creating user - Mailing list pgsql-admin

From sandhya
Subject creating user
Date
Msg-id 022f01c65ca1$38471370$cd00000a@sandhyar
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Responses Re: creating user
List pgsql-admin
Hi...
 I want to know more about alter user /creating users.I am facing error if i give user with Login/Nologin..Why is it so?
But it is working fine for Createdb/NoCreatedb.etc.
 
sample=# ALTER user sandhya with LOGIN;
ERROR:  syntax error at or near "LOGIN" at character 25
LINE 1: ALTER user sandhya with LOGIN;
 
Please explain me about this/Suggest Some Manual where in i can find more about this.I have gone through postgres site.
 
-Sandhya

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