/SQL/SQL Server dynamic pivot unknown number of columns

SQL Server dynamic pivot unknown number of columns

-   DECLARE @v_query  VARCHAR(8000) -- main query
    DECLARE @v_columns VARCHAR(8000) -- columns

    SET @v_columns =''

    -- Get string columns
    SELECT @v_columns += '[' + CONVERT(VARCHAR, Item) +'],' FROM (SELECT DISTINCT Item FROM #temp2) AS temp

    -- Delete the last comma
    SET @v_columns = LEFT(@v_columns,LEN(@v_columns)-1)


    -- Main query

    SET @v_query = 'SELECT Name, ' + @v_columns +' FROM
                    (
                        SELECT Name, Item FROM #temp2
                    ) T             
                    PIVOT
                    (
                        Count(Item)
                        FOR Item IN ('+ @v_columns +')
                    ) PVT'
    EXEC (@v_query)

Source: stackoverflow.com

Similar codes

0 vote129 views1 answer
Sql count null as 0
SQL
3 votes132 views1 answer
Laravel paginate raw sql
SQL
0 vote138 views1 answer
Oracle select partition
SQL
5 votes127 views1 answer
List foreign key oracle
SQL
-1 vote129 views1 answer
Ssms connect with connection string
SQL
2 votes140 views2 answers
Mysql limit
SQL
18 votes128 views3 answers
Mysql current date
SQL
0 vote149 views1 answer
SQL Server date literal
SQL
0 vote134 views1 answer
Incorrect string value: mysql
SQL
0 vote130 views1 answer
Sql server cannot create database diagram
SQL