change type in psql

[nafiseh saberi]

hi dear team...
I wish all of you be successful in all work & life.

do you know ,how  can I change the type of one special
column in table in postgres ?
(i use "alter" , but it doesn't change the type of it.
i want to change from char to varchar)
 
thx and appreciate for any time that you get to me.
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  Best regards.     Nafiseh Saberi   
       www.iraninfocenter.net
             www.sorna.net
Beauty is in the eye of the beholder.
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