Item_in_subselect::In2exists_info Struct Reference

This bundles several pieces of information useful when doing the IN->EXISTS transform. More...

Public Attributes
bool	added_to_where
	True: if IN->EXISTS has been done and has added a condition to the subquery's WHERE clause. More...
bool	dependent_before
	True: if subquery was dependent (correlated) before IN->EXISTS was done. More...
bool	dependent_after
	True: if subquery was dependent (correlated) after IN->EXISTS was done. More...

Detailed Description

This bundles several pieces of information useful when doing the IN->EXISTS transform.

If this transform has not been done, pointer is NULL.

Member Data Documentation

added_to_where

bool Item_in_subselect::In2exists_info::added_to_where

True: if IN->EXISTS has been done and has added a condition to the subquery's WHERE clause.

dependent_after

bool Item_in_subselect::In2exists_info::dependent_after

True: if subquery was dependent (correlated) after IN->EXISTS was done.

dependent_before

bool Item_in_subselect::In2exists_info::dependent_before

True: if subquery was dependent (correlated) before IN->EXISTS was done.

---

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

• sql/item_subselect.h