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author's profile photo Shabareesh paluru
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Shabareesh paluru

DB hints select query

Posted on Aug 24, 2016 at 10:52 AM 660 Views

HI SAP GURUs,

I have a DB HINT select query & I have to change this into OPEN SQL.

But first am not understanding below DB hint query itself. SO request you to please guide me on below.

SELECT FIELD1

FIELD2

FIELD3

FROM ABC

INTO TABLE ITAB

WHERE FIELD1 = VALUE

%_HINTS ORACLE 'LEADING (ABC.T1) USE_NL (ABC.T2)'.

Thanks,

Shabareesh

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2 Answers

  • author's profile photo Horst Keller
    Horst Keller
    Posted on Aug 24, 2016 at 11:02 AM
    1

    I don't understand your question.

    What do you mean with

    I have to change this into OPEN SQL ?

    The above statement is already Open SQL.

    The addition "%_HINTS ORACLE" is an addition in Open SQL.

    After the addition, you enter an Oracle specific hint.

    You can enter more than one addition %_HINTS for the same and for other DBs.

    There are no OPEN SQL specific hints (at least no documented ones that you can use).

    See note 129385.

    Horst

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  • author's profile photo Raymond Giuseppi
    Raymond Giuseppi
    Posted on Aug 24, 2016 at 11:27 AM
    1

    If you actually want to understand the Oracle hint, I suggest you first search/read online Oracle documentation (e.g. Understanding Optimizer Hints and Using Optimizer Hints.)

    • Else what do you intend to do? This is already an Open SQL statement (as Horst wrote) , remove the hint, change database for the hint, switch to native sql?
    • Are your Oracle statistics up to date?
    • Could you provide the real statement, LEADING and USE_NL are related to JOIN so your code make no sense for me?

    Regards,

    Raymond

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