system_variables Struct Reference

Collaboration diagram for system_variables:

Public Attributes
ulong	dynamic_variables_version
char *	dynamic_variables_ptr
uint	dynamic_variables_head
uint	dynamic_variables_size
LIST *	dynamic_variables_allocs
ulonglong	max_heap_table_size
ulonglong	tmp_table_size
ulonglong	long_query_time
my_bool	end_markers_in_json
ulonglong	optimizer_switch
ulonglong	optimizer_trace
	bitmap to tune optimizer tracing
ulonglong	optimizer_trace_features
	bitmap to select features to trace
long	optimizer_trace_offset
long	optimizer_trace_limit
ulong	optimizer_trace_max_mem_size
sql_mode_t	sql_mode
	which non-standard SQL behaviour should be enabled
ulonglong	option_bits
	OPTION_xxx constants, e.g. OPTION_PROFILING.
ha_rows	select_limit
ha_rows	max_join_size
ulong	auto_increment_increment
ulong	auto_increment_offset
ulong	bulk_insert_buff_size
uint	eq_range_index_dive_limit
ulong	join_buff_size
ulong	lock_wait_timeout
ulong	max_allowed_packet
ulong	max_error_count
ulong	max_length_for_sort_data
ulong	max_sort_length
ulong	max_tmp_tables
ulong	max_insert_delayed_threads
ulong	min_examined_row_limit
ulong	multi_range_count
ulong	myisam_repair_threads
ulong	myisam_sort_buff_size
ulong	myisam_stats_method
ulong	net_buffer_length
ulong	net_interactive_timeout
ulong	net_read_timeout
ulong	net_retry_count
ulong	net_wait_timeout
ulong	net_write_timeout
ulong	optimizer_prune_level
ulong	optimizer_search_depth
ulong	preload_buff_size
ulong	profiling_history_size
ulong	read_buff_size
ulong	read_rnd_buff_size
ulong	div_precincrement
ulong	sortbuff_size
ulong	max_sp_recursion_depth
ulong	default_week_format
ulong	max_seeks_for_key
ulong	range_alloc_block_size
ulong	query_alloc_block_size
ulong	query_prealloc_size
ulong	trans_alloc_block_size
ulong	trans_prealloc_size
ulong	group_concat_max_len
ulong	binlog_format
	binlog format for this thd (see enum_binlog_format)
my_bool	binlog_direct_non_trans_update
ulong	binlog_row_image
my_bool	sql_log_bin
ulong	completion_type
ulong	query_cache_type
ulong	tx_isolation
ulong	updatable_views_with_limit
uint	max_user_connections
my_thread_id	pseudo_thread_id
my_bool	tx_read_only
my_bool	low_priority_updates
my_bool	new_mode
my_bool	query_cache_wlock_invalidate
my_bool	engine_condition_pushdown
my_bool	keep_files_on_create
my_bool	old_alter_table
uint	old_passwords
my_bool	big_tables
plugin_ref	table_plugin
plugin_ref	temp_table_plugin
const CHARSET_INFO *	character_set_filesystem
const CHARSET_INFO *	character_set_client
const CHARSET_INFO *	character_set_results
const CHARSET_INFO *	collation_server
const CHARSET_INFO *	collation_database
const CHARSET_INFO *	collation_connection
MY_LOCALE *	lc_messages
MY_LOCALE *	lc_time_names
Time_zone *	time_zone
my_bool	explicit_defaults_for_timestamp
my_bool	sysdate_is_now
my_bool	binlog_rows_query_log_events
double	long_query_time_double
my_bool	pseudo_slave_mode
Gtid_specification	gtid_next
Gtid_set_or_null	gtid_next_list

Detailed Description

Definition at line 416 of file sql_class.h.

Member Data Documentation

my_thread_id system_variables::pseudo_thread_id

In slave thread we need to know in behalf of which thread the query is being run to replicate temp tables properly

Definition at line 501 of file sql_class.h.

my_bool system_variables::tx_read_only

Default transaction access mode. READ ONLY (true) or READ WRITE (false).

Definition at line 505 of file sql_class.h.

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

• sql/sql_class.h