What is the total number of crimes that happened in Bridgeport with beat less than 1000?
Bridgeport refers to community_area_name = 'Bridgeport'; with beat less than 1000 refers to beat < 1000; total number = count(beat) where community_area_name = 'Bridgeport' and beat < 1000
SELECT SUM(CASE WHEN T2.beat < 1000 THEN 1 ELSE 0 END) FROM Community_Area AS T1 INNER JOIN Crime AS T2 ON T2.community_area_no = T1.community_area_no WHERE T1.community_area_name = 'Bridgeport'