Merge_chunk_greater Struct Reference

This struct is used for merging chunks for filesort() For filesort() with fixed-size keys we use memcmp to compare rows. More...

#include <cmp_varlen_keys.h>

Public Member Functions
	Merge_chunk_greater (size_t len)
	Merge_chunk_greater (Sort_param *param)
bool	operator() (Merge_chunk *a, Merge_chunk *b) const
bool	key_is_greater_than (uchar *key1, uchar *key2) const

Public Attributes
size_t	m_len
Sort_param *	m_param

Detailed Description

This struct is used for merging chunks for filesort() For filesort() with fixed-size keys we use memcmp to compare rows.

For variable length keys, we use cmp_varlen_keys to compare rows.

Constructor & Destructor Documentation

Merge_chunk_greater() [1/2]

Merge_chunk_greater::Merge_chunk_greater ( size_t  len )

inlineexplicit

Merge_chunk_greater() [2/2]

Merge_chunk_greater::Merge_chunk_greater ( Sort_param *  param )

inlineexplicit

Member Function Documentation

key_is_greater_than()

bool Merge_chunk_greater::key_is_greater_than ( uchar *  key1, uchar *  key2  ) const

inline

operator()()

bool Merge_chunk_greater::operator() ( Merge_chunk *  a, Merge_chunk *  b  ) const

inline

Member Data Documentation

m_len

size_t Merge_chunk_greater::m_len

m_param

Sort_param* Merge_chunk_greater::m_param

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

• sql/cmp_varlen_keys.h