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Pervasive SQL を使用しています。複数の SQL ステートメントの次の UNION があります。これをクリーンアップする方法はありますか。特に、各ステートメントで選択されている Pay Date と Loc No フィールドです。これを引き出して、これらの 2 つのフィールドを変更する必要がある場所を 1 つだけにする方法はありますか?

(
    SELECT 
    '23400' as Gl_Number,
        y.Plan as Description,
        0 as Hours,
        ROUND(SUM(Ee_Curr),2) as Debit,
        0 as Credit
    FROM "PR_YLOC" y
    LEFT JOIN PR_SUMM s ON (s.Summ_No = y.Summ_No)
    WHERE y.Loc_No = 1041
    AND s.Pay_Date = '2010-04-02'
    AND y.Code IN (100, 105, 110)
    AND y.Type = 3
    GROUP BY y.Plan
) UNION (
    SELECT 
    '72000' as Gl_Number,
        y.Plan,
        0,
        ROUND(SUM(Er_Curr),2),
        0
    FROM "PR_YLOC" y
    LEFT JOIN PR_SUMM s ON (s.Summ_No = y.Summ_No)
    WHERE y.Loc_No = 1041
    AND s.Pay_Date = '2010-04-02'
    AND y.Code IN (100, 105, 110)
    AND y.Type = 3
    GROUP BY y.Plan
) UNION (
SELECT '24800',
       c.Plan,
       0,
       ROUND(SUM(Ee_Amt),2),
       0
    FROM "PR_CDED" c WHERE Pay_Date = '2010-04-02' AND Loc_No = 1041 AND Code = 100
    GROUP BY c.Plan
) UNION (
SELECT '24800',
       c.Plan,
       0,
       0,
       ROUND(SUM(Ee_Amt),2)
    FROM "PR_CDED" c WHERE Pay_Date = '2010-04-02' AND Loc_No = 1041 AND Code = 115
    GROUP BY c.Plan
) UNION (
SELECT '24150',
       c.Plan,
       0,
       0,
       ROUND(SUM(Ee_Amt),2)    
    FROM "PR_CDED" c WHERE Pay_Date = '2010-04-02' AND Loc_No = 1041 AND Code = 241
    GROUP BY c.Plan
) UNION (
SELECT '24150',
       c.Plan,
       0,
       ROUND(SUM(Ee_Amt),2),
       0
    FROM "PR_CDED" c WHERE Pay_Date = '2010-04-02' AND Loc_No = 1041 AND Code = 239
    GROUP BY c.Plan
) UNION (
SELECT '24120',
       c.Plan,
       0,
       ROUND(SUM(Ee_Amt),2),
       0
    FROM "PR_CDED" c WHERE Pay_Date = '2010-04-02' AND Loc_No = 1041 AND Code = 230
    GROUP BY c.Plan
) UNION (
SELECT '24100',
       c.Plan,
       0,
       ROUND(SUM(Ee_Amt),2),
       0
    FROM "PR_CDED" c WHERE Pay_Date = '2010-04-02' AND Loc_No = 1041 AND Code = 225
    GROUP BY c.Plan
) UNION (
SELECT '23800',
       c.Plan,
       0,
       ROUND(SUM(Ee_Amt),2),
       0
    FROM "PR_CDED" c WHERE Pay_Date = '2010-04-02' AND Loc_No = 1041 AND Code = 245
    GROUP BY c.Plan
) UNION (
select m.Def_Dept as Gl_Number, t.Short_Desc,
    (SELECT SUM(Hours) FROM pr_earn en WHERE en.Loc_No = e.Loc_No AND en.Emp_No = e.Emp_No AND en.Pay_Date = e.Pay_Date AND en.Pay_Code = e.Pay_Code) as Hours,
    (SELECT SUM(Pay_Amt) FROM pr_earn en WHERE en.Loc_No = e.Loc_No AND en.Emp_No = e.Emp_No AND en.Pay_Date = e.Pay_Date AND en.Pay_Code = e.Pay_Code) as Debit,
    0
from pr_earn e
left join pr_mast m on (e.Loc_No = m.Loc_No and e.Emp_No = m.Emp_No)
left join pr_ptype t ON (t.Code = e.Pay_Code)
where e.loc_no = 1041 and e.pay_date = '2010-04-02'
group by m.Def_Dept, t.Short_Desc
)

ありがとう

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4 に答える 4

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SELECTステートメントの中央のセットを次のようなものに置き換えることができますか？

) UNION (
SELECT CASE Code
         WHEN 100 THEN '24800'
         WHEN 115 THEN '24800',
         WHEN 241 THEN '24150'
         WHEN 239 THEN '24150',
         WHEN 230 THEN '24120',
         WHEN 225 THEN '24100'
         WHEN 245 THEN '23800',
       END,
       c.Plan,
       0,
       ROUND(SUM(Ee_Amt),2),
       0
    FROM "PR_CDED" c WHERE Pay_Date = '2010-04-02' AND Loc_No = 1041 AND Code IN (100, 115, 241, 239, 230, 225, 245)
    GROUP BY c.Plan
) UNION (

これはT-SQLCASEステートメントですが、Oracle PL/SQLにも同様のものがあると確信しています。

于 2010-04-26T14:38:00.960 に答える
0

ほぼ同じフィルター基準（ " AND Code = ..."での違い）を持つ多くの選択の代わりに、フィルター基準を持つ1つの選択のみに置き換えることができますAND Code IN (..., ..., ...)。

于 2010-04-26T14:26:49.127 に答える
0

パフォーマンスに影響を与えずに保守性を高めようとしているようです。このプラットフォームはわかりませんが、ユニオンをサブクエリとして使用して、where句を1つ最後に移動でき、クエリオプティマイザが各ユニオンセットのwhere条件を適用することを理解できる可能性があると思います.

于 2010-04-26T14:31:39.730 に答える
0

これには case ステートメントを使用できます。例えば：

SELECT  
'23400' as Gl_Number, 
    y.Plan as Description, 
    0 as Hours, 
    ROUND(SUM(Ee_Curr),2) as Debit, 
    0 as Credit 
FROM "PR_YLOC" y 
LEFT JOIN PR_SUMM s ON (s.Summ_No = y.Summ_No) 
WHERE y.Loc_No = 1041 
AND s.Pay_Date = '2010-04-02' 
AND y.Code IN (100, 105, 110) 
AND y.Type = 3 
GROUP BY y.Plan 
UNION
SELECT  
'72000' as Gl_Number, 
    y.Plan, 
    0, 
    ROUND(SUM(Er_Curr),2), 
    0 
FROM "PR_YLOC" y 
LEFT JOIN PR_SUMM s ON (s.Summ_No = y.Summ_No) 
WHERE y.Loc_No = 1041 
AND s.Pay_Date = '2010-04-02' 
AND y.Code IN (100, 105, 110) 
AND y.Type = 3 
GROUP BY y.Plan 
UNION
SELECT case Code 
            when Code in (100,115) then'24800'
            when Code in (241, 239) then'24150'
            when Code = 230 then'24120'
            when Code = 225 then'24100'
            when Code = 245 then'23800'
        end, 
       c.Plan, 
       0, 
       ROUND(SUM(Ee_Amt),2), 
       0 
    FROM "PR_CDED" c WHERE Pay_Date = '2010-04-02' AND Loc_No = 1041 AND Code in (100,115,241,239,230,225,245)
    GROUP BY c.Plan 
select m.Def_Dept as Gl_Number, t.Short_Desc, 
    (SELECT SUM(Hours) FROM pr_earn en WHERE en.Loc_No = e.Loc_No AND en.Emp_No = e.Emp_No AND en.Pay_Date = e.Pay_Date AND en.Pay_Code = e.Pay_Code) as Hours, 
    (SELECT SUM(Pay_Amt) FROM pr_earn en WHERE en.Loc_No = e.Loc_No AND en.Emp_No = e.Emp_No AND en.Pay_Date = e.Pay_Date AND en.Pay_Code = e.Pay_Code) as Debit, 
    0 
from pr_earn e 
left join pr_mast m on (e.Loc_No = m.Loc_No and e.Emp_No = m.Emp_No) 
left join pr_ptype t ON (t.Code = e.Pay_Code) 
where e.loc_no = 1041 and e.pay_date = '2010-04-02' 
group by m.Def_Dept, t.Short_Desc
于 2010-04-26T14:35:05.667 に答える