Gecko [ www.corporacionhdm.com.pe ]

Name	Size	Permission	Date
atomic	[ DIR ]	drwxr-xr-x	2025-02-25 11:37
aligned.h	1.11 KB	-rw-r--r--	2025-02-08 16:02
aria_backup.h	1.51 KB	-rw-r--r--	2025-02-08 16:02
assume_aligned.h	2.29 KB	-rw-r--r--	2025-02-08 16:02
authors.h	9.9 KB	-rw-r--r--	2025-02-08 16:02
backup.h	1.66 KB	-rw-r--r--	2025-02-08 16:02
bounded_queue.h	5.95 KB	-rw-r--r--	2025-02-08 16:02
client_settings.h	1.89 KB	-rw-r--r--	2025-02-08 16:02
compat56.h	2.23 KB	-rw-r--r--	2025-02-08 16:02
config.h	14.23 KB	-rw-r--r--	2025-02-08 16:02
contributors.h	4.76 KB	-rw-r--r--	2025-02-08 16:02
create_options.h	4.42 KB	-rw-r--r--	2025-02-08 16:02
create_tmp_table.h	2.74 KB	-rw-r--r--	2025-02-08 16:02
cset_narrowing.h	3.88 KB	-rw-r--r--	2025-02-08 16:02
custom_conf.h	1.06 KB	-rw-r--r--	2025-02-08 16:02
datadict.h	1.66 KB	-rw-r--r--	2025-02-08 16:02
ddl_log.h	12.39 KB	-rw-r--r--	2025-02-08 16:02
debug.h	1.21 KB	-rw-r--r--	2025-02-08 16:02
debug_sync.h	2 KB	-rw-r--r--	2025-02-08 16:02
derived_handler.h	2.32 KB	-rw-r--r--	2025-02-08 16:02
derror.h	980 B	-rw-r--r--	2025-02-08 16:02
des_key_file.h	1.21 KB	-rw-r--r--	2025-02-08 16:02
discover.h	1.53 KB	-rw-r--r--	2025-02-08 16:02
dur_prop.h	1.06 KB	-rw-r--r--	2025-02-08 16:02
embedded_priv.h	1.69 KB	-rw-r--r--	2025-02-08 16:02
event_data_objects.h	4.09 KB	-rw-r--r--	2025-02-08 16:02
event_db_repository.h	3.56 KB	-rw-r--r--	2025-02-08 16:02
event_parse_data.h	2.83 KB	-rw-r--r--	2025-02-08 16:02
event_queue.h	3.36 KB	-rw-r--r--	2025-02-08 16:02
event_scheduler.h	3.21 KB	-rw-r--r--	2025-02-08 16:02
events.h	4.59 KB	-rw-r--r--	2025-02-08 16:02
field.h	215.25 KB	-rw-r--r--	2025-02-08 16:02
field_comp.h	1.15 KB	-rw-r--r--	2025-02-08 16:02
filesort.h	7.11 KB	-rw-r--r--	2025-02-08 16:02
filesort_utils.h	8 KB	-rw-r--r--	2025-02-08 16:02
ft_global.h	3.04 KB	-rw-r--r--	2025-02-08 16:02
gcalc_slicescan.h	16.87 KB	-rw-r--r--	2025-02-08 16:02
gcalc_tools.h	11.62 KB	-rw-r--r--	2025-02-08 16:02
grant.h	2.69 KB	-rw-r--r--	2025-02-08 16:02
group_by_handler.h	3.45 KB	-rw-r--r--	2025-02-08 16:02
gstream.h	2.38 KB	-rw-r--r--	2025-02-08 16:02
ha_handler_stats.h	2.28 KB	-rw-r--r--	2025-02-08 16:02
ha_partition.h	62.9 KB	-rw-r--r--	2025-02-08 16:02
ha_sequence.h	5.95 KB	-rw-r--r--	2025-02-08 16:02
handle_connections_win.h	884 B	-rw-r--r--	2025-02-08 16:02
handler.h	196.46 KB	-rw-r--r--	2025-02-08 16:02
hash.h	4.34 KB	-rw-r--r--	2025-02-08 16:02
hash_filo.h	5.55 KB	-rw-r--r--	2025-02-08 16:02
heap.h	9.26 KB	-rw-r--r--	2025-02-08 16:02
hostname.h	5.29 KB	-rw-r--r--	2025-02-08 16:02
ilist.h	6.88 KB	-rw-r--r--	2025-02-08 16:02
init.h	852 B	-rw-r--r--	2025-02-08 16:02
innodb_priv.h	1.29 KB	-rw-r--r--	2025-02-08 16:02
item.h	271.94 KB	-rw-r--r--	2025-02-08 16:02
item_cmpfunc.h	131.86 KB	-rw-r--r--	2025-02-08 16:02
item_create.h	11.23 KB	-rw-r--r--	2025-02-08 16:02
item_func.h	133.04 KB	-rw-r--r--	2025-02-08 16:02
item_geofunc.h	37.99 KB	-rw-r--r--	2025-02-08 16:02
item_jsonfunc.h	21.99 KB	-rw-r--r--	2025-02-08 16:02
item_row.h	5.1 KB	-rw-r--r--	2025-02-08 16:02
item_strfunc.h	70.55 KB	-rw-r--r--	2025-02-08 16:02
item_subselect.h	57.71 KB	-rw-r--r--	2025-02-08 16:02
item_sum.h	70.59 KB	-rw-r--r--	2025-02-08 16:02
item_timefunc.h	63.1 KB	-rw-r--r--	2025-02-08 16:02
item_vers.h	4.23 KB	-rw-r--r--	2025-02-08 16:02
item_windowfunc.h	33.51 KB	-rw-r--r--	2025-02-08 16:02
item_xmlfunc.h	4.5 KB	-rw-r--r--	2025-02-08 16:02
json_table.h	9.28 KB	-rw-r--r--	2025-02-08 16:02
key.h	2.08 KB	-rw-r--r--	2025-02-08 16:02
keycaches.h	1.95 KB	-rw-r--r--	2025-02-08 16:02
lex.h	29.13 KB	-rw-r--r--	2025-02-08 16:02
lex_string.h	3.97 KB	-rw-r--r--	2025-02-08 16:02
lex_symbol.h	1.29 KB	-rw-r--r--	2025-02-08 16:02
lf.h	6.31 KB	-rw-r--r--	2025-02-08 16:02
lock.h	2.15 KB	-rw-r--r--	2025-02-08 16:02
log.h	45 KB	-rw-r--r--	2025-02-08 16:02
log_event.h	182.04 KB	-rw-r--r--	2025-02-08 16:02
log_event_data_type.h	1.85 KB	-rw-r--r--	2025-02-08 16:02
log_event_old.h	19.37 KB	-rw-r--r--	2025-02-08 16:02
log_slow.h	2.38 KB	-rw-r--r--	2025-02-08 16:02
maria.h	5.73 KB	-rw-r--r--	2025-02-08 16:02
mariadb.h	1.25 KB	-rw-r--r--	2025-02-08 16:02
mdl.h	37.57 KB	-rw-r--r--	2025-02-08 16:02
mem_root_array.h	6.94 KB	-rw-r--r--	2025-02-08 16:02
message.h	1.17 KB	-rw-r--r--	2025-02-08 16:02
multi_range_read.h	22.64 KB	-rw-r--r--	2025-02-08 16:02
my_alarm.h	2.37 KB	-rw-r--r--	2025-02-08 16:02
my_apc.h	4.64 KB	-rw-r--r--	2025-02-08 16:02
my_atomic.h	7.11 KB	-rw-r--r--	2025-02-08 16:02
my_atomic_wrapper.h	2.98 KB	-rw-r--r--	2025-02-08 16:02
my_base.h	26.57 KB	-rw-r--r--	2025-02-08 16:02
my_bit.h	6.05 KB	-rw-r--r--	2025-02-08 16:02
my_bitmap.h	5.74 KB	-rw-r--r--	2025-02-08 16:02
my_check_opt.h	2.56 KB	-rw-r--r--	2025-02-08 16:02
my_compare.h	10.93 KB	-rw-r--r--	2025-02-08 16:02
my_counter.h	1.68 KB	-rw-r--r--	2025-02-08 16:02
my_cpu.h	4.41 KB	-rw-r--r--	2025-02-08 16:02
my_crypt.h	904 B	-rw-r--r--	2025-02-08 16:02
my_decimal.h	14.15 KB	-rw-r--r--	2025-02-08 16:02
my_default.h	1.84 KB	-rw-r--r--	2025-02-08 16:02
my_handler_errors.h	4.77 KB	-rw-r--r--	2025-02-08 16:02
my_json_writer.h	17.95 KB	-rw-r--r--	2025-02-08 16:02
my_libwrap.h	1.16 KB	-rw-r--r--	2025-02-08 16:02
my_md5.h	1.45 KB	-rw-r--r--	2025-02-08 16:02
my_minidump.h	848 B	-rw-r--r--	2025-02-08 16:02
my_nosys.h	1.4 KB	-rw-r--r--	2025-02-08 16:02
my_rdtsc.h	8.23 KB	-rw-r--r--	2025-02-08 16:02
my_rnd.h	1.04 KB	-rw-r--r--	2025-02-08 16:02
my_service_manager.h	2 KB	-rw-r--r--	2025-02-08 16:02
my_stack_alloc.h	6.2 KB	-rw-r--r--	2025-02-08 16:02
my_stacktrace.h	3.14 KB	-rw-r--r--	2025-02-08 16:02
my_time.h	10.22 KB	-rw-r--r--	2025-02-08 16:02
my_tree.h	3.9 KB	-rw-r--r--	2025-02-08 16:02
my_uctype.h	67.9 KB	-rw-r--r--	2025-02-08 16:02
my_user.h	1.1 KB	-rw-r--r--	2025-02-08 16:02
myisam.h	17.1 KB	-rw-r--r--	2025-02-08 16:02
myisamchk.h	4.61 KB	-rw-r--r--	2025-02-08 16:02
myisammrg.h	4.78 KB	-rw-r--r--	2025-02-08 16:02
myisampack.h	14.58 KB	-rw-r--r--	2025-02-08 16:02
mysqld.h	39.51 KB	-rw-r--r--	2025-02-08 16:02
mysqld_default_groups.h	204 B	-rw-r--r--	2025-02-08 16:02
mysqld_suffix.h	1.17 KB	-rw-r--r--	2025-02-08 16:02
mysys_err.h	2.95 KB	-rw-r--r--	2025-02-08 16:02
opt_range.h	58.19 KB	-rw-r--r--	2025-02-08 16:02
opt_subselect.h	14.21 KB	-rw-r--r--	2025-02-08 16:02
opt_trace.h	8.29 KB	-rw-r--r--	2025-02-08 16:02
opt_trace_context.h	3.21 KB	-rw-r--r--	2025-02-08 16:02
parse_file.h	4.28 KB	-rw-r--r--	2025-02-08 16:02
partition_element.h	5.09 KB	-rw-r--r--	2025-02-08 16:02
partition_info.h	18.85 KB	-rw-r--r--	2025-02-08 16:02
password.h	1.14 KB	-rw-r--r--	2025-02-08 16:02
pfs_file_provider.h	3.08 KB	-rw-r--r--	2025-02-08 16:02
pfs_idle_provider.h	1.35 KB	-rw-r--r--	2025-02-08 16:02
pfs_memory_provider.h	1.59 KB	-rw-r--r--	2025-02-08 16:02
pfs_metadata_provider.h	1.85 KB	-rw-r--r--	2025-02-08 16:02
pfs_socket_provider.h	2.21 KB	-rw-r--r--	2025-02-08 16:02
pfs_stage_provider.h	1.52 KB	-rw-r--r--	2025-02-08 16:02
pfs_statement_provider.h	4.25 KB	-rw-r--r--	2025-02-08 16:02
pfs_table_provider.h	2.56 KB	-rw-r--r--	2025-02-08 16:02
pfs_thread_provider.h	5.43 KB	-rw-r--r--	2025-02-08 16:02
pfs_transaction_provider.h	2.78 KB	-rw-r--r--	2025-02-08 16:02
privilege.h	27.97 KB	-rw-r--r--	2025-02-08 16:02
probes_mysql.h	973 B	-rw-r--r--	2025-02-08 16:02
probes_mysql_dtrace.h	32.23 KB	-rw-r--r--	2025-02-08 16:02
probes_mysql_nodtrace.h	4.89 KB	-rw-r--r--	2025-02-08 16:02
procedure.h	6.63 KB	-rw-r--r--	2025-02-08 16:02
protocol.h	12.2 KB	-rw-r--r--	2025-02-08 16:02
proxy_protocol.h	548 B	-rw-r--r--	2025-02-08 16:02
queues.h	3.4 KB	-rw-r--r--	2025-02-08 16:02
records.h	3.07 KB	-rw-r--r--	2025-02-08 16:02
repl_failsafe.h	1.55 KB	-rw-r--r--	2025-02-08 16:02
replication.h	15.73 KB	-rw-r--r--	2025-02-08 16:02
rijndael.h	1.67 KB	-rw-r--r--	2025-02-08 16:02
rowid_filter.h	15.11 KB	-rw-r--r--	2025-02-08 16:02
rpl_constants.h	3.28 KB	-rw-r--r--	2025-02-08 16:02
rpl_filter.h	4.43 KB	-rw-r--r--	2025-02-08 16:02
rpl_gtid.h	13.36 KB	-rw-r--r--	2025-02-08 16:02
rpl_injector.h	9.43 KB	-rw-r--r--	2025-02-08 16:02
rpl_mi.h	14.64 KB	-rw-r--r--	2025-02-08 16:02
rpl_parallel.h	17.05 KB	-rw-r--r--	2025-02-08 16:02
rpl_record.h	1.55 KB	-rw-r--r--	2025-02-08 16:02
rpl_record_old.h	1.37 KB	-rw-r--r--	2025-02-08 16:02
rpl_reporting.h	3.63 KB	-rw-r--r--	2025-02-08 16:02
rpl_rli.h	31.98 KB	-rw-r--r--	2025-02-08 16:02
rpl_tblmap.h	3.1 KB	-rw-r--r--	2025-02-08 16:02
rpl_utility.h	9.4 KB	-rw-r--r--	2025-02-08 16:02
scheduler.h	3.12 KB	-rw-r--r--	2025-02-08 16:02
scope.h	4.29 KB	-rw-r--r--	2025-02-08 16:02
select_handler.h	2.18 KB	-rw-r--r--	2025-02-08 16:02
semisync.h	2.23 KB	-rw-r--r--	2025-02-08 16:02
semisync_master.h	24.96 KB	-rw-r--r--	2025-02-08 16:02
semisync_master_ack_receiver.h	8.5 KB	-rw-r--r--	2025-02-08 16:02
semisync_slave.h	3.65 KB	-rw-r--r--	2025-02-08 16:02
service_versions.h	2 KB	-rw-r--r--	2025-02-08 16:02
session_tracker.h	13.94 KB	-rw-r--r--	2025-02-08 16:02
set_var.h	16.16 KB	-rw-r--r--	2025-02-08 16:02
slave.h	11.99 KB	-rw-r--r--	2025-02-08 16:02
socketpair.h	842 B	-rw-r--r--	2025-02-08 16:02
source_revision.h	67 B	-rw-r--r--	2025-02-08 16:02
sp.h	22.06 KB	-rw-r--r--	2025-02-08 16:02
sp_cache.h	2 KB	-rw-r--r--	2025-02-08 16:02
sp_head.h	63 KB	-rw-r--r--	2025-02-08 16:02
sp_pcontext.h	24.31 KB	-rw-r--r--	2025-02-08 16:02
sp_rcontext.h	14 KB	-rw-r--r--	2025-02-08 16:02
span.h	3.84 KB	-rw-r--r--	2025-02-08 16:02
spatial.h	21.78 KB	-rw-r--r--	2025-02-08 16:02
sql_acl.h	13.8 KB	-rw-r--r--	2025-02-08 16:02
sql_admin.h	2.85 KB	-rw-r--r--	2025-02-08 16:02
sql_alloc.h	1.69 KB	-rw-r--r--	2025-02-08 16:02
sql_alter.h	14.92 KB	-rw-r--r--	2025-02-08 16:02
sql_analyse.h	10.86 KB	-rw-r--r--	2025-02-08 16:02
sql_analyze_stmt.h	12.38 KB	-rw-r--r--	2025-02-08 16:02
sql_array.h	6.71 KB	-rw-r--r--	2025-02-08 16:02
sql_audit.h	13.62 KB	-rw-r--r--	2025-02-08 16:02
sql_base.h	25.17 KB	-rw-r--r--	2025-02-08 16:02
sql_basic_types.h	9.3 KB	-rw-r--r--	2025-02-08 16:02
sql_binlog.h	895 B	-rw-r--r--	2025-02-08 16:02
sql_bitmap.h	7.66 KB	-rw-r--r--	2025-02-08 16:02
sql_bootstrap.h	1.77 KB	-rw-r--r--	2025-02-08 16:02
sql_cache.h	21.17 KB	-rw-r--r--	2025-02-08 16:02
sql_callback.h	1.51 KB	-rw-r--r--	2025-02-08 16:02
sql_class.h	261.08 KB	-rw-r--r--	2025-02-08 16:02
sql_cmd.h	9.13 KB	-rw-r--r--	2025-02-08 16:02
sql_connect.h	3.99 KB	-rw-r--r--	2025-02-08 16:02
sql_const.h	10.96 KB	-rw-r--r--	2025-02-08 16:02
sql_crypt.h	1.4 KB	-rw-r--r--	2025-02-08 16:02
sql_cte.h	16.15 KB	-rw-r--r--	2025-02-08 16:02
sql_cursor.h	2.26 KB	-rw-r--r--	2025-02-08 16:02
sql_db.h	2.38 KB	-rw-r--r--	2025-02-08 16:02
sql_debug.h	5.51 KB	-rw-r--r--	2025-02-08 16:02
sql_delete.h	1.31 KB	-rw-r--r--	2025-02-08 16:02
sql_derived.h	1.26 KB	-rw-r--r--	2025-02-08 16:02
sql_digest.h	3.73 KB	-rw-r--r--	2025-02-08 16:02
sql_digest_stream.h	1.53 KB	-rw-r--r--	2025-02-08 16:02
sql_do.h	954 B	-rw-r--r--	2025-02-08 16:02
sql_error.h	38.66 KB	-rw-r--r--	2025-02-08 16:02
sql_explain.h	28.34 KB	-rw-r--r--	2025-02-08 16:02
sql_expression_cache.h	4.26 KB	-rw-r--r--	2025-02-08 16:02
sql_get_diagnostics.h	7.68 KB	-rw-r--r--	2025-02-08 16:02
sql_handler.h	2.84 KB	-rw-r--r--	2025-02-08 16:02
sql_help.h	995 B	-rw-r--r--	2025-02-08 16:02
sql_hset.h	3.32 KB	-rw-r--r--	2025-02-08 16:02
sql_i_s.h	8.04 KB	-rw-r--r--	2025-02-08 16:02
sql_insert.h	2.56 KB	-rw-r--r--	2025-02-08 16:02
sql_join_cache.h	47.53 KB	-rw-r--r--	2025-02-08 16:02
sql_lex.h	168.36 KB	-rw-r--r--	2025-02-08 16:02
sql_lifo_buffer.h	9.45 KB	-rw-r--r--	2025-02-08 16:02
sql_limit.h	3.11 KB	-rw-r--r--	2025-02-08 16:02
sql_list.h	21.93 KB	-rw-r--r--	2025-02-08 16:02
sql_load.h	1.25 KB	-rw-r--r--	2025-02-08 16:02
sql_locale.h	2.64 KB	-rw-r--r--	2025-02-08 16:02
sql_manager.h	960 B	-rw-r--r--	2025-02-08 16:02
sql_mode.h	6.58 KB	-rw-r--r--	2025-02-08 16:02
sql_parse.h	8.43 KB	-rw-r--r--	2025-02-08 16:02
sql_partition.h	11.79 KB	-rw-r--r--	2025-02-08 16:02
sql_partition_admin.h	5.8 KB	-rw-r--r--	2025-02-08 16:02
sql_plist.h	7.55 KB	-rw-r--r--	2025-02-08 16:02
sql_plugin.h	7.37 KB	-rw-r--r--	2025-02-08 16:02
sql_plugin_compat.h	2.18 KB	-rw-r--r--	2025-02-08 16:02
sql_prepare.h	11.14 KB	-rw-r--r--	2025-02-08 16:02
sql_priv.h	18.16 KB	-rw-r--r--	2025-02-08 16:02
sql_profile.h	7.63 KB	-rw-r--r--	2025-02-08 16:02
sql_reload.h	1.01 KB	-rw-r--r--	2025-02-08 16:02
sql_rename.h	982 B	-rw-r--r--	2025-02-08 16:02
sql_repl.h	2.97 KB	-rw-r--r--	2025-02-08 16:02
sql_schema.h	3.23 KB	-rw-r--r--	2025-02-08 16:02
sql_select.h	86.81 KB	-rw-r--r--	2025-02-08 16:02
sql_sequence.h	5.06 KB	-rw-r--r--	2025-02-08 16:02
sql_servers.h	1.74 KB	-rw-r--r--	2025-02-08 16:02
sql_show.h	9.39 KB	-rw-r--r--	2025-02-08 16:02
sql_signal.h	3.28 KB	-rw-r--r--	2025-02-08 16:02
sql_sort.h	21.45 KB	-rw-r--r--	2025-02-08 16:02
sql_statistics.h	12.16 KB	-rw-r--r--	2025-02-08 16:02
sql_string.h	38.75 KB	-rw-r--r--	2025-02-08 16:02
sql_table.h	9.39 KB	-rw-r--r--	2025-02-08 16:02
sql_tablespace.h	956 B	-rw-r--r--	2025-02-08 16:02
sql_test.h	1.55 KB	-rw-r--r--	2025-02-08 16:02
sql_time.h	8.18 KB	-rw-r--r--	2025-02-08 16:02
sql_trigger.h	12.04 KB	-rw-r--r--	2025-02-08 16:02
sql_truncate.h	2.03 KB	-rw-r--r--	2025-02-08 16:02
sql_tvc.h	2.36 KB	-rw-r--r--	2025-02-08 16:02
sql_type.h	288.51 KB	-rw-r--r--	2025-02-08 16:02
sql_type_fixedbin.h	62.81 KB	-rw-r--r--	2025-02-08 16:02
sql_type_fixedbin_storage.h	5.34 KB	-rw-r--r--	2025-02-08 16:02
sql_type_geom.h	18.64 KB	-rw-r--r--	2025-02-08 16:02
sql_type_int.h	9.77 KB	-rw-r--r--	2025-02-08 16:02
sql_type_json.h	6.01 KB	-rw-r--r--	2025-02-08 16:02
sql_type_real.h	1.23 KB	-rw-r--r--	2025-02-08 16:02
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table.h	112.96 KB	-rw-r--r--	2025-02-08 16:02
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wsrep_types.h	997 B	-rw-r--r--	2025-02-08 16:02
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xa.h	1.8 KB	-rw-r--r--	2025-02-08 16:02

Rename

This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */

#ifndef SQL_ALTER_TABLE_H
#define SQL_ALTER_TABLE_H

class Alter_drop;
class Alter_column;
class Alter_rename_key;
class Alter_index_ignorability;
class Key;

/**
  Data describing the table being created by CREATE TABLE or
  altered by ALTER TABLE.
*/

class Alter_info
{
public:

enum enum_enable_or_disable { LEAVE_AS_IS, ENABLE, DISABLE };

bool vers_prohibited(THD *thd) const;

/**
     The different values of the ALGORITHM clause.
     Describes which algorithm to use when altering the table.
  */
  enum enum_alter_table_algorithm
  {
/*
  Use thd->variables.alter_algorithm for alter method. If this is also
  default then use the fastest possible ALTER TABLE method
  (INSTANT, NOCOPY, INPLACE, COPY)
*/
    ALTER_TABLE_ALGORITHM_DEFAULT,

// Copy if supported, error otherwise.
    ALTER_TABLE_ALGORITHM_COPY,

// In-place if supported, error otherwise.
    ALTER_TABLE_ALGORITHM_INPLACE,

// No Copy will refuse any operation which does rebuild.
    ALTER_TABLE_ALGORITHM_NOCOPY,

// Instant should allow any operation that changes metadata only.
    ALTER_TABLE_ALGORITHM_INSTANT,

// When there is no specification of algorithm during alter table.
    ALTER_TABLE_ALGORITHM_NONE
  };

/**
     The different values of the LOCK clause.
     Describes the level of concurrency during ALTER TABLE.
  */
  enum enum_alter_table_lock
  {
    // Maximum supported level of concurency for the given operation.
    ALTER_TABLE_LOCK_DEFAULT,

// Allow concurrent reads & writes. If not supported, give error.
    ALTER_TABLE_LOCK_NONE,

// Allow concurrent reads only. If not supported, give error.
    ALTER_TABLE_LOCK_SHARED,

// Block reads and writes.
    ALTER_TABLE_LOCK_EXCLUSIVE
  };

Lex_table_name db, table_name;

// Columns and keys to be dropped.
  List<Alter_drop>              drop_list;
  // Columns for ALTER_CHANGE_COLUMN_DEFAULT.
  List<Alter_column>            alter_list;
  // List of keys, used by both CREATE and ALTER TABLE.
  List<Key>                     key_list;
  // List of keys to be renamed.
  List<Alter_rename_key>        alter_rename_key_list;
  // List of columns, used by both CREATE and ALTER TABLE.
  List<Create_field>            create_list;
  // Indexes whose ignorability needs to be changed.
  List<Alter_index_ignorability>  alter_index_ignorability_list;
  List<Virtual_column_info>     check_constraint_list;
  // Type of ALTER TABLE operation.
  alter_table_operations        flags;
  ulong                         partition_flags;
  // Enable or disable keys.
  enum_enable_or_disable        keys_onoff;
  // Used only in add_stat_drop_index()
  TABLE                         *original_table;
  // List of partitions.
  List<const char>              partition_names;
  // Number of partitions.
  uint                          num_parts;

/* List of fields that we should delete statistics from */
  List<Field> drop_stat_fields;

struct DROP_INDEX_STAT_PARAMS
  {
    KEY *key;
    bool ext_prefixes_only;
  };

struct RENAME_COLUMN_STAT_PARAMS
  {
    Field *field;
    LEX_CSTRING *name;
    uint duplicate_counter;                       // For temporary names
  };
  struct RENAME_INDEX_STAT_PARAMS
  {
    const KEY *key;
    const LEX_CSTRING *name;
    uint duplicate_counter;                       // For temporary names
    uint usage_count;                             // How many rename entries
  };

/* List of index that we should delete statistics from */
  List<DROP_INDEX_STAT_PARAMS> drop_stat_indexes;

List<RENAME_COLUMN_STAT_PARAMS> rename_stat_fields;

List<RENAME_INDEX_STAT_PARAMS> rename_stat_indexes;

bool add_stat_drop_index(KEY *key, bool ext_prefixes_only,
                           MEM_ROOT *mem_root)
  {
    DROP_INDEX_STAT_PARAMS *param;
    if (!(param= (DROP_INDEX_STAT_PARAMS*)
          alloc_root(mem_root, sizeof(*param))))
      return true;
    param->key=  key;
    param->ext_prefixes_only= ext_prefixes_only;
    return drop_stat_indexes.push_back(param, mem_root);
  }

bool add_stat_drop_index(THD *thd, const LEX_CSTRING *key_name);

bool add_stat_rename_index(const KEY *key, const LEX_CSTRING *name,
                             MEM_ROOT *mem_root)
  {
    RENAME_INDEX_STAT_PARAMS *param;
    if (!(param= (RENAME_INDEX_STAT_PARAMS*)
          alloc_root(mem_root, sizeof(*param))))
      return true;
    param->key=  key;
    param->name= name;
    param->usage_count= 0;
    return rename_stat_indexes.push_back(param, mem_root);
  }

bool add_stat_rename_field(Field *field, LEX_CSTRING *name,
                             MEM_ROOT *mem_root)
  {
    RENAME_COLUMN_STAT_PARAMS *param;
    if (!(param= (RENAME_COLUMN_STAT_PARAMS*)
          alloc_root(mem_root, sizeof(*param))))
      return true;
    param->field= field;
    param->name=  name;
    param->duplicate_counter= 0;
    return rename_stat_fields.push_back(param, mem_root);
  }

bool collect_renamed_fields(THD *thd);

/* Delete/update statistics in EITS tables */
  void apply_statistics_deletes_renames(THD *thd, TABLE *table);

private:
  // Type of ALTER TABLE algorithm.
  enum_alter_table_algorithm    requested_algorithm;

public:
  // Type of ALTER TABLE lock.
  enum_alter_table_lock         requested_lock;

Alter_info() :
  flags(0), partition_flags(0),
    keys_onoff(LEAVE_AS_IS),
    original_table(0),
    num_parts(0),
    requested_algorithm(ALTER_TABLE_ALGORITHM_NONE),
    requested_lock(ALTER_TABLE_LOCK_DEFAULT)
  {}

void reset()
  {
    drop_list.empty();
    alter_list.empty();
    key_list.empty();
    alter_rename_key_list.empty();
    create_list.empty();
    alter_index_ignorability_list.empty();
    check_constraint_list.empty();
    drop_stat_fields.empty();
    drop_stat_indexes.empty();
    rename_stat_fields.empty();
    rename_stat_indexes.empty();
    flags= 0;
    partition_flags= 0;
    keys_onoff= LEAVE_AS_IS;
    num_parts= 0;
    partition_names.empty();
    requested_algorithm= ALTER_TABLE_ALGORITHM_NONE;
    requested_lock= ALTER_TABLE_LOCK_DEFAULT;
  }

/**
    Construct a copy of this object to be used for mysql_alter_table
    and mysql_create_table.

Historically, these two functions modify their Alter_info
    arguments. This behaviour breaks re-execution of prepared
    statements and stored procedures and is compensated by always
    supplying a copy of Alter_info to these functions.

@param  rhs       Alter_info to make copy of
    @param  mem_root  Mem_root for new Alter_info

@note You need to use check the error in THD for out
    of memory condition after calling this function.
  */
  Alter_info(const Alter_info &rhs, MEM_ROOT *mem_root);

/**
     Parses the given string and sets requested_algorithm
     if the string value matches a supported value.
     Supported values: INPLACE, COPY, DEFAULT

@param  str    String containing the supplied value
     @retval false  Supported value found, state updated
     @retval true   Not supported value, no changes made
  */
  bool set_requested_algorithm(const LEX_CSTRING *str);

/**
     Parses the given string and sets requested_lock
     if the string value matches a supported value.
     Supported values: NONE, SHARED, EXCLUSIVE, DEFAULT

@param  str    String containing the supplied value
     @retval false  Supported value found, state updated
     @retval true   Not supported value, no changes made
  */

bool set_requested_lock(const LEX_CSTRING *str);

/**
    Set the requested algorithm to the given algorithm value
    @param algo_value	algorithm to be set
   */
  void set_requested_algorithm(enum_alter_table_algorithm algo_value);

/**
     Returns the algorithm value in the format "algorithm=value"
  */
  const char* algorithm_clause(THD *thd) const;

/**
     Returns the lock value in the format "lock=value"
  */
  const char* lock() const;

/**
     Check whether the given result can be supported
     with the specified user alter algorithm.

@param  thd            Thread handle
     @param  ha_alter_info  Structure describing changes to be done
                            by ALTER TABLE and holding data during
                            in-place alter
     @retval false  Supported operation
     @retval true   Not supported value
  */
  bool supports_algorithm(THD *thd,
                          const Alter_inplace_info *ha_alter_info);

/**
     Check whether the given result can be supported
     with the specified user lock type.

@param  ha_alter_info  Structure describing changes to be done
                            by ALTER TABLE and holding data during
                            in-place alter
     @retval false  Supported lock type
     @retval true   Not supported value
  */
  bool supports_lock(THD *thd, const Alter_inplace_info *ha_alter_info);

/**
    Return user requested algorithm. If user does not specify
    algorithm then return alter_algorithm variable value.
   */
  enum_alter_table_algorithm algorithm(const THD *thd) const;

uint check_vcol_field(Item_field *f) const;

private:
  Alter_info &operator=(const Alter_info &rhs); // not implemented
  Alter_info(const Alter_info &rhs);            // not implemented
};

/** Runtime context for ALTER TABLE. */
class Alter_table_ctx
{
public:
  Alter_table_ctx();

Alter_table_ctx(THD *thd, TABLE_LIST *table_list, uint tables_opened_arg,
                  const LEX_CSTRING *new_db_arg, const LEX_CSTRING *new_name_arg);

/**
     @return true if the table is moved to another database, false otherwise.
  */
  bool is_database_changed() const
  { return (new_db.str != db.str); };

/**
     @return true if the table is renamed, false otherwise.
  */
  bool is_table_renamed() const
  { return (is_database_changed() || new_name.str != table_name.str); };

/**
     @return filename (including .frm) for the new table.
  */
  const char *get_new_filename() const
  {
    DBUG_ASSERT(!tmp_table);
    return new_filename;
  }

/**
     @return path to the original table.
  */
  const char *get_path() const
  {
    DBUG_ASSERT(!tmp_table);
    return path;
  }

/**
     @return path to the new table.
  */
  const char *get_new_path() const
  {
    DBUG_ASSERT(!tmp_table);
    return new_path;
  }

/**
     @return path to the temporary table created during ALTER TABLE.
  */
  const char *get_tmp_path() const
  { return tmp_path; }

const LEX_CSTRING get_tmp_cstring_path() const
  {
    LEX_CSTRING tmp= { tmp_path, strlen(tmp_path) };
    return tmp;
  };

/**
    Mark ALTER TABLE as needing to produce foreign key error if
    it deletes a row from the table being changed.
  */
  void set_fk_error_if_delete_row(FOREIGN_KEY_INFO *fk)
  {
    fk_error_if_delete_row= true;
    fk_error_id= fk->foreign_id->str;
    fk_error_table= fk->foreign_table->str;
  }

void report_implicit_default_value_error(THD *thd, const TABLE_SHARE *) const;
public:
  Create_field *implicit_default_value_error_field= nullptr;
  bool         error_if_not_empty= false;
  uint         tables_opened= 0;
  LEX_CSTRING  db;
  LEX_CSTRING  table_name;
  LEX_CSTRING  storage_engine_name;
  LEX_CSTRING  alias;
  LEX_CSTRING  new_db;
  LEX_CSTRING  new_name;
  LEX_CSTRING  new_alias;
  LEX_CSTRING  tmp_name;
  LEX_CSTRING  tmp_storage_engine_name;
  LEX_CUSTRING tmp_id, id;
  char         tmp_buff[80];
  uchar        id_buff[MY_UUID_SIZE];
  char         storage_engine_buff[NAME_LEN], tmp_storage_engine_buff[NAME_LEN];
  bool         storage_engine_partitioned;
  bool         tmp_storage_engine_name_partitioned;

/**
    Indicates that if a row is deleted during copying of data from old version
    of table to the new version ER_FK_CANNOT_DELETE_PARENT error should be
    emitted.
  */
  bool fk_error_if_delete_row= false;
  /** Name of foreign key for the above error. */
  const char *fk_error_id= nullptr;
  /** Name of table for the above error. */
  const char *fk_error_table= nullptr;
  bool modified_primary_key= false;
  bool fast_alter_partition= false;
  /** Indicates that we are altering temporary table */
  bool tmp_table= false;

private:
  char new_filename[FN_REFLEN + 1];
  char new_alias_buff[NAME_LEN + 1];
  char tmp_name_buff[NAME_LEN + 1];
  char path[FN_REFLEN + 1];
  char new_path[FN_REFLEN + 1];
  char tmp_path[FN_REFLEN + 1];

Alter_table_ctx &operator=(const Alter_table_ctx &rhs); // not implemented
  Alter_table_ctx(const Alter_table_ctx &rhs);            // not implemented
};

/**
  Sql_cmd_common_alter_table represents the common properties of the ALTER TABLE
  statements.
  @todo move Alter_info and other ALTER generic structures from Lex here.
*/
class Sql_cmd_common_alter_table : public Sql_cmd
{
protected:
  /**
    Constructor.
  */
  Sql_cmd_common_alter_table() = default;

virtual ~Sql_cmd_common_alter_table() = default;

enum_sql_command sql_command_code() const override
  {
    return SQLCOM_ALTER_TABLE;
  }
};

/**
  Sql_cmd_alter_table represents the generic ALTER TABLE statement.
  @todo move Alter_info and other ALTER specific structures from Lex here.
*/
class Sql_cmd_alter_table : public Sql_cmd_common_alter_table,
                            public Storage_engine_name
{
public:
  /**
    Constructor, used to represent a ALTER TABLE statement.
  */
  Sql_cmd_alter_table() = default;

~Sql_cmd_alter_table() = default;

Storage_engine_name *option_storage_engine_name() override { return this; }

bool execute(THD *thd) override;
};

/**
  Sql_cmd_alter_sequence represents the ALTER SEQUENCE statement.
*/
class Sql_cmd_alter_sequence : public Sql_cmd,
                               public DDL_options
{
public:
  /**
    Constructor, used to represent a ALTER TABLE statement.
  */
  Sql_cmd_alter_sequence(const DDL_options &options)
   :DDL_options(options)
  {}

~Sql_cmd_alter_sequence() = default;

enum_sql_command sql_command_code() const override
  {
    return SQLCOM_ALTER_SEQUENCE;
  }
  bool execute(THD *thd) override;
};

/**
  Sql_cmd_alter_table_tablespace represents ALTER TABLE
  IMPORT/DISCARD TABLESPACE statements.
*/
class Sql_cmd_discard_import_tablespace : public Sql_cmd_common_alter_table
{
public:
  enum enum_tablespace_op_type
  {
    DISCARD_TABLESPACE, IMPORT_TABLESPACE
  };

Sql_cmd_discard_import_tablespace(enum_tablespace_op_type tablespace_op_arg)
    : m_tablespace_op(tablespace_op_arg)
  {}

bool execute(THD *thd) override;

private:
  const enum_tablespace_op_type m_tablespace_op;
};

#endif