pivot columns to rows sql code example

Example 1: sql server pivot rows to columns

select Firstname, Amount, PostalCode, LastName, AccountNumber
from
(
  select value, columnname
  from yourtable
) d
pivot
(
  max(value)
  for columnname in (Firstname, Amount, PostalCode, LastName, AccountNumber)
) piv;

Example 2: sql pivot rows to columns

SELECT *        -- Total invoices per gender
FROM (
    SELECT invoice, gender
    FROM sales
) d
PIVOT (
    sum(invoice)
    FOR gender IN ('F' AS "Women", 'M' AS "Men")
);
-- Table Sales:
CREATE TABLE sales (
    gender VARCHAR2(1 BYTE),		-- 'F' or 'M'
    invoice NUMBER
);

Example 3: sql server pivot rows to columns

-- Dynamic Pivot with unknown number of columnnames

DECLARE @cols AS NVARCHAR(MAX),
    @query  AS NVARCHAR(MAX)

select @cols = STUFF((SELECT ',' + QUOTENAME(ColumnName) 
                    from yourtable
                    group by ColumnName, id
                    order by id
            FOR XML PATH(''), TYPE
            ).value('.', 'NVARCHAR(MAX)') 
        ,1,1,'')

set @query = N'SELECT ' + @cols + N' from 
             (
                select value, ColumnName
                from yourtable
            ) x
            pivot 
            (
                max(value)
                for ColumnName in (' + @cols + N')
            ) p '

exec sp_executesql @query;