I have created a custom type as a domain based on text, which adds a check constraint using a regexp to limit it to containing digits and '.'. However I am finding I can add values with other characters to a column of this type. Is this to be expected for some reason?
Or alternately, did I define the constraint wrong somehow? It is defined thus:
CREATE DOMAIN hierpath AS text CHECK( VALUE ~ '[0-9.]+' );
Checking the docs I'm pretty sure the '.' doesn't need escaping but I also tried a test leaving it out ( '[0-9]+') and the result is the same. It lets me store letters in a column defined to be of this type.
The version() function tells me "PostgreSQL 9.4.5 on x86_64-unknown-linux-gnu, compiled by gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2, 64-bit"
Thanks, Eric
I think you regexp is too weak. So long as the value has a digit or period, it's good. '^[0-9.]+$' might work
