将行转换为多列 SQL Server

Question

I have a table with multiple rows that needs transposed to one row with multiple columns. The order in which the items are listed on my current table matters for ranking purposes, so I need them to stay in order when they are transposed into columns

Thanks in advance

Answer 1

You can use row_number() & do conditional aggregation :

SELECT individuaid, 
       MAX(CASE WHEN seq = 1 THEN item_no END) item_no_1,
       MAX(CASE WHEN seq = 1 THEN HL2_CODE END) HL_2_1,
       . . . . 
FROM (SELECT t.*,
            ROW_NUMBER() OVER (PARTITION BY individuaid ORDER BY item_no) AS seq
      FROM table t
     ) T
GROUP BY individuaid;