The following bug has been logged online:

Bug reference:      1127
Logged by:          Piotr Konieczny

Email address:      [EMAIL PROTECTED]

PostgreSQL version: 7.4

Operating system:   Linux 

Description:        ALTER SEQUENCE bug

Details: 

ALTER SEQUENCE doesn't work properly, when only first value has been readed 
from sequence: 

test=# create TABLE t (s serial, t text);
NOTICE:  CREATE TABLE will create implicit sequence "t_s_seq" for "serial" 
column "t.s" 
NOTICE:  CREATE TABLE will create implicit sequence "t_s_seq" for "serial" 
column "t.s" 
CREATE TABLE
test=# insert into t (t) VALUES ('1');
INSERT 17151 1
test=# select * from t;
 s | t
---+---
 1 | 1
(1 row)

test=# delete from t;
DELETE 1

test=# ALTER sequence t_s_seq restart 1;
ALTER SEQUENCE
test=# insert into t (t) VALUES ('1');
INSERT 17152 1
test=# select * from t;
 s | t
---+---
 2 | 1
(1 row)

test=# delete from t;
DELETE 1
test=# ALTER sequence t_s_seq restart 1;
ALTER SEQUENCE
test=# insert into t (t) VALUES ('1');
INSERT 17153 1
test=# select * from t;
 s | t
---+---
 1 | 1
(1 row)

test=#




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