SQL table does not backup with bcp C# -


i using following codes backup tables in sql database. 

 //passenger table backup  psi = new processstartinfo();  psi.filename = "bcp.exe";  psi.arguments = @"passenger out backup\backuppassenger.csv -t -d crashflight101 -w";  process.start(psi);                 //pilot table backup  psi = new processstartinfo();  psi.filename = "bcp.exe";  psi.arguments = @"pilot out backup\backuppilot.csv -t -d crashflight101 -w";  process.start(psi);   //user table backup  psi = new processstartinfo();  psi.filename = "bcp.exe";  psi.arguments = @"user out backup\backupuser.csv -t -d crashflight101 -w";  process.start(psi);

for reason doesn't want backup user table , can't seem see why. each table has same permissions , created same way. simple database design no schema structure. appreciated.


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