how to pass the function caller's parameter to inside the function. syntax error at or near "$1"

I want to create a function which use to truncate the table specified by the
caller. I very confused how postgresql pass this parameter into the function
:

as a superuser to execute :
1)
create or replace function d() returns void as $$
analyze;
$$ language sql;


----- this works when i issue select d()

2) this doesn't work

create or replace function v(text) returns void as $$
analyze $1;
$$ language sql;

 why???? and how to correct it?


I tried another function for insert

1) this works.

create or replace function insert_f(integer) returns void as $$
insert into t1 values($1);
$$ language sql;

----this works when i issue select insert_f(20);

2) this doesn't work.

create or replace function insert_f(text,integer) returns void as $$
insert into $1 values($2);
$$ language sql;

---- it failed to create the function and give me error : syntax error at or
near "$1".

Please help.

Thanks.

Regards.

Grace




--
View this message in context:
http://postgresql.1045698.n5.nabble.com/how-to-pass-the-function-caller-s-parameter-to-inside-the-function-syntax-error-at-or-near-1-tp5601045p5601045.html
Sent from the PostgreSQL - general mailing list archive at Nabble.com.