set_var_base Class Reference

#include <set_var.h>

Inheritance diagram for set_var_base:

Collaboration diagram for set_var_base:

Public Member Functions
virtual int	check (THD *thd)=0
virtual int	update (THD *thd)=0
virtual int	light_check (THD *thd)
virtual void	print (THD *thd, String *str)=0
virtual bool	is_var_optimizer_trace () const

Additional Inherited Members
Static Public Member Functions inherited from Sql_alloc
static void *	operator new (size_t size) throw ()
static void *	operator new[] (size_t size) throw ()
static void *	operator new[] (size_t size, MEM_ROOT *mem_root) throw ()
static void *	operator new (size_t size, MEM_ROOT *mem_root) throw ()
static void	operator delete (void *ptr, size_t size)
static void	operator delete (void *ptr, MEM_ROOT *mem_root)
static void	operator delete[] (void *ptr, MEM_ROOT *mem_root)
static void	operator delete[] (void *ptr, size_t size)

Detailed Description

A base class for everything that can be set with SET command. It's similar to Items, an instance of this is created by the parser for every assigmnent in SET (or elsewhere, e.g. in SELECT).

Definition at line 193 of file set_var.h.

Member Function Documentation

virtual bool set_var_base::is_var_optimizer_trace ( ) const

inlinevirtual

Returns

whether this variable is @@optimizer_trace.

Definition at line 203 of file set_var.h.

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

• sql/set_var.h