mysql - LOAD DATA INFILE should fill up empty values with specific content -

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लोड डेटा INFILE को एक विशेष सामग्री के साथ केवल खाली मान भरना चाहिए।

सीएसवी: <पूर्व> मान 1, मूल्य 2 -------------- 1 123345 2 3 678 901

अपेक्षित परिणाम: 

 मान 1, मान 2 ---- ---------- 1 123345 2 के0000123345 3 678901  
  लोड डेटा INFILE .... SET .... ean = IFNULL (@ डी 3, कोंकैट ('0000 ' , A))   
 ... अभी भी रिक्त डेटाबेस मूल्यों का परिणाम होगा।   
 
 
 जब आप लोड डेटा का उपयोग कर रहे हैं इनपुट फ़ाइल में एक रिक्त फ़ील्ड खाली स्ट्रिंग (स्ट्रिंग प्रकार के लिए) के रूप में माना जाता है, तो खाली स्ट्रिंग  null  के समान नहीं है।  
 तो आपके इनपुट के लिए, आपका खाली फ़ील्ड  IFNULL ()  परीक्षण को विफल कर देगा। अपने क्षेत्र में इनकमिंग डेटा की लंबाई की जांच करें और यदि यह शून्य है तो सम्मिलित करें:  
  लोड डेटा INFILE .... SET .... ean = IF (CHAR_LENGTH (@ d3)> 0 , @ डी 3, कोंकैट ('के रूप में', 'ए'))

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