Case Statement
От | Tom Haddon |
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Тема | Case Statement |
Дата | |
Msg-id | NEBBIHDGCLBEJMPFAMLAOEHJCIAA.tom@betterhealthfoundation.org обсуждение исходный текст |
Ответ на | Re: UPDATE & LIMIT together? (Bruce Momjian <pgman@candle.pha.pa.us>) |
Ответы |
Re: Case Statement
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Список | pgsql-sql |
Hi Folks, I am having troubles with a case statement in that I want to have the query select only those records that match a particular case. Here's my query: SELECT agency_contact_info.id,organization,department,city,state,description_of_ser vices, CASE WHEN agency_contact_info.id > 0 THEN 0 ELSE 0 END + CASE WHEN agency_contact_info.languages_other_text ~ 'Mien' THEN 1 ELSE 0 END AS relevance FROM agency_contact_info WHERE (agency_contact_info.guideregion=1 AND list_online IS TRUE AND (agency_contact_info.id > 0 OR agency_contact_info.languages_other_text ~ 'Mien' )) ORDER BY relevance DESC, agency_contact_info.organization How do I add in the fact that I only want records where the CASE (as relevance) > 0? I've tried using it in the WHERE statement adding a HAVING statement and it doesn't like either. You will see a fair amount of redundancy in the statement above such as "CASE WHEN agency_contact_info.id > 0 THEN 0 ELSE 0 END" and "agency_contact_info.id > 0" - this is because it is being built dynamically, and it makes it easier to build the addition blocks of the statement. Thanks in advance, Tom _______________________________ Tom Haddon IT Director The Better Health Foundation 414 Thirteenth Street, Suite 450 Oakland, CA 94612 (510) 444-5096 www.betterhealthfoundation.org _______________________________
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