Using the Graph API Explorer app, I attempt the following query: https://developers.facebook.com/tools/explorer?method=GET&path=fql%3Fq%3DSELECT%20uid%20FROM%20page_fan%20WHERE%20page_id%3D'123412341234'
(fake id above, though I used a real id in my query)
An error is noting: Your statement is not indexable. The WHERE clause must contain an indexable column. Such columns are marked with * in the tables linked from http://developers.facebook.com/docs/reference/fql
However, the uid field in the page_fan table does have an asterisk next to it, indicating it's an indexable column.
What am I doing wrong here?