How to make one column fixed? - sql

Question

There is one scheme and different items inside it, so the scenario is that if user send SchemeID to the procedure then it should return the SchemeName(once) and all items inside a scheme i.e. DescriptionOfitem, Quantity, Rate, Amount... in this format
SchemeName DescriptionOfItems Quantity Unit Rate Amount
Scheme01 Bulbs 2 M2 200 400
Titles 10 M3 300 3000
SolarPanels 2 M2 1000 2000
Bricks 50 M9 50 2500
Total 7900
My try, it works but it also repeats the SchemeName for each row and can't find total
Select
Schemes.SchemeName,
ContractorsWorkDetails.ContractorsWorkDetailsItemDescription,
ContractorsWorkDetails.ContractorsWorkDetailsUnit,
ContractorsWorkDetails.ContractorsWorkDetailsItemQuantity,
ontractorsWorkDetails.ContractorsWorkDetailsItemRate,
ContractorsWorkDetails.ContractorsWorkDetailsAmount
From ContractorsWorkDetails
Inner Join Schemes
ON Schemes.pk_Schemes_SchemeID= ContractorsWorkDetails.fk_Schemes_ContractorsWorkDetails_SchemeID
Where ContractorsWorkDetails.fk_Schemes_ContractorsWorkDetails_SchemeID= 2
Update:
I tested the query as suggested below but it gives this kinda result

Answer 1

You can get the total using grouping sets. I would advise you to keep the schema name on each row. If you want it filtered out on certain rows, then do that at the application layer.
Now, having said that, I think this will do what you want in SQL:
Select (case when GROUPING(cwd.ContractorsWorkDetailsItemDescription) = 0
then 'Total'
when row_number() over (partition by s.SchemeName
order by cwd.ContractorsWorkDetailsItemDescription
) = 1
then s.SchemeName else ''
end) as SchemeName,
cwd.ContractorsWorkDetailsItemDescription,
cwd.ContractorsWorkDetailsUnit,
cwd.ContractorsWorkDetailsItemQuantity,
cwd.ContractorsWorkDetailsItemRate,
SUM(cwd.ContractorsWorkDetailsAmount) as ContractorsWorkDetailsAmount
From ContractorsWorkDetails cwd Inner Join
Schemes s
ON s.pk_Schemes_SchemeID = cwd.fk_Schemes_ContractorsWorkDetails_SchemeID
Where cwd.fk_Schemes_ContractorsWorkDetails_SchemeID = 2
group by GROUPING SETS ((s.SchemeName,
cwd.ContractorsWorkDetailsItemDescription,
cwd.ContractorsWorkDetailsUnit,
cwd.ContractorsWorkDetailsItemQuantity,
cwd.ContractorsWorkDetailsItemRate
), s.SchemeName)
Order By GROUPING(cwd.ContractorsWorkDetailsItemDescription),
s.SchemeName, cwd.ContractorsWorkDetailsItemDescription;
The reason you don't want to do this in SQL is because the result set no longer has a relational structure: the ordering of the rows is important.