What's the length of the new app-scoped User IDs

Question

In Graph API v2.0, Facebook introduced new "App-scoped User IDs". In the documentation, the ID field was changed into a string, however the length of the new IDs is uncertain.

Any insights?

Answer 1

App scoped user IDs are the same length as other IDs in the Facebook API - a 64 bit number (returned as a string).

In MySQL you could set the column to be a BIGINT which stores 64 bit integers. (or store as a String)