DO30_DOCCORPO    (for the details)
     - DO30_PREZZO1    Contains the unity price, when I have a match between do11_numdoc = do33_doccorporif.do33_numnsdoc, I update this field)
     - DO30_PREZZO1IVA Same as before, but price added with VAT
     - DO30_IMPORTO    Price * Quantity
     - ...
     - ...

    + DO33_DOCCORPORIF (for the links)
     - DO33_NUMNSDOC  Which contains the number of the relative delivery note that I need to compare to DO11_DOCTESTATA.DO11_NUMDOC to find a match

我的要求是更新DO30_DOCCORPO中的某些字段，因为我需要更新发票中的价格通过将DO11_DOCTESTATA.DO11_NUMDOC中找到的数字与相同字段匹配，将相同的值放入相应的交货单中在DO33_DOCCORPORIF.DO33_NUMNSDOC

当找到匹配项时，我需要更新DO30_DOCCORPO中的字段，WHERE DO11_DOCTESTATA =＆＃39; FOR-DDT＆＃39;意思是我只在更新时才更新数据文档类型是交货单（＆＃39; FOR-DDT＆＃39;）。

我设法创建了SELECT查询，它为我提供了我需要更新的数据，但我无法＆＃34;转换＆＃34;这个查询进入UPDATE因为我缺乏SQL语言的经验。这是SELECT查询

SELECT do11_doctestata.do11_docum_mg36, 
   do11_doctestata.do11_datadoc, 
   do11_doctestata.do11_numdoc, 
   do11_doctestata.do11_sezdoc, 
   do33_doccorporif.do33_numnsdoc, 
   do30_doccorpo.do30_codart_mg66, 
   do30_doccorpo.do30_qta1, 
   do30_doccorpo.do30_prezzo1, 
   do30_doccorpo.do30_prezzo1iva, 
   do30_doccorpo.do30_importo, 
   do30_doccorpo.do30_importoiva, 
   do30_doccorpo.do30_impnetscp 
FROM   do11_doctestata 
   INNER JOIN do33_doccorporif 
           ON do11_doctestata.do11_numdoc = do33_doccorporif.do33_numnsdoc 
   INNER JOIN do30_doccorpo 
           ON do11_doctestata.do11_ditta_cg18 = 
              do30_doccorpo.do30_ditta_cg18 
              AND do11_doctestata.do11_numreg_co99 = 
                  do30_doccorpo.do30_numreg_co99 
WHERE  ( do11_doctestata.do11_docum_mg36 = 'FOR-DDT' )

和here是结果的示例。突出显示的行是我需要更新的典型行，但仅当DO11_NUMDOC和DO33_NUMNSDOC的数量匹配时

编辑：仍然坚持这个问题编辑：使用以下代码：

MERGE INTO DO30_DOCCORPO A
    USING DO30_DOCCORPO_TEMP B
        ON A.DO30_PROGRIGA = B.DO30_PROGRIGA
        AND A.DO30_NUMREG_CO99 = B.DO30_NUMREG_CO99
        AND A.DO30_DITTA_CG18 = B.DO30_DITTA_CG18
        AND A.DO30_CAUSMAG_MG51 = '9999'
WHEN MATCHED THEN
    UPDATE
        SET DO30_PREZZO1 = B.DO30_PREZZO1,
            DO30_PREZZO1IVA = B.DO30_PREZZO1IVA,
            DO30_IMPORTO = B.DO30_IMPORTO,
            DO30_IMPORTOIVA = B.DO30_IMPORTOIVA,
            DO30_IMPNETSCP = B.DO30_IMPNETSCP;

我设法让Management Studio做点什么。事实上，在执行之后，它说，＆＃34;行影响：1＆＃34;但还有一个问题：行

AND A.DO30_CAUSMAG_MG51 = '9999' should update WHERE DO30_CAUSMAG_MG51 = '100'

因此，当值为＆＃39; 9999＆＃39;但更新同一列具有＆＃39; 100＆＃39;作为价值

Answer 1

这是你需要的吗？

UPDATE DO30_DOCCORPO
SET  DO30_DOCCORPO.do30_importo=... 
    , ...
FROM   do11_doctestata 
   INNER JOIN do33_doccorporif 
           ON do11_doctestata.do11_numdoc = do33_doccorporif.do33_numnsdoc 
   INNER JOIN do30_doccorpo 
           ON do11_doctestata.do11_ditta_cg18 = 
              do30_doccorpo.do30_ditta_cg18 
          AND do11_doctestata.do11_numreg_co99 =do30_doccorpo.do30_numreg_co99 
WHERE  ( do11_doctestata.do11_docum_mg36 = 'FOR-DDT' )

评论后编辑：现在怎么样？

更新同一表中的记录，搜索另一个表中的常见记录

1 个答案: