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8.7

Grouping without aggregate function

Asked by sburck in Oracle Database, Delphi Programming, Delphi Database

I have a table which contains rows of data that look like this:

Row Number, Location ID, Location Name, Candidate ID, Candidate Name, Votes

The select I have now is:
select * from data_for_report order by cand_id, row_num

The table has data for a fixed number of locations, and the number of votes each candidate has for that location.

I need to produce a report which produces a line for each location with the number of votes each candidate received, and this I can feed into the report.

For example, the data might look like this (3 locations, a,b, and c) and 3 candidates (x,y and z) (I'll skipe the id's in the example, just use the names)

1 a x n1
2 b x n2
3 c x n3
4 a y n4
5 b y n5
6 c y n6
7 a z n7
8 b z n8
9 c z n9

And the report should look like this in the end
x y z
a n1 n4 n7
b n2 n5 n8
c n3 n6 n9

This might look like homework, it's not - I'm an embedded developer who has been given some database work that he's not trained or qualified for. The code in in Delphi 5, and the report is using Quickreports 3.

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20091111-EE-VQP-92 - Hierarchy / EE_QW_3_20080625

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Grouping without aggregate function

Asked by sburck in Oracle Database, Delphi Programming, Delphi Database

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