1.In contrast to... ORDER BY PRIMARY KEY,ORDER BY f1 ... fnis not automatically supported by a (sorted)index. Without an index, you must sort the result set at runtime. Because of the SAP architecture, this should not be performed on the database server, but on the applications serve...
SAP-ABAPABAPSAP开发技术 ORDERBYclause Variants: 1...ORDERBYPRIMARYKEY 2...ORDERBYf1...fn 3...ORDERBY(itab) Effect OrderstherecordsinaSELECTstatement.WithouttheORDER-BYclause,theorderinwhich theselectedlinesaresuppliedisundefined.ThismeansthattwosimilarSELECTstatements mayproducelinesinadifferentorder....
fn. Notes Performance: In contrast to ... ORDER BY PRIMARY KEY, ORDER BY f1 ... fn is not automatically supported by a (sorted) index. Without an index, you must sort the result set at runtime. Because of the SAP architecture, this should not be performed on the database server, ...
SAP NetWeaver AS ABAP Release 751, ©Copyright 2017 SAP AG. All rights reserved. Syntax ... ORDER BY{{PRIMARY KEY} |{{col1|a1}[ASCENDING|DESCENDING], {col2|a2}[ASCENDING|DESCENDING], ...} |(column_syntax)}... Alternatives:
使用ORDER BY删除数据 写在最后的话 前言 GROUP BY语句,HAVING语句以及ORDER BY语句在SAP ABAP中起到了关键的作用。通过上述语句可以实现对数据的分组,条件限定,排序等等,可以更加有效地帮助我们从数据库表中取到想要的数据,跟着本文的脚步,一起学习吧!
order by 命令是在数据库服务器上执行的,而 sort 语句是在应用服务器上执行的。因此,与其在select语句中使用order by命令,不如将数据先读取到内表中然后使用sort命令来将结果排序,因为应用服务器上的执行速度要比数据库服务器快。 分类:ABAP 好文要顶关注我收藏该文微信分享 ...
SAP ABAP 性能优化技巧 — 使用 “for all entries” 2009-08-03 19:30 −在select语句后面的where附加项中可以使用左关联,这会极大的提高程序速度,但同时也有一些局限,如下: 重复项会被从结果数据集中自动删除,因此要注意在select语句中需要给出详细的唯一关键字组合。 如果 For All Entries IN 字段修饰的内...
I want to know whether I have to use ORDER BY PRIMARY KEY or ORDER BY <FIELDS in SELECT List> Thanks Pawan Akella abap development on hana Reply 1 ACCEPTED SOLUTION matt Active Contributor 2017 Jun 21 1:12 PM 4 Kudos 4,093 SAP Managed Tags: ABAP Development, ABAP Testin...
在 SAP ABAP 事物码 SEGW 里创建 SAP OData 项目 里创建的 OData 模型,在 book_name 和 author_name 这两个字段的 sort 属性打上了勾,意思是这两个属性需要支持 OData 标准协议的 $orderby 操作即排序操作。 为了更清楚的看到我们的图书管理 OData 服务,在支持了 $orderby 操作之后的运行时效果,我们再往...
SAP-ABAPABAPSAP开发技术 ORDERBYclause Variants: 1...ORDERBYPRIMARYKEY 2...ORDERBYf1...fn 3...ORDERBY(itab) Effect OrderstherecordsinaSELECTstatement.WithouttheORDER-BYclause,theorderinwhich theselectedlinesaresuppliedisundefined.ThismeansthattwosimilarSELECTstatements mayproducelinesinadifferentorder....