> I think you will have to explain some more what you want to
> achieve. If you are looking for a value to use in a WHERE
> condition then there are several options, but an SQL manual
> would be a better starting point that PHP :)

PHP function implode is just an example of what I want.
As I said I want to join data from several rows (with only one column)
into one single string (separated with some delimiter).

For example if result of "select name from people" is:
John
Paul
Linda
...

The result I want is one string: "John, Paul, Linda".

Anzej