Question

Count of Rows in Multiple Subqueries to create "Dashboard" View

Asked by: propertytax

I am writing a number of queries against a record set with somewhat complex WHERE conditions, such that when all queries are written, every record should exist in one (and only one) of the various queries. As a cross-check against a master data list, I would like to create a "dashboard" query so that I can (hopefully somewhat simply) copy and paste my various queries into the "dashboard" query, whose only job is to give me the record (row) count of each of the queries as a column in my dashboard query.

I am not very experienced in writing sub-queries, and am not able to come up with the syntax to do this. In a sort of pseudo-code form, what I am hoping for is:

SELECT
     COUNT of rows in (My Complex Query 1 Here) AS Report_1_Count,
     COUNT of rows in (My Complex Query 2 Here) AS Report_2_Count,
     COUNT of rows in (My Complex Query 3 Here) AS Report_3_Count

yeah, I know that's nowhere close to SQL code but if I could write it out in proper SQL I'd probably not be posting here :-)

A bonus would be to be able to get the sum total of all the rows in each of the subqueries as a sort of grand total, but really what I need to do right now is just get the count of each of the subqueries. Thanks!

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Asked On
2009-11-03 at 12:43:14ID24868754
Tags

SQL

Topic

SQL Query Syntax

Participating Experts
1
Points
500
Comments
2

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Answers

 

by: lwadwellPosted on 2009-11-03 at 12:48:40ID: 25733425

Hi propertytax,

I suppose one way would be

SELECT r1_count, r2_count, r3_count, r1_count + r2_count + r3_count as tot_count
FROM
(select count(*) as r1_count from (your Complex Query 1 Here) as r1) as r1v,
(select count(*) as r2_count from (your Complex Query 2 Here) as r2) as r2v,
(select count(*) as r3_count from (your Complex Query 3 Here) as r3) as r3v

lwadwell

 

by: propertytaxPosted on 2009-11-03 at 12:58:06ID: 31649650

Beauty. Worked like a charm. I can promise I would NEVER have gotten that syntax nailed on my own. Thanks so much!

20120131-EE-VQP-002

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