system_variables_bits.h File Reference

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Classes
struct	st_mysql_value

Macros
#define	PLUGIN_VAR_BOOL   0x0001
	bool variable. More...
#define	PLUGIN_VAR_INT   0x0002
	int variable. More...
#define	PLUGIN_VAR_LONG   0x0003
	long variable Use INTEGRAL_CHECK_ARG More...
#define	PLUGIN_VAR_LONGLONG   0x0004
	longlong variable. More...
#define	PLUGIN_VAR_STR   0x0005
	char * variable. More...
#define	PLUGIN_VAR_ENUM   0x0006
	Enum variable. More...
#define	PLUGIN_VAR_SET   0x0007
	A set variable. More...
#define	PLUGIN_VAR_DOUBLE   0x0008
	double variable. More...
#define	PLUGIN_VAR_UNSIGNED   0x0080
	The variable is unsigned. More...
#define	PLUGIN_VAR_THDLOCAL   0x0100
	Variable is per-connection. More...
#define	PLUGIN_VAR_READONLY   0x0200
	Server variable is read only. More...
#define	PLUGIN_VAR_NOSYSVAR   0x0400
	Not a server variable. More...
#define	PLUGIN_VAR_NOCMDOPT   0x0800
	Not a command line option. More...
#define	PLUGIN_VAR_NOCMDARG   0x1000
	No argument for cmd line. More...
#define	PLUGIN_VAR_RQCMDARG   0x0000
	Argument required for cmd line. More...
#define	PLUGIN_VAR_OPCMDARG   0x2000
	Argument optional for cmd line. More...
#define	PLUGIN_VAR_NODEFAULT   0x4000
	SET DEFAULT is prohibited. More...
#define	PLUGIN_VAR_MEMALLOC   0x8000
	String needs memory allocated. More...
#define	PLUGIN_VAR_NOPERSIST    0x10000
	SET PERSIST_ONLY is prohibited for read only variables. More...
#define	PLUGIN_VAR_PERSIST_AS_READ_ONLY   0x20000
#define	PLUGIN_VAR_INVISIBLE   0x40000
	Variable should not be shown. More...
#define	PLUGIN_VAR_SENSITIVE   0x80000
	Sensitive variable. More...
#define	MYSQL_VALUE_TYPE_STRING   0
	st_mysql_value struct for reading values from mysqld. More...
#define	MYSQL_VALUE_TYPE_REAL   1
#define	MYSQL_VALUE_TYPE_INT   2

Macro Definition Documentation

MYSQL_VALUE_TYPE_INT

#define MYSQL_VALUE_TYPE_INT   2

MYSQL_VALUE_TYPE_REAL

#define MYSQL_VALUE_TYPE_REAL   1

MYSQL_VALUE_TYPE_STRING

#define MYSQL_VALUE_TYPE_STRING   0

st_mysql_value struct for reading values from mysqld.

Used by server variables framework to parse user-provided values. Will be used for arguments when implementing UDFs.

Note that val_str() returns a string in temporary memory that will be freed at the end of statement. Copy the string if you need it to persist.