Tip

How to get first value in a view

Here's a fix for a problem I ran across when I developed a news database. I needed to display the last news, as todays news even if they were old news. So I made a view categorized by date and the second column was the news titles. The problem was that I didn't know the date for the first value of the view. To solve this problem I did the following:
view:="newsview";
dbc:=@DbColumn("": "NoCache" ; @dbname;view;1);
newsdate:=@If(@IsError(dbc);"";dbc);
key:=@Subset(newsdate;1);
newslist:=@DbLookup("":"NoCache";@dbname;view;key;2);
@If(@IsError(newslist);"";newslist)

This was first published in March 2002

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