Synchronizing Two Custom Z Tables Using Abap Program

Question

Hi,
    My requirement is Synchronizing two custom z tables using abap program me.
I have vendors in two tables, i have to select the common vendors from first which are existing in second  table also.
In first table each vendor can have more than one supplier types in one field only. In second table these supplier types are divided into
different fields.
     My requirement is I have to check supplier types in first table and i have to pass X to corresponding supplier types in second table vendor.
I have to pass X value for each depending in Second table depending upon supplier type in first table.
. How to do it can any one suggest with code.
Thanks in Advance,
Vivek
<subject edited by moderator>
Message was edited by: Manish Kumar

Answer 1

Hi,
Imho, you need to get (meaning, extract into separate fields) the different supplier types from Table1 first. Your key for Table1 is the vendor no, which is also the key in Table2 (or the key for Table2 is Vendor no & Type).
For better performance, better select multiple/all required entries from Table1 instead of doing a select endselect.
Depending on the format of the vendortypes in Table1, put them in a new itab (for our purpose named Table1New where vendor no & type are the only 2 fields. For example, if the type length is fixed to 2 chars, or divided by space,... use your coding accordingly.
Next step is to select all vendor no's in Table2 which you have selected in Table1. If in Table2, the vendor no is the only key (and the all vendor types are filled in a single record), then loop check the vendor types from Table1New against the types in Table2.
If the key of Table2 is vendor no & vendor type, then do a read table for the key.
The logic in pseudo-code:
Select from Table1 into table. If you'd like to limit the selection size, add package size statement.
     extract the vendor types in to itab Table1New.
     Select the vendor & types from Table2 by using the for all entries option (better performance).
     loop at Table1New
          check in Table2:
               if the unique key is vendor no: check all fields for the vendor type from Table1New
               if the unique key combo is vendor no & type: check by using a read table.
          If not found => add entry to Table2
     endloop.
endselect Table1 (when using package size)
I guess the most difficult step is to extract the types from Table1 into separate fields, all the rest seems straight forward. Please keep in mind the itab type definitions for a better performance.
Good luck!
Best regards,
Zhou