setval('myfunsequence', 0)

The subject statement does not work for automagically generated sequences (minvalue is 1 by default, it seems.) I need to reset a sequence to where nextval('myfunsequence') is 1, and the only way to do it (I think) is to setval('myfunsequence', 0).

I can just create this particular sequence with minvalue 0 start 1, but I am wondering what is the downside to this being the default? Alternatively, is there a way to make setval accept a value that is $start - $increment as seems to happen on creation?

Visual Aids Follow...

test=# create sequence myfunsequence;
CREATE
test=# select nextval('myfunsequence');
nextval
---------
1
(1 row)

test=# select nextval('myfunsequence');
nextval
---------
2
(1 row)

test=# select setval('myfunsequence',0);
ERROR: myfunsequence.setval: value 0 is out of bounds (1,9223372036854775807)
test=# select setval('myfunsequence',1);
setval
--------
1
(1 row)

test=# select nextval('myfunsequence');
nextval
---------
2
(1 row)

test=# drop sequence myfunsequence;
DROP
test=# create sequence myfunsequence minvalue 0 start 1;
CREATE
test=# select nextval('myfunsequence');
NOTICE: myfunsequence.nextval: sequence was re-created
nextval
---------
1
(1 row)

test=# select nextval('myfunsequence');
nextval
---------
2
(1 row)

test=# select setval('myfunsequence',0);
setval
--------
0
(1 row)

test=# select nextval('myfunsequence');
nextval
---------
1
(1 row)

Thanks!!

Ian Harding
Programmer/Analyst II
Tacoma-Pierce County Health Department
iharding(at)tpchd(dot)org
(253) 798-3549