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Home » Boards » Stylus Studio Developer Network » Stylus Studio Technical Forum » ddtek:sql-delete and ddtek:sql-insert in the same XQuery ?
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stig perssonSubject: ddtek:sql-delete and ddtek:sql-insert in the same XQuery ?
Author: stig persson
Date: 02 Oct 2007 08:28 AM
Is it possible to have both a ddtek:sql-delete and
a ddtek:sql-insert in the same XQuery ?

If yes, what is the syntax ?

//Stig
Postnext
Ivan PedruzziSubject: ddtek:sql-delete and ddtek:sql-insert in the same XQuery ?
Author: Ivan Pedruzzi
Date: 02 Oct 2007 09:32 AM

Yes it's possible. If you explain what kind of logic you would like to express we will show you how.


Ivan Pedruzzi
Stylus Studio Team
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Minollo I.Subject: ddtek:sql-delete and ddtek:sql-insert in the same XQuery ?
Author: Minollo I.
Date: 02 Oct 2007 09:34 AM
It is possible to insert a row a delete *pre-existing* rows; you cannot delete the same row that you just inserted, as the underlying RDBMS changes become visible only when the XQuery execution is complete. If you need to do that, you'll have to split the logic in two separate XQueries.

If you just want to use sql-insert and sql-delete in the same XQuery, there is nothing strange syntactically speaking:
ddtek:sql-insert("table","name","pincopallo","age",99),
ddtek:sql-delete(collection("table")/table[name="evaristo"])

(inserts a new "pincopallo" row, and deletes any "evaristo" row).
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stig perssonSubject: ddtek:sql-delete and ddtek:sql-insert in the same XQuery ?
Author: stig persson
Date: 02 Oct 2007 09:51 AM
Thank's for the tip ! It worked !

//Stig
   
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