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search help from two tables for single field

Posted on Jan 18, 2008 at 07:23 AM 768 Views

Hi

I have two tables zmes_h and znpo_h , these two tables are having same field mes_num . now I want create a search help for this field but i need to get values from two tables. here field mes_num contains different values in two tables.

please give me the solution its an urgent

thanks in advance

regards

sekhar.k

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  • author's profile photo Former Member
    Former Member
    Posted on Jan 18, 2008 at 07:29 AM
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    Hi,

    create help view(se54)

    Help views can be used as selection method in Search help.

    Help view is created if a view with outer join is needed as selection method of a search help.

    Help views are used exclusively for search helps.

    A conventional database view selects data from the database using an inner join.

    For a help view however, data is selected using a left outer join.

    Eg-> Suppose table SCARR (Airline master table) has AA – American airlines

    AB – Air Berlin

    AC- Air Canada as three entries.

    Table SPFLI (Flight schedule) has entries corresponding only to airlines AA (American airlines) and AB (Air Berlin).

    Now if a database view were to be used as a selection method for a search help for airlines, we would only get AA and AB as possible entries because the database view implements an inner join…….If however, we were to use a help view as the selection method here, we would get AA,AB and AC as possible entries because a help view would implement a left outer join.

    Restrictions for Help Views

    There are some restrictions for selecting the secondary tables of a maintenance view or help view. The secondary tables have to be in an N:1 dependency to the primary table or directly preceding secondary table. This ensures that there is at most one dependent record in each of the secondary tables for a data record in the primary table.

    Go thru this link plzz

    http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ecf9446011d189700000e8322d00/frameset.htm

    difference-between-help-view-and-search-help

    Regards

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