取数据一般都会用到多个表,inner join是非常常用的操作,但因为比较耗数据库资源,所以很多时间不推荐。 大家也知道,SAP这东西,应用服务器可以扩展为多个,但数据库服务器只有一个,所以必须少消耗DB资源。 据boss说,一般多对多或关联很多表(例如3个以上)时就不用inner join(前者是因为难搞清关系,不太清晰),应改...
inner join 前提是两个表有相同的Key可作为关联，比如 EKKO&EKPO ->EKKO INNER JOIN EKPO ON EKKO~EBELN = EKPO~EBELN.另外：BKPF&BSEG虽然有共同的Key，但是SAP不允许用Inner Join去读取它们，可能是考虑到这两个表太大了吧。当两个表不能用Inner Join的时候，用 for all entries in T_TEMP:1...
To bo honest, it seems to me that a lot of the "newer" ABAP coders always go for FOR ALL ENTRIES but I wanted to know - is there a reason or do they all just cut and paste off SDN?! Are they all just scared of complex inner joins?! What would you all make of this Select ...
ABAP:for all entries in 语句 2017-03-10 14:19 −在ABAP开发中,对于不能使用join的聚集表或者需要使用SELECT 的内表,我们一般使用for all entries in 语句将该表与内表串联,查询出需要的数据,例如: BSEG聚集表为例,如下: SELECT bseg~kunnr bseg~lifnr bseg~belnr INT... ...
ABAP Development Hi Expert, Could you please help me in this inner join , Inner join is performance wise is not good so i want to replace instated of inner join for all entries. But when i am checking records of internal table there is difference. in inner join i am getting 11 records...
Solved: Hi all, Lets say i want to select data from 2 database tables db1 and db2. I have three options : 1) I use inner join on two database tables and select data 2) I
FOR ALL ENTRIES IN it_mard WHERE matnr = it_mard-matnr AND spras = 'E'. SELECT matnr ersda ernam laeda mtart matkl meins FROM mara INTO TABLE it_mara FOR ALL ENTRIES IN it_makt WHERE matnr = it_makt-matnr. LOOP AT it_makt INTO wa_makt. ...
// Characterize the usage pattern of all hostpools in the current Log Analytics scope WVDConnections | where State == "Connected" | project ResourceAlias, CorrelationId, StartTime=TimeGenerated, _ResourceId | join kind = leftouter ( WVDConnections | where State == "Completed" | project EndTim...
let callClientIds = materialize(ACSCallClientOperations | where ParticipantId in ((callIds | project ParticipantId)) or CallId in ((callIds | project CorrelationId)) | distinct ClientInstanceId, ParticipantId, CallId); // let allOperations = materialize(callClientIds | join kind=right...
Union / Inner Join / Left Outer Join Bei einemUnionwerden die Daten mehrerer Provider zusammengefasst, wodurch die Vereinigungsmenge der beteiligten Daten gebildet wird. Es werden also alle Werte zusammengeführt. Bei einemJoinwerden zwei Tabellen unter b...