postgresql - SQL want Repeated result NULL from one table -


नमस्ते मुझे एसक्यूएल क्वेरी उदाहरण में समस्या है

कर्मचारी 

  Empid empname 1 gan 2 sum

पदनाम 

  id desig empid 1 sr officerr 1 2 जूनियर अधिकारी 1 3 प्रबंधक 2

मैं तालिकाओं में शामिल होना चाहता हूँ और कर्मचारी टेबल दोहराए हुए रिकॉर्ड्स चाहते हैं 

  परिणाम empid name desig id 1 gan sr officerr 1 1 NULL jr officer 2 2 sam manager 3

मैं क्वेरी पर काम कर रहा हूं लेकिन मुझे परिणाम प्राप्त नहीं हो रहा है 

  चुनें DISTINCT designatin.empid, employee.empname, designatin.desig FROM designatin INNER कर्मचारी में शामिल हों कर्मचारी employee.empid = designatin पर। Empid ग्रुप द्वारा कर्मचारी। एम्पीआईडी, कर्मचारी.एम्प्लाइज़, डिजाइनैटिन। डीसीआईजी

क्या कोई हल कर सकता है?

बदलें अंदरूनी एक बाएं जुड़ने में शामिल हों:

<पूर्व> चुनें डिज़ाइन designatin.empid, employee.empname, designatin.desig से designatin left left employee.empid = designatin.empid ग्रुप employee.empid द्वारा, Employee.empname, designatin.desig

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