ROR_SCAN_INFO Struct Reference

#include <rowid_ordered_retrieval_plan.h>

Public Attributes
uint	idx
uint	keynr
ha_rows	records
	estimate of # records this scan will return More...
SEL_ROOT *	sel_root
	Set of intervals over key fields that will be used for row retrieval. More...
OverflowBitset	covered_fields
	Fields used in the query and covered by this ROR scan. More...
Cost_estimate	index_read_cost
	Cost of reading all index records with values in sel_arg intervals set (assuming there is no need to access full table records) More...
Bounds_checked_array< QUICK_RANGE * >	ranges
	The ranges to scan for this index. More...
uint	used_key_parts

Member Data Documentation

covered_fields

OverflowBitset ROR_SCAN_INFO::covered_fields

Fields used in the query and covered by this ROR scan.

idx

uint ROR_SCAN_INFO::idx

of used key in param->keys

index_read_cost

Cost_estimate ROR_SCAN_INFO::index_read_cost

Cost of reading all index records with values in sel_arg intervals set (assuming there is no need to access full table records)

keynr

uint ROR_SCAN_INFO::keynr

of used key in table

ranges

Bounds_checked_array<QUICK_RANGE *> ROR_SCAN_INFO::ranges

The ranges to scan for this index.

Must be allocated on the return_mem_root.

records

ha_rows ROR_SCAN_INFO::records

estimate of # records this scan will return

sel_root

SEL_ROOT* ROR_SCAN_INFO::sel_root

Set of intervals over key fields that will be used for row retrieval.

used_key_parts

uint ROR_SCAN_INFO::used_key_parts

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The documentation for this struct was generated from the following file:

• sql/range_optimizer/rowid_ordered_retrieval_plan.h