anonymous_namespace{cost_model.cc}::AggregateRowEstimator::Prefix Struct Reference

A prefix of some key where each key_part corresponds to an aggregation term. More...

Public Member Functions
string	Print () const

Public Attributes
const KEY *	m_key
	The key (index). More...
uint	m_length
	The number of key_parts found in 'terms'. More...

Detailed Description

A prefix of some key where each key_part corresponds to an aggregation term.

Member Function Documentation

Print()

string anonymous_namespace{cost_model.cc}::AggregateRowEstimator::Prefix::Print

(

)

const

Returns

A string representation of this object (for optimizer trace).

Member Data Documentation

m_key

const KEY* anonymous_namespace{cost_model.cc}::AggregateRowEstimator::Prefix::m_key

The key (index).

m_length

uint anonymous_namespace{cost_model.cc}::AggregateRowEstimator::Prefix::m_length

The number of key_parts found in 'terms'.

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

• sql/join_optimizer/cost_model.cc