update media_instance set location=replace(location,'v.','') where location like '%/0/v.%'
For more complex search/replace operations, 8.1 provides an interesting function, named 'regexp_replace'. It probably goes unnoticed because although there is a small reference in the manual in section 'E.1.3.6. Data Type and Function Changes' (http://www.postgresql.org/docs/8.1/interactive/release.html#RELEASE-8-1) and a description in section '9.7.3 POSIX Regular expressions' (http://www.postgresql.org/docs/8.1/interactive/functions-matching.html), it isn't mentioned in section '9.4. String Functions and Operators' (http://www.postgresql.org/docs/8.1/interactive/functions-string.html).
Hélder M. Vieira ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
