Question

我无法创建视图。您可以在下面找到我的代码。有人可以帮帮我吗？

CREATE VIEW V_Campeonato AS SELECT team.tim_cod_inscri_time
        , SUM( CASE WHEN partida.par_gol_mand > partida.par_gol_visi  THEN 1 ELSE 0 END ) AS VITORIAS
        , SUM( CASE WHEN partida.par_gol_mand = partida.par_gol_visi  THEN 1 ELSE 0 END ) AS EMPATES
        , SUM( CASE WHEN partida.par_gol_mand < partida.par_gol_visi  THEN 1 ELSE 0 END ) AS DERROTAS
FROM team 
INNER JOIN partida 
ON team.tim_cod_inscri_time = partida.par_cod_partida
ORDER BY ( VITORIAS * 3 + EMPATES ) DESC;

ERROR 1247（42S22）：不支持参考'VITORIAS'（参考小组职能）

Answer 1

在此代码中很难完全理解您的目标。但是，这可能就是你所追求的：

 SELECT SUM(VITORIAS), SUM(EMPATES), SUM(DERROTAS), tim_cod_inscri_time FROM

    (SELECT
    (CASE WHEN partida.par_gol_mand > partida.par_gol_visi THEN 1 ELSE 0 END ) AS VITORIAS , 
    (CASE WHEN partida.par_gol_mand = partida.par_gol_visi THEN 1 ELSE 0 END ) AS EMPATES , 
    (CASE WHEN partida.par_gol_mand < partida.par_gol_visi THEN 1 ELSE 0 END ) AS DERROTAS
    FROM team INNER JOIN partida ON team.tim_cod_inscri_time = partida.par_cod_partida)
    AS teamrecord
    GROUP BY tim_cod_inscri_time
    ORDER BY ( VITORIAS * 3 + EMPATES ) DESC;

我将SUM从内部表中拉出来，并分别总结了胜利。另外，我给子查询一个任意名称teamrecord。这是你要的吗？

ERROR 1247（42S22）：不支持参考'VITORIAS'（参考组功能）

1 个答案: