Question

我遇到了问题。目前我有三个表，第一个表是主表，如果第二个表中没有记录，也写它。但是如果第二个表中存在记录，那么从第三个表中显示＆＃34; dispo＆＃34;信息..

我想使用三个SAP表 - lagp，lqua和marc。我的目标是写下所有来自lagp的股票头寸。

2x LEFT JOIN不起作用：＆＃34;无法与＆＃34; B~MATNR＆＃34;进行比较。一个表可以与最多一个其他表联合使用LEFT OUTER JOIN。

结构：

TYPES:
  BEGIN OF t_work,
    lgnum TYPE lgnum,
    lgtyp TYPE lgtyp,
    lgpla TYPE lgpla,
    bdatu TYPE lagp_bdatu,
    matnr TYPE matnr,
    verme TYPE lqua_verme,
    meins TYPE meins,
    dispo TYPE dispo,
  END OF t_work.
DATA:
  lt_work TYPE TABLE OF t_work INITIAL SIZE 0,
  ls_work LIKE LINE OF lt_work.

和SQL命令：

SELECT a~lgnum a~lgtyp a~lgpla a~bdatu b~matnr b~verme b~meins c~dispo FROM lagp AS a
   LEFT JOIN lqua AS b ON a~lgnum = b~lgnum AND a~lgtyp = b~lgtyp AND a~lgpla = b~lgpla
  INNER JOIN marc AS c ON b~matnr = c~matnr AND b~werks = c~werks
  INTO TABLE lt_work
   WHERE a~lgnum IN so_lgnum
     AND a~lgtyp IN so_lgtyp
     AND a~skzua EQ space
     AND a~skzue EQ space.

但结果只有一个股票仓位 - http://i.stack.imgur.com/1sEEo.png

你能告诉我，SQL代码看起来怎么样？

谢谢

Answer 1

尝试：

SELECT a~lgnum, a~lgtyp, a~lgpla, a~bdatu, b~matnr, b~verme, b~meins, c~dispo 
   FROM lagp AS a
   LEFT JOIN ( lqua AS b 
               JOIN marc AS c ON b~matnr = c~matnr AND b~werks = c~werks )
          ON a~lgnum = b~lgnum AND a~lgtyp = b~lgtyp AND a~lgpla = b~lgpla 
  INTO TABLE @lt_work
   WHERE a~lgnum IN @so_lgnum
     AND a~lgtyp IN @so_lgtyp
     AND a~skzua EQ @space
     AND a~skzue EQ @space.

其他选项是将LQUA和MARC之间的连接放在视图中，并与视图进行外连接。或者在MARC上拆分选择并在循环使用LAGP和LQUA上的选择找到的数据时执行此操作。

Answer 2

我得到了很好的工作代码：

  SELECT ma~matnr ma~mtart ma~ernam ma~ersda ma~laeda
  de~maktx as maktx_de fr~maktx as maktx_fr it~maktx as maktx_it
  FROM mara as ma
  LEFT JOIN MAKT as de ON de~matnr = ma~matnr AND de~spras = 'DE'
  LEFT JOIN MAKT as fr ON fr~matnr = ma~matnr AND fr~spras = 'FR'
  LEFT JOIN MAKT as it ON it~matnr = ma~matnr AND it~spras = 'IT'
  INTO CORRESPONDING FIELDS OF TABLE g_it_material
  WHERE ma~ernam IN so_ERNAM
  AND ma~laeda IN so_LAEDA
  AND ma~matnr IN so_MATNR.

它工作正常。你怎么说多左连接？

无法加入三个表

2 个答案: