QUERY PLAN Bitmap Heap Scan on authors (cost=593.75.. 3510.28 ' L' : : text rows=9984 width=27) Filter : ( author : : text ~~ Bitmap Index Scan on authors_author_key (cost-0.00.-591.25 rows-9883 width-0) Index Cond: (author) : : text >= 'L' : : text) AND ( author) : : text