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Editorial Team
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Asked: 2026-05-17T19:02:12+00:00

I’ve got a table in database that looks like this: CustomerId Attribute Value ================================

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I’ve got a table in database that looks like this:

CustomerId    Attribute    Value
================================
30            Name         John
30            Surname      Smith
30            Phone        555123456

to make some use of the data I need to make it look sth. like this:

CustomerId    Name    Surname    Phone
======================================
30            John    Smith      555123456

I know I can create stored procedure or table-valued function that will do it for me, but I’m wondering what would be the best choice here? Maybe I can do it with some clever sql select query only?

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1 Answer

  1. Editorial Team

    If this is SQL Server 2005 or later, you can use PIVOT:

    with Customers (CustomerId, Attribute, Value)
as
(
    select 30, 'Name', 'John'
    union
    select 30, 'Surname', 'Smith'
    union
    select 30, 'Phone', '551123456'
    union
    select 40, 'Name', 'Mary'
    union
    select 40, 'Surname', 'Johnson'
    union
    select 40, 'Phone', '9991111234'
)
select CustomerId, Name, Surname, Phone
from Customers
pivot
(
    min(Value)
    for Attribute in (Name, Surname, Phone)
) as PivotTable

    Or a solution that does not use PIVOT:

    /* with cte defined as above */
select CustomerId, 
    max(case Attribute when 'Name' then Value else '' end) Name,
    max(case Attribute when 'Surname' then Value else '' end) Surname,
    max(case Attribute when 'Phone' then Value else '' end) Phone
from Customers
group by CustomerId
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