/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 vote215 views1 answer
Regex mongoose
SQL
4 votes221 views5 answers
Primary key
SQL
0 vote225 views2 answers
Nested query
SQL
-1 vote222 views2 answers
First letter capital in mysql query
SQL
0 vote223 views2 answers
How to check if sqlite table exists in nodejs
SQL
0 vote198 views1 answer
Import sql mysql ubuntu
SQL
1 vote227 views1 answer
Sql where max date
SQL
1 vote220 views2 answers
Find nth highest salary of an employee
SQL
0 vote228 views1 answer
000webhost database values insert
SQL
0 vote219 views1 answer
Oracle array
SQL