pgsql functions: get column headers; optional arguments

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От Mark
Тема pgsql functions: get column headers; optional arguments
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Msg-id 46CE9835.7060104@manngo.net
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Список pgsql-general
Hi. I hope this is the correct mailing list.

I am writing a function to extract data either from a table or a query and output it in xml. I have the logic down, but I cannot work out a few things.

1. How can I read the column headings from the returned data set? I have resorted to writing the same function in tcl in which I can work out how to do this, but what about pgsql? I can't use the system tables for this, since the data may not come from a table.

2. It it possible, either in tcl or pgsql, to have optional function arguments?

Thanks,

Mark
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Mark Simon

Manngo Net Pty Ltd

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