Hi skarthi, On Wed, 2007-04-11 at 13:30 -0700, Karthikeyan Sundaram wrote: > insert into test_a values (to_char(1,'9')); > > ERROR: column "b" is of type bit but expression is of type > text > HINT: You will need to rewrite or cast the expression. As suggested by the error, you should use a cast, e.g., insert into test_a values 9::bit(3); This will result in binary '001' being inserted because you need 4 bits to represent decimal 9. Joe