sql server - How to subtract Time Column from DateTime Column in SQL? -


मेरे पास Crea_Date कॉलम है जो कि एक दिनांकटाइम स्तंभ है मैं IST कॉलम में crea_date कॉलम में मूल्य घटाना चाहता हूं और इसे दिनांकटाइम मान के साथ एक नया कॉलम वापस लौटाता हूं। मेरा नमूना डेटा इस तरह है:

<पूर्व> राज्य crea_date IST एबी 2014-12-30 15: 01: 00.000 12: 30: 00.0000000 एके 2014-12-29 16: 32: 00.000 10:30 : 00.0000000 AZ 2014-12-18 16: 07: 00: 11: 30: 00.0000000

अग्रिम धन्यवाद

यदि IST एक पूर्णांक संख्या है तो सेकंड्स का: 

  SELECT DATEAD (s, -IST, crea_date) / Code>  
 यदि  IST  का  TIME  प्रकार है: 
 
  SELECT DATEADD (ms, DATEDIFF (ms) , आईएसटी, '00: 00: 00 '), क्रेआ_डेट) आपके टेबल से

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