MySQL  8.0.16
Source Code Documentation
Query_log_event Class Reference

A Query event is written to the binary log whenever the database is modified on the master, unless row based logging is used. More...

#include <log_event.h>

Inheritance diagram for Query_log_event:
binary_log::Query_event Log_event binary_log::Binary_log_event Execute_load_query_log_event

Public Member Functions

 Query_log_event (THD *thd_arg, const char *query_arg, size_t query_length, bool using_trans, bool immediate, bool suppress_use, int error, bool ignore_command=false)
 Creates a Query Log Event. More...
 
const char * get_db () override
 
virtual uint8 get_mts_dbs (Mts_db_names *arg, Rpl_filter *rpl_filter) override
 
void attach_temp_tables_worker (THD *, const Relay_log_info *)
 Associating slave Worker thread to a subset of temporary tables. More...
 
void detach_temp_tables_worker (THD *, const Relay_log_info *)
 Dissociating slave Worker thread from its thd->temporary_tables to possibly update the involved entries of db-to-worker hash with new values of temporary_tables. More...
 
virtual uchar mts_number_dbs () override
 
int pack_info (Protocol *protocol) override
 This (which is used only for SHOW BINLOG EVENTS) could be updated to print SET @session_var=. More...
 
 Query_log_event ()
 The simplest constructor that could possibly work. More...
 
 Query_log_event (const char *buf, const Format_description_event *description_event, Log_event_type event_type)
 This is used by the SQL slave thread to prepare the event before execution. More...
 
 ~Query_log_event () override
 
bool write (Basic_ostream *ostream) override
 Query_log_event::write(). More...
 
virtual bool write_post_header_for_derived (Basic_ostream *)
 
virtual ulong get_post_header_size_for_derived ()
 
virtual enum_skip_reason do_shall_skip (Relay_log_info *rli) override
 Decide if this event shall be skipped or not and the reason for skipping it. More...
 
virtual int do_apply_event (Relay_log_info const *rli) override
 Primitive to apply an event to the database. More...
 
virtual int do_update_pos (Relay_log_info *rli) override
 Advance relay log coordinates. More...
 
int do_apply_event (Relay_log_info const *rli, const char *query_arg, size_t q_len_arg)
 
bool is_trans_keyword () const
 
bool is_sbr_logging_format () const override
 When a query log event contains a non-transaction control statement, we assume that it is changing database content (DML) and was logged using binlog_format=statement. More...
 
bool starts_group () const override
 Notice, DDL queries are logged without BEGIN/COMMIT parentheses and identification of such single-query group occures within logics of get_slave_worker(). More...
 
virtual bool ends_group () const override
 
bool is_query_prefix_match (const char *pattern, uint p_len)
 
- Public Member Functions inherited from binary_log::Query_event
 Query_event (const char *query_arg, const char *catalog_arg, const char *db_arg, uint32_t query_length, unsigned long thread_id_arg, unsigned long long sql_mode_arg, unsigned long auto_increment_increment_arg, unsigned long auto_increment_offset_arg, unsigned int number, unsigned long long table_map_for_update_arg, int errcode)
 The constructor will be used while creating a Query_event, to be written to the binary log. More...
 
 Query_event (const char *buf, const Format_description_event *fde, Log_event_type event_type)
 The constructor receives a buffer and instantiates a Query_event filled in with the data from the buffer. More...
 
 Query_event (Log_event_type type_arg=QUERY_EVENT)
 The simplest constructor that could possibly work. More...
 
virtual ~Query_event ()
 
- Public Member Functions inherited from binary_log::Binary_log_event
virtual ~Binary_log_event ()=0
 
 Binary_log_event (const Binary_log_event &)=default
 
 Binary_log_event (Binary_log_event &&)=default
 
Binary_log_eventoperator= (const Binary_log_event &)=default
 
Binary_log_eventoperator= (Binary_log_event &&)=default
 
enum Log_event_type get_event_type () const
 Helper method. More...
 
const Log_event_headerheader () const
 Return a const pointer to the header of the log event. More...
 
Log_event_headerheader ()
 Return a non-const pointer to the header of the log event. More...
 
const Log_event_footerfooter () const
 Return a const pointer to the footer of the log event. More...
 
Log_event_footerfooter ()
 Return a non-const pointer to the footer of the log event. More...
 
Event_readerreader ()
 Returns a reference to the event Event_reader object. More...
 
- Public Member Functions inherited from Log_event
 Log_event (Log_event_header *header, Log_event_footer *footer, enum_event_cache_type cache_type_arg, enum_event_logging_type logging_type_arg)
 This minimal constructor is for when you are not even sure that there is a valid THD. More...
 
 Log_event (THD *thd_arg, uint16 flags_arg, enum_event_cache_type cache_type_arg, enum_event_logging_type logging_type_arg, Log_event_header *header, Log_event_footer *footer)
 
int net_send (Protocol *protocol, const char *log_name, my_off_t pos)
 Only called by SHOW BINLOG EVENTS. More...
 
void * operator new (size_t size)
 
bool wrapper_my_b_safe_write (Basic_ostream *ostream, const uchar *buf, size_t data_length)
 Write the given buffer to the given output stream, updating the checksum if checksums are enabled. More...
 
time_t get_time ()
 Prints a "session_var=value" string. More...
 
virtual bool write_data_header (Basic_ostream *)
 
virtual bool write_data_body (Basic_ostream *)
 
Log_event_type get_type_code () const
 
virtual bool is_rbr_logging_format () const
 Return true if the event has to be logged using RBR for DMLs. More...
 
bool is_valid ()
 
void set_artificial_event ()
 
void set_relay_log_event ()
 
bool is_artificial_event () const
 
bool is_relay_log_event () const
 
bool is_ignorable_event () const
 
bool is_no_filter_event () const
 
bool is_using_trans_cache () const
 
bool is_using_stmt_cache () const
 
bool is_using_immediate_logging () const
 
 Log_event (Log_event_header *header, Log_event_footer *footer)
 
virtual ~Log_event ()
 
void register_temp_buf (char *buf, bool free_in_destructor=true)
 
void free_temp_buf ()
 
virtual size_t get_data_size ()
 
const char * get_type_str () const
 Returns the human readable name of this event's type. More...
 
bool is_mts_sequential_exec ()
 Is called from get_mts_execution_mode() to. More...
 
bool contains_partition_info (bool)
 
bool is_mts_group_isolated ()
 
int apply_event (Relay_log_info *rli)
 Apply the event to the database. More...
 
int apply_gtid_event (Relay_log_info *rli)
 Apply the GTID event in curr_group_data to the database. More...
 
int update_pos (Relay_log_info *rli)
 Update the relay log position. More...
 
enum_skip_reason shall_skip (Relay_log_info *rli)
 Decide if the event shall be skipped, and the reason for skipping it. More...
 
virtual int do_apply_event_worker (Slave_worker *w)
 

Static Public Member Functions

static size_t get_query (const char *buf, size_t length, const Format_description_event *fd_event, const char **query_arg)
 Return the query string pointer (and its size) from a Query log event using only the event buffer (we don't instantiate a Query_log_event object for this). More...
 
- Static Public Member Functions inherited from Log_event
static void init_show_field_list (List< Item > *field_list)
 init_show_field_list() prepares the column names and types for the output of SHOW BINLOG EVENTS; it is used only by SHOW BINLOG EVENTS. More...
 
static void operator delete (void *ptr, size_t)
 
static void * operator new (size_t, void *ptr)
 
static void operator delete (void *, void *)
 
static const char * get_type_str (Log_event_type type)
 Returns the human readable name of the given event type. More...
 

Public Attributes

my_thread_id slave_proxy_id
 
bool rollback_injected_by_coord = false
 
True if this is a ROLLBACK event injected by the mts coordinator to finish a group corresponding to a partial transaction in the relay log. More...
 
bool has_ddl_committed
 The flag indicates whether the DDL query has been (already) committed or not. More...
 
- Public Attributes inherited from binary_log::Query_event
const char * query
 
const char * db
 
const char * catalog
 
const char * time_zone_str
 
uint32_t thread_id
 
uint32_t query_exec_time
 
size_t db_len
 
uint16_t error_code
 
uint16_t status_vars_len
 
size_t q_len
 
bool flags2_inited
 
bool sql_mode_inited
 
bool charset_inited
 
uint32_t flags2
 
uint64_t sql_mode
 
uint16_t auto_increment_increment
 
uint16_t auto_increment_offset
 
char charset [6]
 
size_t time_zone_len
 
size_t catalog_len
 
uint16_t lc_time_names_number
 
uint16_t charset_database_number
 
uint64_t table_map_for_update
 
enum binary_log::Query_event::enum_ternary explicit_defaults_ts
 
unsigned char mts_accessed_dbs
 
char mts_accessed_db_names [MAX_DBS_IN_EVENT_MTS][NAME_LEN]
 
uint64_t ddl_xid
 
uint16_t default_collation_for_utf8mb4_number
 
uint8_t sql_require_primary_key
 
uint8_t default_table_encryption
 
- Public Attributes inherited from Log_event
char * temp_buf
 
bool m_free_temp_buf_in_destructor
 
ulong exec_time
 
uint32 server_id
 
ulong rbr_exec_mode
 A storage to cache the global system variable's value. More...
 
enum_event_cache_type event_cache_type
 Defines the type of the cache, if any, where the event will be stored before being flushed to disk. More...
 
enum_event_logging_type event_logging_type
 Defines when information, i.e. More...
 
ha_checksum crc
 Placeholder for event checksum while writing to binlog. More...
 
ulong mts_group_idx
 Index in rli->gaq array to indicate a group that this event is purging. More...
 
binary_log::Log_event_headercommon_header
 
The Log_event_header class contains the variable present in the common header More...
 
binary_log::Log_event_footercommon_footer
 
The Log_event_footer class contains the variable present in the common footer. More...
 
Relay_log_infoworker
 MTS: associating the event with either an assigned Worker or Coordinator. More...
 
ulonglong future_event_relay_log_pos
 A copy of the main rli value stored into event to pass to MTS worker rli. More...
 
THDthd
 
db_worker_hash_entrymts_assigned_partitions [MAX_DBS_IN_EVENT_MTS]
 Partition info associate with event to deliver to MTS event applier. More...
 

Protected Attributes

Log_event_header::Byte * data_buf
 
- Protected Attributes inherited from binary_log::Query_event
const char * user
 
size_t user_len
 
const char * host
 
size_t host_len
 
unsigned long data_len
 

Private Attributes

bool need_sql_require_primary_key {false}
 Whether or not the statement represented by this event requires Q_SQL_REQUIRE_PRIMARY_KEY to be logged along aside. More...
 
bool needs_default_table_encryption {false}
 Whether or not the statement represented by this event requires Q_DEFAULT_TABLE_ENCRYPTION to be logged along aside. More...
 

Additional Inherited Members

- Public Types inherited from binary_log::Query_event
enum  Query_event_post_header_offset {
  Q_THREAD_ID_OFFSET = 0, Q_EXEC_TIME_OFFSET = 4, Q_DB_LEN_OFFSET = 8, Q_ERR_CODE_OFFSET = 9,
  Q_STATUS_VARS_LEN_OFFSET = 11, Q_DATA_OFFSET = QUERY_HEADER_LEN
}
 query event post-header More...
 
enum  Query_event_status_vars {
  Q_FLAGS2_CODE = 0, Q_SQL_MODE_CODE, Q_CATALOG_CODE, Q_AUTO_INCREMENT,
  Q_CHARSET_CODE, Q_TIME_ZONE_CODE, Q_CATALOG_NZ_CODE, Q_LC_TIME_NAMES_CODE,
  Q_CHARSET_DATABASE_CODE, Q_TABLE_MAP_FOR_UPDATE_CODE, Q_MASTER_DATA_WRITTEN_CODE, Q_INVOKER,
  Q_UPDATED_DB_NAMES, Q_MICROSECONDS, Q_COMMIT_TS, Q_COMMIT_TS2,
  Q_EXPLICIT_DEFAULTS_FOR_TIMESTAMP, Q_DDL_LOGGED_WITH_XID, Q_DEFAULT_COLLATION_FOR_UTF8MB4, Q_SQL_REQUIRE_PRIMARY_KEY,
  Q_DEFAULT_TABLE_ENCRYPTION
}
 
enum  enum_ternary { TERNARY_UNSET, TERNARY_OFF, TERNARY_ON }
 
- Public Types inherited from binary_log::Binary_log_event
enum  enum_post_header_length {
  QUERY_HEADER_MINIMAL_LEN = (4 + 4 + 1 + 2), QUERY_HEADER_LEN = (QUERY_HEADER_MINIMAL_LEN + 2), STOP_HEADER_LEN = 0, START_V3_HEADER_LEN = (2 + ST_SERVER_VER_LEN + 4),
  ROTATE_HEADER_LEN = 8, INTVAR_HEADER_LEN = 0, APPEND_BLOCK_HEADER_LEN = 4, DELETE_FILE_HEADER_LEN = 4,
  RAND_HEADER_LEN = 0, USER_VAR_HEADER_LEN = 0, FORMAT_DESCRIPTION_HEADER_LEN = (START_V3_HEADER_LEN + 1 + LOG_EVENT_TYPES), XID_HEADER_LEN = 0,
  BEGIN_LOAD_QUERY_HEADER_LEN = APPEND_BLOCK_HEADER_LEN, ROWS_HEADER_LEN_V1 = 8, TABLE_MAP_HEADER_LEN = 8, EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN = (4 + 4 + 4 + 1),
  EXECUTE_LOAD_QUERY_HEADER_LEN, INCIDENT_HEADER_LEN = 2, HEARTBEAT_HEADER_LEN = 0, IGNORABLE_HEADER_LEN = 0,
  ROWS_HEADER_LEN_V2 = 10, TRANSACTION_CONTEXT_HEADER_LEN = 18, VIEW_CHANGE_HEADER_LEN = 52, XA_PREPARE_HEADER_LEN = 0
}
 The lengths for the fixed data part of each event. More...
 
- Public Types inherited from Log_event
enum  enum_skip_reason { EVENT_SKIP_NOT, EVENT_SKIP_IGNORE, EVENT_SKIP_COUNT }
 Enumeration of what kinds of skipping (and non-skipping) that can occur when the slave executes an event. More...
 
- Static Public Attributes inherited from binary_log::Binary_log_event
static const int LOG_EVENT_TYPES = (ENUM_END_EVENT - 1)
 
- Protected Types inherited from Log_event
enum  enum_event_cache_type {
  EVENT_INVALID_CACHE = 0, EVENT_STMT_CACHE, EVENT_TRANSACTIONAL_CACHE, EVENT_NO_CACHE,
  EVENT_CACHE_COUNT
}
 
enum  enum_event_logging_type { EVENT_INVALID_LOGGING = 0, EVENT_NORMAL_LOGGING, EVENT_IMMEDIATE_LOGGING, EVENT_CACHE_LOGGING_COUNT }
 
- Protected Member Functions inherited from binary_log::Query_event
int fill_data_buf (unsigned char *dest, unsigned long len)
 Layout for the data buffer is as follows. More...
 
- Protected Member Functions inherited from binary_log::Binary_log_event
 Binary_log_event (Log_event_type type_code)
 This constructor is used to initialize the type_code of header object m_header. More...
 
 Binary_log_event (const char **buf, const Format_description_event *fde)
 This constructor will create a new object of Log_event_header and initialize the variable m_header, which in turn will be used to initialize Log_event's member common_header. More...
 
- Protected Member Functions inherited from Log_event
uint32 write_header_to_memory (uchar *buf)
 Writes the common header of this event to the given memory buffer. More...
 
bool write_header (Basic_ostream *ostream, size_t data_length)
 Writes the common-header of this event to the given output stream and updates the checksum. More...
 
bool write_footer (Basic_ostream *ostream)
 
bool need_checksum ()
 A decider of whether to trigger checksum computation or not. More...
 
enum_skip_reason continue_group (Relay_log_info *rli)
 Helper function to ignore an event w.r.t. More...
 

Detailed Description

A Query event is written to the binary log whenever the database is modified on the master, unless row based logging is used.

Query_log_event is created for logging, and is called after an update to the database is done. It is used when the server acts as the master.

Virtual inheritance is required here to handle the diamond problem in the class Execute_load_query_log_event. The diamond structure is explained in Excecute_load_query_log_event

Constructor & Destructor Documentation

◆ Query_log_event() [1/3]

Query_log_event::Query_log_event ( THD thd_arg,
const char *  query_arg,
size_t  query_length,
bool  using_trans,
bool  immediate,
bool  suppress_use,
int  errcode,
bool  ignore_cmd_internals = false 
)

Creates a Query Log Event.

Parameters
thd_argThread handle
query_argArray of char representing the query
query_lengthSize of the 'query_arg' array
using_transIndicates that there are transactional changes.
immediateAfter being written to the binary log, the event must be flushed immediately. This indirectly implies the stmt-cache.
suppress_useSuppress the generation of 'USE' statements
errcodeThe error code of the query
ignore_cmd_internalsIgnore user's statement, i.e. lex information, while deciding which cache must be used.

◆ Query_log_event() [2/3]

Query_log_event::Query_log_event ( )

The simplest constructor that could possibly work.

This is used for creating static objects that have a special meaning and are invisible to the log.

◆ Query_log_event() [3/3]

Query_log_event::Query_log_event ( const char *  buf,
const Format_description_event description_event,
Log_event_type  event_type 
)

This is used by the SQL slave thread to prepare the event before execution.

◆ ~Query_log_event()

Query_log_event::~Query_log_event ( )
inlineoverride

Member Function Documentation

◆ attach_temp_tables_worker()

void Query_log_event::attach_temp_tables_worker ( THD thd_arg,
const Relay_log_info rli 
)

Associating slave Worker thread to a subset of temporary tables.

Parameters
thd_argTHD instance pointer
rliRelay_log_info of the worker

◆ detach_temp_tables_worker()

void Query_log_event::detach_temp_tables_worker ( THD thd_arg,
const Relay_log_info rli 
)

Dissociating slave Worker thread from its thd->temporary_tables to possibly update the involved entries of db-to-worker hash with new values of temporary_tables.

Parameters
thd_argTHD instance pointer
rlirelay log info of the worker thread

◆ do_apply_event() [1/2]

int Query_log_event::do_apply_event ( Relay_log_info const *  rli)
overridevirtual

Primitive to apply an event to the database.

This is where the change to the database is made.

Note
The primitive is protected instead of private, since there is a hierarchy of actions to be performed in some cases.
See also
Format_description_log_event::do_apply_event()
Parameters
rliPointer to relay log info structure
Return values
0Event applied successfully
errnoError code if event application failed

Reimplemented from Log_event.

Reimplemented in Execute_load_query_log_event.

◆ do_apply_event() [2/2]

int Query_log_event::do_apply_event ( Relay_log_info const *  rli,
const char *  query_arg,
size_t  q_len_arg 
)

Something like:

if ((uint32) affected_in_event != (uint32) affected_on_slave)
{
sql_print_error("Slave: did not get the expected number of affected \
rows running query from master - expected %d, got %d (this numbers \
should have matched modulo 4294967296).", 0, ...);
thd->query_error = 1;
}

We may also want an option to tell the slave to ignore "affected" mismatch. This mismatch could be implemented with a new ER_ code, and to ignore it you would use –slave-skip-errors...

The following failure injecion works in cooperation with tests setting @global.debug= 'd,stop_slave_middle_group'. The sql thread receives the killed status and will proceed to shutdown trying to finish incomplete events group.

◆ do_shall_skip()

Log_event::enum_skip_reason Query_log_event::do_shall_skip ( Relay_log_info rli)
overridevirtual

Decide if this event shall be skipped or not and the reason for skipping it.

The default implementation decide that the event shall be skipped if either:

  • the server id of the event is the same as the server id of the server and rli->replicate_same_server_id is true, or
  • if rli->slave_skip_counter is greater than zero.
See also
do_apply_event
do_update_pos
Return values
Log_event::EVENT_SKIP_NOTThe event shall not be skipped and should be applied.
Log_event::EVENT_SKIP_IGNOREThe event shall be skipped by just ignoring it, i.e., the slave skip counter shall not be changed. This happends if, for example, the originating server id of the event is the same as the server id of the slave.
Log_event::EVENT_SKIP_COUNTThe event shall be skipped because the slave skip counter was non-zero. The caller shall decrease the counter by one.

Reimplemented from Log_event.

◆ do_update_pos()

int Query_log_event::do_update_pos ( Relay_log_info rli)
overridevirtual

Advance relay log coordinates.

This function is called to advance the relay log coordinates to just after the event. It is essential that both the relay log coordinate and the group log position is updated correctly, since this function is used also for skipping events.

Normally, each implementation of do_update_pos() shall:

  • Update the event position to refer to the position just after the event.
  • Update the group log position to refer to the position just after the event if the event is last in a group
Parameters
rliPointer to relay log info structure
Return values
0Coordinates changed successfully
errnoError code if advancing failed (usually just 1). Observe that handler errors are returned by the do_apply_event() function, and not by this one.

Reimplemented from Log_event.

◆ ends_group()

virtual bool Query_log_event::ends_group ( ) const
inlineoverridevirtual
Returns
true if the event ends a group (transaction) false otherwise

Reimplemented from Log_event.

◆ get_db()

const char* Query_log_event::get_db ( )
inlineoverridevirtual

Reimplemented from Log_event.

◆ get_mts_dbs()

virtual uint8 Query_log_event::get_mts_dbs ( Mts_db_names arg,
Rpl_filter rpl_filter 
)
inlineoverridevirtual
Parameters
[out]argpointer to a struct containing char* array pointers be filled in and the number of filled instances. In case the number exceeds MAX_DBS_IN_EVENT_MTS, the overfill is indicated with assigning the number to OVER_MAX_DBS_IN_EVENT_MTS.
rpl_filterpointer to a replication filter.
Returns
number of databases in the array or OVER_MAX_DBS_IN_EVENT_MTS.

Reimplemented from Log_event.

◆ get_post_header_size_for_derived()

virtual ulong Query_log_event::get_post_header_size_for_derived ( )
inlinevirtual

Reimplemented in Execute_load_query_log_event.

◆ get_query()

size_t Query_log_event::get_query ( const char *  buf,
size_t  length,
const Format_description_event fd_event,
const char **  query_arg 
)
static

Return the query string pointer (and its size) from a Query log event using only the event buffer (we don't instantiate a Query_log_event object for this).

Parameters
bufPointer to the event buffer.
lengthThe size of the event buffer.
fd_eventThe description event of the master which logged the event.
[out]query_argThe pointer to receive the query pointer.
Returns
The size of the query.

◆ is_query_prefix_match()

bool Query_log_event::is_query_prefix_match ( const char *  pattern,
uint  p_len 
)
inline

◆ is_sbr_logging_format()

bool Query_log_event::is_sbr_logging_format ( ) const
inlineoverridevirtual

When a query log event contains a non-transaction control statement, we assume that it is changing database content (DML) and was logged using binlog_format=statement.

Returns
True the event represents a statement that was logged using SBR that can change database content. False for transaction control statements.

Reimplemented from Log_event.

Reimplemented in Execute_load_query_log_event.

◆ is_trans_keyword()

bool Query_log_event::is_trans_keyword ( ) const
inline

◆ mts_number_dbs()

virtual uchar Query_log_event::mts_number_dbs ( )
inlineoverridevirtual

Reimplemented from Log_event.

◆ pack_info()

int Query_log_event::pack_info ( Protocol protocol)
overridevirtual

This (which is used only for SHOW BINLOG EVENTS) could be updated to print SET @session_var=.

But this is not urgent, as SHOW BINLOG EVENTS is only an information, it does not produce suitable queries to replay (for example it does not print LOAD DATA INFILE).

Reimplemented from Log_event.

Reimplemented in Execute_load_query_log_event.

◆ starts_group()

bool Query_log_event::starts_group ( ) const
inlineoverridevirtual

Notice, DDL queries are logged without BEGIN/COMMIT parentheses and identification of such single-query group occures within logics of get_slave_worker().

Reimplemented from Log_event.

◆ write()

bool Query_log_event::write ( Basic_ostream ostream)
overridevirtual

Query_log_event::write().

Note
In this event we have to modify the header to have the correct EVENT_LEN_OFFSET as we don't yet know how many status variables we will print!

Reimplemented from Log_event.

◆ write_post_header_for_derived()

virtual bool Query_log_event::write_post_header_for_derived ( Basic_ostream )
inlinevirtual

Reimplemented in Execute_load_query_log_event.

Member Data Documentation

◆ data_buf

Log_event_header::Byte* Query_log_event::data_buf
protected

◆ has_ddl_committed

bool Query_log_event::has_ddl_committed

The flag indicates whether the DDL query has been (already) committed or not.

It's initialized as OFF at the event instantiation, flips ON when the DDL transaction has been committed with all its possible extra statement due to replication or GTID.

The flag status is also checked in few places to catch uncommitted transactions which can normally happen due to filtering out. In such a case the commit is deferred to Log_event::do_update_pos().

◆ need_sql_require_primary_key

bool Query_log_event::need_sql_require_primary_key {false}
private

Whether or not the statement represented by this event requires Q_SQL_REQUIRE_PRIMARY_KEY to be logged along aside.

◆ needs_default_table_encryption

bool Query_log_event::needs_default_table_encryption {false}
private

Whether or not the statement represented by this event requires Q_DEFAULT_TABLE_ENCRYPTION to be logged along aside.

◆ rollback_injected_by_coord

bool Query_log_event::rollback_injected_by_coord = false


True if this is a ROLLBACK event injected by the mts coordinator to finish a group corresponding to a partial transaction in the relay log.

False otherwise and by default, as it must be explicitly set to true by the coordinator.

◆ slave_proxy_id

my_thread_id Query_log_event::slave_proxy_id

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