:) Import file2table Question

Good Morning,

        @^_^@

    Could you please tell me ....

1    -How can I import a text file into Postgres table ?
     (append to the last row)

    -What is the format of that text file ?

This is what I've done and its result....

ProjDB=> copy PrjTB from /prj_data/test.txt using delimiters ,
ProjDB-> ;
ERROR:  parser: syntax error at or near "/"


2    -What table field type that suits for 6-digit decimal number..
     (i.e. 0.000000, 0.250001 , 0.123456 , ....)?

     I've defined this column with float4 and float8
     but when I inserted data it returned this error message..


ProjDB=> insert into PrjTB values (0.000000,'red','Ln1')
ProjDB->;
ERROR:  pg_atoi: error in "0.000000": can't parse ".000000"




Thank You for your advance help,
    Korapat Charu.