Oracle 11g SQL select max integer value of varchar column -

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myTable 

 UNID 9 10

UNID एक VARCHAR2 है

मेरीटेबल से अधिकतम (यूएनआईडी) का चयन करें यूएनआईडी को उच्चतम लेक्सिकोग्राफिक मान (9) के साथ देता है।

मैं सबसे अधिक पूर्णांक मान (10) के साथ यूएनआईडी कैसे चुनूं?

नहीं 

  अधिकतम चुनें (to_number (UNID)) से अपनेटेबल

काम?


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