SQL選擇1和表2列WHERE COLUMN1 LIKE COLUMN2

Question

嗨，大家好我是新來這裏SQL是我的表

我只是想選擇是一樣的所有值。

輸出示例：

AA AA U 
BB BB U 
DD DD 

Answer 1

SQL小提琴： - http://sqlfiddle.com/#!6/c4564/7

SELECT symbol, 
      comp 
     FROM table0 
    WHERE CHARINDEX(symbol,comp) > 0 
UNION ALL 
    SELECT a.symbol AS symbol, 
      b.comp AS comp 
     FROM table0 a, table0 b 
     WHERE a.symbol = b.comp 
    ; 

Answer 2

試試這個：

SELECT charindex.symbol, (SELECT comp FROM charindex AS C2 WHERE LEFT(c2.comp,2) = charindex.symbol) AS Comp2 
    FROM charindex 
    WHERE ((((SELECT comp FROM charindex AS C2 WHERE LEFT(c2.comp,2) = charindex.symbol))<>""));