function problem

ABHANG RANE <arane@indiana.edu> writes:

I have written a function called similarity in postgresql which accepts
real[] as argument. I then call it by saying

select * from similarity('{1.232,5.0000, 5.100, 10000}');

I get this error.

Could not choose a best candidate function. You may need to add
explicit type casts.

Apparently you've got more than one function named "similarity".
If that wasn't intentional, get rid of the bogus ones. If it was,
cast your constant to make it clear which type you intend.

regards, tom lane