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2つの選択クエリがあり、両方から値を選択して新しいクエリを作成したいと思います。参加しようとしましたが、知りたい情報が得られません。

私が持っている最初のクエリは以下のものです：

 SELECT InWarehouse.expiry_date, 
      drugs.active_substance, 
      drugs.strength, 
      drugs.strength_type, 
      drugs.dosage_form, 
      drugs.minimum_quantity, 
      NZ(SUM(InWarehouse.quantity),0) AS quant
 FROM drugs 
      LEFT JOIN (SELECT drug_id, 
                        expiry_date, 
                        SUM(in_quant - out_quant) AS quantity 
                FROM warehouse GROUP BY drug_id, expiry_date)  
 AS InWarehouse ON 
      InWarehouse.drug_id = drugs.id
      GROUP BY InWarehouse.expiry_date, 
      drugs.active_substance, 
      drugs.strength, 
      drugs.strength_type, 
      drugs.dosage_form, 
      drugs.minimum_quantity;

そして2つ目は：

 SELECT InPharmacy.expiry_date, 
      drugs.active_substance, 
      drugs.strength, 
      drugs.strength_type, 
      drugs.dosage_form, 
      drugs.minimum_quantity,
      NZ(SUM(InPharmacy.quantity), 0) as quant
 FROM (drugs
 LEFT JOIN (SELECT drug_id, expiry_date, SUM(in_quant - out_quant) as quantity
            FROM pharmacy
            GROUP BY drug_id, expiry_date) as InPharmacy
 ON InPharmacy.drug_id = drugs.id)

 GROUP BY  InPharmacy.expiry_date, 
      drugs.active_substance, 
      drugs.strength, 
      drugs.strength_type, 
      drugs.dosage_form, 
      drugs.minimum_quantity;

私は取得したい：

InWarehouse.expiry_date, 
drugs.active_substance, 
drugs.strength, 
drugs.strength_type, 
drugs.dosage_form, 
drugs.minimum_quantity,
InWarehouse.quantity + InPharmacy.quantity,
InPharmacy.expiry_date
GROUP BY InWarehouse.expiry_date = InPharmacy.expiry_date

何か助けてください？

4

1 に答える 1

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2つのクエリをメインクエリのサブクエリとして配置できます。

SELECT InWarehouse.expiry_date, 
t1.active_substance, 
drugs.strength, 
drugs.strength_type, 
drugs.dosage_form, 
drugs.minimum_quantity,
InWarehouse.quantity + InPharmacy.quantity,
InPharmacy.expiry_date
FROM (SELECT InWarehouse.expiry_date, 
      drugs.active_substance, 
      drugs.strength, 
      drugs.strength_type, 
      drugs.dosage_form, 
      drugs.minimum_quantity, 
      NZ(SUM(InWarehouse.quantity),0) AS quant
 FROM drugs 
      LEFT JOIN (SELECT drug_id, 
                        expiry_date, 
                        SUM(in_quant - out_quant) AS quantity 
                FROM warehouse GROUP BY drug_id, expiry_date)  
 AS InWarehouse ON 
      InWarehouse.drug_id = drugs.id
      GROUP BY InWarehouse.expiry_date, 
      drugs.active_substance, 
      drugs.strength, 
      drugs.strength_type, 
      drugs.dosage_form, 
      drugs.minimum_quantity  
) t1
JOIN (  SELECT InPharmacy.expiry_date, 
      drugs.active_substance, 
      drugs.strength, 
      drugs.strength_type, 
      drugs.dosage_form, 
      drugs.minimum_quantity,
      NZ(SUM(InPharmacy.quantity), 0) as quant
 FROM (drugs
 LEFT JOIN (SELECT drug_id, expiry_date, SUM(in_quant - out_quant) as quantity
            FROM pharmacy
            GROUP BY drug_id, expiry_date) as InPharmacy
 ON InPharmacy.drug_id = drugs.id)

 GROUP BY  InPharmacy.expiry_date, 
      drugs.active_substance, 
      drugs.strength, 
      drugs.strength_type, 
      drugs.dosage_form, 
      drugs.minimum_quantity ) t2
 ON t1.active_substance = t2.active_substance

このフィールドを2つのテーブルを結合するためのキーとして使用しましたactive_substance。適切でない場合は、より適切な列のセットを選択できますが、2つの方法では、2つの異なるクエリをメインクエリのサブクエリとして配置し、適切な方法で結合します。 ..。

于 2012-06-08T12:07:17.073 に答える