请告诉我SQL代码

本文介绍了请告诉我SQL代码的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我有3张桌子

表1
ID名称dob
--- ---- ----
101 ABc 10/march/86
102 XYZ 11/三月/1986

表2

ID HobbyID
--- --------
101 1
101 2
102 1
102 2

表3
HobbyID HobbyName
------- ---------
1音乐
2个游戏

因此，请告诉我该查询，以便输出如下所示:

ID名称DOB HobbyName
--- ----- ------ ----------
101 ABC 10/march/86音乐，游戏
102 Xyz 11/march1986 Music，Games

i have 3 tables

table 1
ID Name dob
--- ---- ----
101 ABc 10/march/86
102 XYZ 11/march/1986

Table 2

ID HobbyID
--- --------
101 1
101 2
102 1
102 2

Table 3
HobbyID HobbyName
------- ---------
1 Music
2 Games

So please tell me the query so the output comes like this:

ID Name DOB HobbyName
--- ----- ------ ----------
101 ABC 10/march/86 Music,Games
102 Xyz 11/march1986 Music,Games

推荐答案

SELECT T1.ID, T1.NAME, T1.DOB, A.HOBBYNAME || ',' || B.HOBBYNAME
FROM (SELECT T2.ID, T3.HOBBYNAME
      FROM TABLE2 T2,
           TABLE3 T3
      WHERE T2.HOBBYID = T3.HOBBYID
      AND T2.HOBBYID = 1) A,
     (SELECT T2.ID, T3.HOBBYNAME
      FROM TABLE2 T2,
           TABLE3 T3
      WHERE T2.HOBBYID = T3.HOBBYID
      AND T2.HOBBYID = 2) B,
     TABLE1 T1
WHERE T1.ID = A.ID
AND T1.ID = B.ID
ORDER BY T1.ID

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