item_func.cc File Reference

This file defines all numerical functions. More...

#include "my_global.h"
#include "sql_priv.h"
#include "sql_class.h"
#include "set_var.h"
#include "rpl_slave.h"
#include "sql_show.h"
#include "strfunc.h"
#include "sql_parse.h"
#include "sql_acl.h"
#include "mysqld.h"
#include "rpl_mi.h"
#include "sql_time.h"
#include <m_ctype.h>
#include <hash.h>
#include <time.h>
#include <ft_global.h>
#include <my_bit.h>
#include "sp_head.h"
#include "sp_rcontext.h"
#include "sp.h"
#include "debug_sync.h"
#include <mysql/plugin.h>
#include <mysql/service_thd_wait.h>
#include "rpl_gtid.h"

Classes
class	User_level_lock
class	Interruptible_wait
Defines
#define	get_sys_var_safe(type)
Functions
bool	check_reserved_words (LEX_STRING *name)
bool	eval_const_cond (Item *cond)
double	my_double_round (double value, longlong dec, bool dec_unsigned, bool truncate)
uchar *	ull_get_key (const User_level_lock *ull, size_t *length, my_bool not_used __attribute__((unused)))
void	item_user_lock_init (void)
void	item_user_lock_free (void)
void	item_user_lock_release (User_level_lock *ull)
Item *	get_system_var (THD *thd, enum_var_type var_type, LEX_STRING name, LEX_STRING component)
void	my_missing_function_error (const LEX_STRING &token, const char *func_name)
void	uuid_short_init ()
Variables
mysql_mutex_t	LOCK_user_locks
ulonglong	uuid_value

---

Detailed Description

This file defines all numerical functions.

---

Define Documentation

#define get_sys_var_safe

(

type

)

Value:

do { \
  type value; \
  mysql_mutex_lock(&LOCK_global_system_variables); \
  value= *(type*) var->value_ptr(thd, var_type, &component); \
  mysql_mutex_unlock(&LOCK_global_system_variables); \
  cache_present |= GET_SYS_VAR_CACHE_LONG; \
  used_query_id= thd->query_id; \
  cached_llval= null_value ? 0 : (longlong) value; \
  cached_null_value= null_value; \
  return cached_llval; \
} while (0)

---

Function Documentation

bool eval_const_cond

(

Item *

cond

)

Returns:

TRUE if item is a constant

Item* get_system_var	(	THD *	thd,
		enum_var_type	var_type,
		LEX_STRING	name,
		LEX_STRING	component
	)

Return value of an system variable base[.name] as a constant item.

Parameters:

thd	Thread handler
var_type	global / session
name	Name of base or system variable
component	Component.

Note:

If component.str = 0 then the variable name is in 'name'

Returns:

• 0 : error
• # : constant item