逐行选择所有重复值

Question

我有桌子

Building    Stairs
A           Two
B.          Three
C.          Two

我需要输出

A,C.     Two
B.       Three

Answer 1

您可以这样做：

SELECT DISTINCT  STUFF((    SELECT ', ' + b.Building
            FROM #table b
            WHERE b.Stairs = a.Stairs               
            FOR XML PATH('') ), 1, 1, '' ) AS Building,
    Stairs
FROM #table a