This yields a successful match since $1 in the /target pattern/ is replaced 
> by "123" from the first captured group in *source* and the resulting
> string, 
> "123 target text", matches the /target pattern/. 

> I would like to execute a query which for a given /source pattern/ and 
> /target pattern/ returns all rows from the *SEGMENT* table where *source* 
> matches the /source pattern/ and *target* matches the /target pattern/
> after 
> it has its references replaced with the actual captured groups. 

> I believe this is not possible since *regexp_replace* expects a string as 
> its /replacement/ argument which is not enough in this case. 



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GuL
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