mysql - How to add years in a date column? -

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मेरे पास निम्न प्रश्न हैं: 

  SELECT code, date_format (first_date, '% d   
 यदि मैं चौथी पंक्ति को निम्न में बदलता हूं:    
  पूर्व>  date_add (date_format (last_date, '% d /% m /% y'), अंतराल 5 वर्ष)   
 और परिणाम के रूप में नल प्राप्त करें।  
 समस्या क्या है और मैं इसे कैसे हल कर सकता हूं?  
 पीएस .: प्रथम_डेट और अंतिम_डेट "डेट" प्रकार हैं।   
 
 
 अपने फ़ंक्शन कॉल्स को आसपास स्विच करें ताकि आप  पहले  5 वर्ष जोड़ दें और  फिर  प्रारूप को नई तिथि:  
  date_format (date_add (अंतिम_डेट, अंतराल 5 वर्ष), '% d /% m /% Y')

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