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Getting Percentage Report From Table Data
Posted on 2013-06-06
I have a table and it has information about training taken:
Joe Blow Training 1 Pass
Joe Blow Training 2 Fail
Joe Blow Training 3 Pass
Jane Doe Training 2 Pass
Jane Doe Training 3 Fail
From that data, I want to create a table that just has percentages like:
Joe Blow Passed 66% Failed 33%
Jane Doe Passed 50% Failed 50%
Is there a way to do that from a second query against the first query?
I prefer a SQL query over a stored procedure if possible.
thanks!
Joe Blow Training 1 Pass
Joe Blow Training 2 Fail
Joe Blow Training 3 Pass
Jane Doe Training 2 Pass
Jane Doe Training 3 Fail
From that data, I want to create a table that just has percentages like:
Joe Blow Passed 66% Failed 33%
Jane Doe Passed 50% Failed 50%
Is there a way to do that from a second query against the first query?
I prefer a SQL query over a stored procedure if possible.
thanks!
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10 Comments
Active today
Give this a whirl... (with test script)
DROP TABLE #tmp
GO
CREATE TABLE #tmp (name varchar(10), training varchar(10), score varchar(10))
INSERT INTO #tmp (name, training, score)
VALUES
('Joe Blow', 'Training 1', 'Pass'),
('Joe Blow', 'Training 2', 'Fail'),
('Joe Blow', 'Training 3', 'Pass'),
('Jane Doe', 'Training 2', 'Pass'),
('Jane Doe', 'Training 3', 'Fail')
SELECT name, 'Passed ' + CAST(pass_count / CAST(total as decimal(5,2)) * 100 as varchar(10)) + '%'
FROM (
SELECT name, SUM(CASE score WHEN 'Pass' THEN 1 WHEN 'Fail' THEN 0 END) as pass_count, COUNT(score) as total
FROM #tmp
GROUP BY name) a
DROP TABLE #tmp
GO
CREATE TABLE #tmp (name varchar(10), training varchar(10), score varchar(10))
INSERT INTO #tmp (name, training, score)
VALUES
('Joe Blow', 'Training 1', 'Pass'),
('Joe Blow', 'Training 2', 'Fail'),
('Joe Blow', 'Training 3', 'Pass'),
('Jane Doe', 'Training 2', 'Pass'),
('Jane Doe', 'Training 3', 'Fail')
SELECT name, 'Passed ' + CAST(pass_count / CAST(total as decimal(5,2)) * 100 as varchar(10)) + '%'
FROM (
SELECT name, SUM(CASE score WHEN 'Pass' THEN 1 WHEN 'Fail' THEN 0 END) as pass_count, COUNT(score) as total
FROM #tmp
GROUP BY name) a
Active today
... cleaner ...
DROP TABLE #tmp
GO
CREATE TABLE #tmp (name varchar(10), training varchar(10), score varchar(10))
INSERT INTO #tmp (name, training, score)
VALUES
('Joe Blow', 'Training 1', 'Pass'),
('Joe Blow', 'Training 2', 'Fail'),
('Joe Blow', 'Training 3', 'Pass'),
('Jane Doe', 'Training 2', 'Pass'),
('Jane Doe', 'Training 3', 'Fail')
SELECT
name,
'Passed ' + CAST(CAST(pass_count / CAST(total as decimal(3,0)) * 100 as decimal(5,2)) as varchar(10)) + '%' as passed_pct,
'Failed ' + CAST(CAST((1-pass_count / CAST(total as decimal(3,0))) * 100 as decimal(5,2)) as varchar(10)) + '%' as failed_pct
FROM (
SELECT name, SUM(CASE score WHEN 'Pass' THEN 1 WHEN 'Fail' THEN 0 END) as pass_count, COUNT(score) as total
FROM #tmp
GROUP BY name) a
DROP TABLE #tmp
GO
CREATE TABLE #tmp (name varchar(10), training varchar(10), score varchar(10))
INSERT INTO #tmp (name, training, score)
VALUES
('Joe Blow', 'Training 1', 'Pass'),
('Joe Blow', 'Training 2', 'Fail'),
('Joe Blow', 'Training 3', 'Pass'),
('Jane Doe', 'Training 2', 'Pass'),
('Jane Doe', 'Training 3', 'Fail')
SELECT
name,
'Passed ' + CAST(CAST(pass_count / CAST(total as decimal(3,0)) * 100 as decimal(5,2)) as varchar(10)) + '%' as passed_pct,
'Failed ' + CAST(CAST((1-pass_count / CAST(total as decimal(3,0))) * 100 as decimal(5,2)) as varchar(10)) + '%' as failed_pct
FROM (
SELECT name, SUM(CASE score WHEN 'Pass' THEN 1 WHEN 'Fail' THEN 0 END) as pass_count, COUNT(score) as total
FROM #tmp
GROUP BY name) a
Active today
>>Is there a way to do that from a second query against the first query?
what first query?
what first query?
Active today
Yes, I will award points when I've tried it and confirmed I have no further questions about it.
Active today
Okay, jim, thanks. it's close. But I am not going to be inserting into a table. I will be creating a select query that creates the data that is in :
INSERT INTO #tmp (name, training, score)
So I need it to be something more like:
See my FROM line where I use a select clause.
How do I do that?
thanks!
INSERT INTO #tmp (name, training, score)
So I need it to be something more like:
SELECT name, 'Passed ' + CAST(pass_count / CAST(total as decimal(5,2)) * 100 as varchar(10)) + '%'
FROM (
SELECT name, SUM(CASE score WHEN 'Pass' THEN 1 WHEN 'Fail' THEN 0 END) as pass_count, COUNT(score) as total
FROM (Select name, training, score from trainingtable)
GROUP BY name) a
See my FROM line where I use a select clause.
How do I do that?
thanks!
Active today
oh shucks. nevermind. let me ask a new question about that after I figure out what I want to ask. thanks!
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