Tom, > I'm hoping to put together a query that generates a report on a table with > a large number of boolean fields. This report has to be able to adapt to > the number of fields in the table. Essentially, I want it to provide the > sum of TRUE values for each field for a given subset of the table. I've > got the query that returns the subset of the table (this is based on a > relationship with another table):
Sounds like you have schema problems. Is this a legacy database, or did you design it yourself? > > SELECT breast_cancer_resources.* > FROM breast_cancer_resources, agency_contact_info > WHERE breast_cancer_resources.id=agency_contact_info.id > AND agency_contact_info.guideregion=1 > AND agency_contact_info.list_online=TRUE > > But I'm not sure how to generate the sum for each column. Should I be > looking elsewhere than SQL to do this for me, such as php (this is for a > web-based report)? You cannot dynamically sum all columns through SQL. You would need to use a procedural language to loop through the columns and create sum clauses for each one. -- -Josh Berkus Aglio Database Solutions San Francisco ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster
