Обсуждение: MySql week() method equivalent
| I have a bit of a problem replacing the week() method from mysql in some of my queries. The equivalent function for week($date) would be "extract week from $date". All good until I found a mysql query where the week function is called with the second parameter like this: select week(date,3). Based on mysql site, second parameter means that : "Week 1 is the first week with more than 3 days this year(for second parameter=3)". I made a couple of tests with some dates on both mysql and postgresql and noticed that "select week(date,3)" and extract(week from date) sometime returns different values. Anyone has any ideea for a workaround on this issue?? Thanks |
-----BEGIN PGP SIGNED MESSAGE----- Hash: RIPEMD160 > select week(date,3). Based on mysql site, second parameter means that > "Week 1 is the first week with more than 3 days this year(for second parameter=3)" There is nothing directly compatible in Postgres: we only deal with the ISO 8601 standard of a week. You would need to write your own function to emulate it completely. It might be worth checking some of the mysql compatibility projects to see if someone has already done so. - -- Greg Sabino Mullane greg@turnstep.com End Point Corporation http://www.endpoint.com/ PGP Key: 0x14964AC8 201011181015 http://biglumber.com/x/web?pk=2529DF6AB8F79407E94445B4BC9B906714964AC8 -----BEGIN PGP SIGNATURE----- iEYEAREDAAYFAkzlQzIACgkQvJuQZxSWSshYVQCg7+ROonN9D9NBYrDOAk0GEc2U IJcAoJvJfEBI2LNKovpMfegzwyVYh69v =kMe1 -----END PGP SIGNATURE-----