Classes
struct	IteratorToBeCreated

Functions
bool	ShouldEnableBatchMode (AccessPath *path)

bool	IsForcedMaterialization (THD thd, Item cond)

bool	FinalizeMaterializedSubqueries (THD thd, JOIN join, AccessPath *path)
	If the path is a FILTER path marked that subqueries are to be materialized, do so. More...

void	SetupJobsForChildren (MEM_ROOT mem_root, AccessPath child, JOIN join, bool eligible_for_batch_mode, IteratorToBeCreated job, Mem_root_array< IteratorToBeCreated > *todo)

void	SetupJobsForChildren (MEM_ROOT mem_root, AccessPath outer, AccessPath inner, JOIN join, bool inner_eligible_for_batch_mode, IteratorToBeCreated job, Mem_root_array< IteratorToBeCreated > todo)

Function Documentation

◆ FinalizeMaterializedSubqueries()

bool anonymous_namespace{access_path.cc}::FinalizeMaterializedSubqueries	(	THD *	thd,
		JOIN *	join,
		AccessPath *	path
	)

If the path is a FILTER path marked that subqueries are to be materialized, do so.

If not, do nothing.

It is important that this is not called until the entire plan is ready; not just when planning a single query block. The reason is that a query block A with materializable subqueries may itself be part of a materializable subquery B, so if one calls this when planning A, the subqueries in A will irrevocably be materialized, even if that is not the optimal plan given B. Thus, this is done when creating iterators.

◆ IsForcedMaterialization()

bool anonymous_namespace{access_path.cc}::IsForcedMaterialization	(	THD *	thd,
		Item *	cond
	)

◆ SetupJobsForChildren() [1/2]

void anonymous_namespace{access_path.cc}::SetupJobsForChildren	(	MEM_ROOT *	mem_root,
		AccessPath *	child,
		JOIN *	join,
		bool	eligible_for_batch_mode,
		IteratorToBeCreated *	job,
		Mem_root_array< IteratorToBeCreated > *	todo
	)

◆ SetupJobsForChildren() [2/2]

void anonymous_namespace{access_path.cc}::SetupJobsForChildren	(	MEM_ROOT *	mem_root,
		AccessPath *	outer,
		AccessPath *	inner,
		JOIN *	join,
		bool	inner_eligible_for_batch_mode,
		IteratorToBeCreated *	job,
		Mem_root_array< IteratorToBeCreated > *	todo
	)

◆ ShouldEnableBatchMode()

bool anonymous_namespace{access_path.cc}::ShouldEnableBatchMode ( AccessPath * path )