create function lastword(varchar) returns varchar as '
return [string range $1 [string last " " $1] end]
' language 'pltcl';
Ian Harding
Programmer/Analyst II
Tacoma-Pierce County Health Department
iharding@tpchd.org
(253) 798-3549
>>> Gregory Seidman <gss+pg@cs.brown.edu> 01/15/03 07:16AM >>>
Is there a function or composition of functions that will retrieve the last
word in a text field? I have a table of addresses with arbitrary text
for the first field (i.e. to whom it is addressed), and I'd like to do my
queries as something like this:
SELECT * from Addresses
WHERE state = 'CA'
ORDER BY lastword(addressee);
What I'm missing is the definition/name of the lastword function.
Note that I'm not expecting perfect results from this. There will be some
weirdness with certain addressees. Nonetheless, it is a reasonable
approach. My other option, which is what I'm doing now, is to have a "last"
column in the table and have my host language fill it on insertion. It's
workable, but it's redundant and overly complex from a data abstraction
point of view.
--Greg
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