December 2012
Intermediate to advanced
316 pages
6h 51m
English
Content preview from SAP ABAP Advanced CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Adding hints in SELECT clause
If there are many indexes that contain common fields (or for any other reason), the database optimizer cannot decide the right index to be used for a particular query, and then use a wrong index that may not be of optimal performance. From SAP Release 4.5, hints can be provided using the %_HINTS parameter. In this recipe, we will see the syntax for specifying HINTS within your SELECT clause in order for a particular index to be used by the database optimizer. We will see how the hints may be specified when the underlying database is MS SQL Server.
Getting ready
In this recipe, we will have a small program that runs a SELECT statement on the table ZST9_VBAK. We will use the index (Z12) that we created in the previous ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.