If you have the ability to use Window functions you can group (as necessary), order by last_update, and then use rank() to number each test run sequentially. Then you can limit the results to ( rank() <= 2 AND current_status = 'FAILED' ). David J. -----Original Message----- From: pgsql-general-owner@xxxxxxxxxxxxxx [mailto:pgsql-general-owner@xxxxxxxxxxxxxx] On Behalf Of Lonni J Friedman Sent: Wednesday, April 13, 2011 3:34 AM To: pgsql-general Subject: updating rows which have a common value forconsecutive dates Greetings, I have a table full of automated test data, which continuously has new unique data inserted: Column | Type | Modifiers ----------------+-----------------------------+------------------------- ----------------+-----------------------------+------------------------- ----------------+-----------------------------+----------- id | integer | not null default nextval('dbltests_id_seq'::regclass) testname | text | not null last_update | timestamp without time zone | not null default now() current_status | text | not null os | text | not null arch | text | not null build_type | text | not null branch | text | not null The 'testname' column contains many different tests, and each unique 'testname' has numerous different associated os,arch,build_type & branch values. For example, testname='foo' will run on os='Linux',arch='i686',build_type='debug',branch='t38', and also on os='Windows7',arch='x86_64',build_type='release',branch='r40', etc, and there will be many other different testname's with similar permutations of the os,arch,build_type & branch columns. So for example, there will also be testname='bar' or testname='omega' or testname='sigma' for the other assorted os,arch,build_type & branch permutations. The current_status column is either 'PASSED' or 'FAILED'. What I'm struggling with is how to put together a SQL query which shows me all instances of a given testname permutation (os,arch,build_type,branch) which has a current_status value of 'FAILED' for two or more most recent consecutive 'last_update' values. Suggestions welcome. thanks in advance! -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
