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Bitmap Heap Scan

Short Description

The Bitmap Heap Scan scans selected pages from the heap table specified

Detailed Description

The Bitmap Heap Scan scans selected pages from the heap table specified. This node is usually preceded by a Index Scan or a Bitmap Index Scan which return a list of matching pages to visit. The Bitmap Heap Scan node sorts the list of pages so that physical access can be optimized. The ‘bitmap’ in the node’s title refers to the sorting method used.

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