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Date: Sat, 9 Nov 2013 23:32:14 -0800 (PST)
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Subject: BitMap Heap Scan & BitMap Index Scan
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I would like to know, What is BitMap Heap Scan & BitMap Index Scan?When I use
EXPLAIN for query, which has LEFT JOIN with 4 different table thensome time
query planner uses Bitmap Heap Scan and some time Bitmap Index Scan?



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I would like to know, What is BitMap Heap Scan & BitMap Index Scan?
When I use EXPLAIN for query, which has LEFT JOIN with 4 different table then
some time query planner uses Bitmap Heap Scan and some time Bitmap Index Scan?

	
	
	
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