Èñïîëüçîâàíèå êîíñòàíò â âûðàæåíèè SQL
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×åòâåðã, 17 Èþëÿ 2014 ã. 13:27
+ â öèòàòíèê
Ãîñïîäà, ïðîøó ñîâåòà.
Åñòü òàáëèöà_ñ_äåíåæêîé.
ID|Revenue
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1|100
2|110
3|115
è ò.ä., çàïèñåé ìíîãî (>ìëí)
Åñòü âòîðàÿ òàáëè÷êà_ñ_íîìàòèâûìè.
Íîðìàòèâ|Çíà÷åíèå íîðàìàòèâà
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Ïåðâûé íîðìàòèâ|0,012
Âòîðîé íîðìàòèâ|0,7
Íóæíî ïîëó÷èòü ðåçóëüòàò:
Revenue|Revenue*Ïåðâûé íîðìàòèâ,Revenue*Âòîðîé íîðìàòèâ
ß èñïîëüçîâàë äëÿ ýòîãî DLookUp, íî ýòî ñèëüíî ìåäëåííî.
SELECT * from òàáëèöà_ñ_äåíåæêîé, revenue*dlookup('[Çíà÷åíèå íîðàìàòèâà]','òàáëè÷êà_ñ_íîìàòèâûìè', 'Íîðìàòèâ="Ïåðâûé íîðìàòèâ"'), revenue*dlookup('[Çíà÷åíèå íîðàìàòèâà]','òàáëè÷êà_ñ_íîìàòèâûìè', 'Íîðìàòèâ="Âòîðîé íîðìàòèâ"')
Ïîäñêàæèòå, åñòü ëè êàêîé-òî õèòðûé õîä êîíåì äëÿ ðåøåíèÿ òàêèõ çàäà÷?
http://www.sql.ru/forum/1105756/ispolzovanie-konstant-v-vyrazhenii-sql
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