Split single column into two based on condition.

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Hi I have some values in list like

unit quantity datasource
1      10     manual
1      20     system

I want to show it as

unit manual_quantity  system_quantity 
1     10               20

How to do this ?

What I have tried:

Can Union server this ?

SQL

SELECT WITH DATA SOURCE MANUAL 
UNION 
SELECT WITH DATA SOURCE SYSTEM

but then how can I be sure they belong to same Unit.

else Self join ?

Posted 15-Jun-16 6:33am

AlwzLearning

Updated 16-Jun-16 2:31am

Maciej Los

v2

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Maciej Los · Accepted Answer · 2016-06-15T06:51:00

Seems, you want to pivot data...

There's 2 ways to achieve that using SQL:
1)

SQL

SELECT unit, SUM(CASE WHEN datasource = 'manual' THEN quantity ELSE 0 END) AS manual_quantity,
             SUM(CASE WHEN datasource = 'system' THEN quantity ELSE 0 END) AS system_quantity
FROM table1 
GROUP BY unit

2)

SQL

SELECT unit, [manual], [system]
FROM (
    SELECT *
    FROM table1
) AS DT
PIVOT(SUM(quantity) FOR datasource IN([manual], [system])) AS pt

kotiraavi · Accepted Answer · 2016-06-16T02:31:00

Solution 2

You can also try below query , its almost similar to above one but derived table is not required

SQL

Select Unit,Manual AS Manual_Quantity,System AS System_Quantity
FROM #TEMP 
PIVOT
(
SUM(quantity) FOR Datasource IN (Manual,[System])
) AS A

Posted 16-Jun-16 2:31am

kotiraavi

Comments

Maciej Los 18-Jun-16 5:01am

Good point! A 5!