sql - Oracle SUM returns false summary with identicals values returing from an SELECT UNION -

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मुझे SUM कथन के साथ एक समस्या का सामना करना पड़ रहा है।

यह क्वेरी रिटर्न MY_ID = 1 और QTY = 7 

  my_id चुनें, राशि (qty) की मात्रा से (1 my_id चुनें, दो वर्ग से दो वर्ग 1 my_id का चयन करें, 5 मात्रा दोहरे से) my_id द्वारा समूह;   
 लेकिन यह एक  QTY = 10  के बजाय  MY_ID = 1  और  QTY = 5  देता है। < / p> 
  my_id चुनें, राशि (मात्रा) की मात्रा से (my_id का चयन करें, दोहरी संघ से 5 मात्रा 1 my_id चुनें, दोहरी से 5 मात्रा) my_id द्वारा समूह;   
 दो मानों के मामले में मैं कैसे दो मात्रा का सारांश  समान  कर सकता हूं?   
 
 
 यूनियन का उपयोग करें:  
  my_id चुनें, राशि (मात्रा) की मात्रा से (1 my_id चुनें, दोहरी संघ से 5 मात्रा चुनें, सभी 1 चुनें My_id, दोहरी से 5 मात्रा my_id द्वारा समूह;

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