For a webbased application:-
what should be code in expert veiw, for retrieving a
single column name "username" from a server and checking
whether exported "username" from datatable doesn't exist in
server.
suppose i have saved in excelsheet a username="gayatri" ,
which is exported, then checked for whether this
username "gayatri" exist in server database or not ? if
exist then allow to enter new username, which should be
again checked for in loop , or else come out of loop and
enter a distinct "username".
plz let me have this answer in my id
gayatrisahooin@hotmail.com
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