Combining multiple data points into a single data point. This usually is used in reference to SQL and usually to an aggregate function of some sort.

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postgresql view [duplicate]

Possible Duplicate: postgresql view with max min with id I have the following table: CREATE TABLE trans ( id SERIAL PRIMARY KEY, trans_date date, trans_time time ); I ...
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Sum of two columns from pivot

I have the following query: DECLARE @columns NVARCHAR(MAX),@columns1 NVARCHAR(MAX), @sql NVARCHAR(MAX),@columns2 NVARCHAR(MAX),@columns3 NVARCHAR(MAX); SET @columns = '1,2,3,4'; SELECT @columns1 = ...
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How do I get to this query? SQL Server

I have a database schema : member(memb_no, name, age) book(isbn, title, authors, publisher) borrowed(memb_no, isbn, date) This is the question: For each publisher, print the names of ...