Repeating a field in a query region

I have a htmldb_item generated query region with an editable text field. In a after submit process, I want to take some action if the value of the text field has changed.
The only way I could think of to determine if the field changed was to fetch it twice from the database, once as a hidden field and then the real text field.
select ...
htmldb_item.hidden(1,(scalar query))||htmldb_item.text(2,(scalar query)
Then in my after submit process, I can compare g_f01(i) to g_f02(i).
But that "scalar query" in there is an expensive one and I want to avoid running it twice if possible.
Is there a better way to do this?
Thanks

Repost. Thanks.

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If you provide example data as a table, and DDL I'll take a look for you. Images are not useful to us at all.
Ex:
DECLARE @table TABLE (col1 INT, col2 VARCHAR(20))
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Don't forget to mark helpful posts, and answers. It helps others to find relevant posts to the same question.

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===========================================
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Patrick,
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Hi,
This link will be useful for your requirement.
Master Detail Page using Hide Show and Advanced Table inside Advanced Table - OracleArea51.com
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Please refer below link http://oraclearea51.com/oracle-technical-articles/oa-framework/oa-framework-beginners-guide/280-advance-search-page-without-using-query-bean.html
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Flavio,
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