1

私はこのSQLクエリを書き込もうとしています：

Select t1.tms_id, t1.tms_name, t1.Pts from (
SELECT t.tms_id, t.tms_name, SUM(s.lsc_1stscore) as Pts FROM tb_team as t,tb_league as l, tb_game as g, tb_score as s
WHERE (t.tms_id = l.lgs_1stplace) AND (l.fk_lsc_id = s.lsc_id) AND (t.fk_gms_id = g.gms_id) AND (g.gms_id = 1)
GROUP BY t.tms_name
) t1
union
Select t2.tms_id, t2.tms_name, t2.Pts from (
SELECT t.tms_id, t.tms_name, SUM(s.lsc_2ndscore) as Pts FROM tb_team as t,tb_league as l, tb_game as g, tb_score as s
WHERE (t.tms_id = l.lgs_2ndplace) AND (l.fk_lsc_id = s.lsc_id) AND (t.fk_gms_id = g.gms_id) AND (g.gms_id = 1)
GROUP BY t.tms_name
) t2
union
Select t3.tms_id, t3.tms_name, t3.Pts from (
SELECT t.tms_id, t.tms_name, SUM(s.lsc_3rdscore) as Pts FROM tb_team as t,tb_league as l, tb_game as g, tb_score as s
WHERE (t.tms_id = l.lgs_3rdplace) AND (l.fk_lsc_id = s.lsc_id) AND (t.fk_gms_id = g.gms_id) AND (g.gms_id = 1)
GROUP BY t.tms_name
) t3
union
Select t4.tms_id, t4.tms_name, t4.Pts from (
SELECT t.tms_id, t.tms_name, SUM(s.lsc_4thscore) as Pts FROM tb_team as t,tb_league as l, tb_game as g, tb_score as s
WHERE (t.tms_id = l.lgs_4thplace) AND (l.fk_lsc_id = s.lsc_id) AND (t.fk_gms_id = g.gms_id) AND (g.gms_id = 1)
GROUP BY t.tms_name
) t4
ORDER BY Pts DESC

このクエリで、特に最後のORDER BY Pts DESCの前にグループを追加する必要がありますが、GROUP BY tms_id（例）を追加すると、同じ結果が表示されます。

友人が私にVIEWを作成するように勧めましたが、私がこのエラーを表示しようとすると、次のようになります。

＃1349-ビューのSELECTのFROM句にサブクエリが含まれています

そして、私はサブクエリが何であるかを本当に知りません（私は検索しましたが、本当に理解していませんでした）。このクエリを再編成または修復して、別のGROUP BYを使用するにはどうすればよいですか？

4

1 に答える 1

2 
Extract.

Select t1.tms_id, t1.tms_name, t1.Pts from (
    SELECT t.tms_id, t.tms_name, SUM(s.lsc_1stscore) as Pts FROM tb_team as t,tb_league as l, tb_game as g, tb_score as s
    WHERE (t.tms_id = l.lgs_1stplace) AND (l.fk_lsc_id = s.lsc_id) AND (t.fk_gms_id = g.gms_id) AND (g.gms_id = 1)
    GROUP BY t.tms_name
) t1

以下は、上記のsqlステートメントからのサブクエリです。

   SELECT t.tms_id, t.tms_name, SUM(s.lsc_1stscore) as Pts FROM tb_team as t,tb_league as l, tb_game as g, tb_score as s
    WHERE (t.tms_id = l.lgs_1stplace) AND (l.fk_lsc_id = s.lsc_id) AND (t.fk_gms_id = g.gms_id) AND (g.gms_id = 1)
    GROUP BY t.tms_name

mysqlビュー内でサブクエリを使用するには、各サブクエリをビューにしてから、サブクエリの代わりにそのビューを使用します。

于 2013-03-21T03:15:11.810 に答える