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Channel: SCN: Message List - For All Entries is NOT better than INNER JOIN in most cases
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Re: For All Entries is NOT better than INNER JOIN in most cases

Hello Matthew, the link (correctly) tells that minimizing the number of database transfers is even more important for HANA.Table buffering and SELECT FOR ALL ENTRIES are both ways achieve this.However,...

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Re: For All Entries is NOT better than INNER JOIN in most cases

I buffer data in internal tables. I never rely on appserver buffering. This was after running tests that showed internal table buffering was better performing. In my view it's also better programming,...

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Re: For All Entries is NOT better than INNER JOIN in most cases

Internal table performance with an appropriate key is of course better than table buffering. I have seen situations when even the first access to fill the application buffers became critical. In that...

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Re: For All Entries is NOT better than INNER JOIN in most cases

On usual cases I am agreeing with you, JOIN is to be preferred usually.However, there are some exceptional cases and situations, and they even do not go away with the use of HANA.

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Re: For All Entries is NOT better than INNER JOIN in most cases

That's why the title of the thread includes the words "Most Cases".

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Re: For All Entries is NOT better than INNER JOIN in most cases

I don't recall the details of which db tables were used. The hardware was linux/oracle. 3 or 4 years ago. The tests were conducted on a loaded and unloaded test system several times over different...

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Re: For All Entries is NOT better than INNER JOIN in most cases

Bumping again, since the topic sprang up once more.

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Re: For All Entries is NOT better than INNER JOIN in most cases

I don't know if it is good ABAP programming or not: But, long long time ago, I was facing very bad response time when using FAE. I had no option to use INNER JOIN because the internal table was...

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Re: For All Entries is NOT better than INNER JOIN in most cases

Bumping again as new people are coming on the board all the time and continue perpetuating the myth.

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Re: For All Entries is NOT better than INNER JOIN in most cases

Bumping to remind the community.

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