84
86
show variables like 'max_join_size';
85
87
Variable_name Value
87
select * from information_schema.session_variables where variable_name like 'max_join_size';
89
select * from data_dictionary.session_variables where variable_name like 'max_join_size';
88
90
VARIABLE_NAME VARIABLE_VALUE
90
92
show global variables like 'max_join_size';
91
93
Variable_name Value
93
select * from information_schema.global_variables where variable_name like 'max_join_size';
95
select * from data_dictionary.global_variables where variable_name like 'max_join_size';
94
96
VARIABLE_NAME VARIABLE_VALUE
96
98
set GLOBAL max_join_size=2000;
97
99
show global variables like 'max_join_size';
98
100
Variable_name Value
99
101
max_join_size 2000
100
select * from information_schema.global_variables where variable_name like 'max_join_size';
102
select * from data_dictionary.global_variables where variable_name like 'max_join_size';
101
103
VARIABLE_NAME VARIABLE_VALUE
102
104
max_join_size 2000
103
105
set max_join_size=DEFAULT;
104
106
show variables like 'max_join_size';
105
107
Variable_name Value
106
108
max_join_size 2000
107
select * from information_schema.session_variables where variable_name like 'max_join_size';
109
select * from data_dictionary.session_variables where variable_name like 'max_join_size';
108
110
VARIABLE_NAME VARIABLE_VALUE
109
111
max_join_size 2000
110
112
set GLOBAL max_join_size=DEFAULT;
111
113
show global variables like 'max_join_size';
112
114
Variable_name Value
113
115
max_join_size 2147483647
114
select * from information_schema.global_variables where variable_name like 'max_join_size';
116
select * from data_dictionary.global_variables where variable_name like 'max_join_size';
115
117
VARIABLE_NAME VARIABLE_VALUE
116
118
max_join_size 2147483647
117
119
set @@max_join_size=1000, @@global.max_join_size=2000;
144
146
show variables like 'timed_mutexes';
145
147
Variable_name Value
147
select * from information_schema.session_variables where variable_name like 'timed_mutexes';
149
select * from data_dictionary.session_variables where variable_name like 'timed_mutexes';
148
150
VARIABLE_NAME VARIABLE_VALUE
150
152
set global timed_mutexes=0;
151
153
show variables like 'timed_mutexes';
152
154
Variable_name Value
153
155
timed_mutexes OFF
154
select * from information_schema.session_variables where variable_name like 'timed_mutexes';
156
select * from data_dictionary.session_variables where variable_name like 'timed_mutexes';
155
157
VARIABLE_NAME VARIABLE_VALUE
156
158
timed_mutexes OFF
157
159
set storage_engine=MYISAM, storage_engine="MEMORY";
158
160
show local variables like 'storage_engine';
159
161
Variable_name Value
160
162
storage_engine MEMORY
161
select * from information_schema.session_variables where variable_name like 'storage_engine';
163
select * from data_dictionary.session_variables where variable_name like 'storage_engine';
162
164
VARIABLE_NAME VARIABLE_VALUE
163
165
storage_engine MEMORY
164
166
show global variables like 'storage_engine';
165
167
Variable_name Value
166
168
storage_engine InnoDB
167
select * from information_schema.global_variables where variable_name like 'storage_engine';
169
select * from data_dictionary.global_variables where variable_name like 'storage_engine';
168
170
VARIABLE_NAME VARIABLE_VALUE
169
171
storage_engine InnoDB
170
172
set GLOBAL myisam_max_sort_file_size=2000000;
171
173
show global variables like 'myisam_max_sort_file_size';
172
174
Variable_name Value
173
175
myisam_max_sort_file_size 2000000
174
select * from information_schema.global_variables where variable_name like 'myisam_max_sort_file_size';
176
select * from data_dictionary.global_variables where variable_name like 'myisam_max_sort_file_size';
175
177
VARIABLE_NAME VARIABLE_VALUE
176
178
myisam_max_sort_file_size 2000000
177
179
set GLOBAL myisam_max_sort_file_size=default;
178
180
show global variables like 'myisam_max_sort_file_size';
179
181
Variable_name Value
180
182
myisam_max_sort_file_size 2147483647
181
select * from information_schema.global_variables where variable_name like 'myisam_max_sort_file_size';
183
select * from data_dictionary.global_variables where variable_name like 'myisam_max_sort_file_size';
182
184
VARIABLE_NAME VARIABLE_VALUE
183
185
myisam_max_sort_file_size 2147483647
184
186
set global drizzle_protocol_buffer_length=1024;
185
187
show global variables like 'drizzle_protocol_buffer_%';
186
188
Variable_name Value
187
189
drizzle_protocol_buffer_length 1024
188
select * from information_schema.global_variables where variable_name like 'drizzle_protocol_buffer_%';
190
select * from data_dictionary.global_variables where variable_name like 'drizzle_protocol_buffer_%';
189
191
VARIABLE_NAME VARIABLE_VALUE
190
192
drizzle_protocol_buffer_length 1024
191
193
show global variables like 'drizzle_protocol_buffer_%';
192
194
Variable_name Value
193
195
drizzle_protocol_buffer_length 1024
194
select * from information_schema.global_variables where variable_name like 'drizzle_protocol_buffer_%';
196
select * from data_dictionary.global_variables where variable_name like 'drizzle_protocol_buffer_%';
195
197
VARIABLE_NAME VARIABLE_VALUE
196
198
drizzle_protocol_buffer_length 1024
197
199
set global drizzle_protocol_buffer_length=1;
211
213
innodb_use_sys_malloc ON
212
214
query_alloc_block_size 8192
213
215
query_prealloc_size 8192
214
range_alloc_block_size
215
select * from information_schema.session_variables where variable_name like '%alloc%';
216
range_alloc_block_size 8192
217
select * from data_dictionary.session_variables where variable_name like '%alloc%';
216
218
VARIABLE_NAME VARIABLE_VALUE
217
219
innodb_use_sys_malloc ON
218
220
query_alloc_block_size 8192
219
221
query_prealloc_size 8192
220
range_alloc_block_size
222
range_alloc_block_size 8192
221
223
set @@range_alloc_block_size=1024*16;
222
224
set @@query_alloc_block_size=1024*17+2;
223
225
set @@query_prealloc_size=1024*18;
229
231
innodb_use_sys_malloc ON
230
232
query_alloc_block_size 17408
231
233
query_prealloc_size 18432
232
range_alloc_block_size
233
select * from information_schema.session_variables where variable_name like '%alloc%';
234
range_alloc_block_size 18432
235
select * from data_dictionary.session_variables where variable_name like '%alloc%';
234
236
VARIABLE_NAME VARIABLE_VALUE
235
237
innodb_use_sys_malloc ON
236
238
query_alloc_block_size 17408
237
239
query_prealloc_size 18432
238
range_alloc_block_size
240
range_alloc_block_size 18432
239
241
set @@range_alloc_block_size=default;
240
242
set @@query_alloc_block_size=default, @@query_prealloc_size=default;
241
243
show variables like '%alloc%';
243
245
innodb_use_sys_malloc ON
244
246
query_alloc_block_size 8192
245
247
query_prealloc_size 8192
246
range_alloc_block_size
247
select * from information_schema.session_variables where variable_name like '%alloc%';
248
range_alloc_block_size 8192
249
select * from data_dictionary.session_variables where variable_name like '%alloc%';
248
250
VARIABLE_NAME VARIABLE_VALUE
249
251
innodb_use_sys_malloc ON
250
252
query_alloc_block_size 8192
251
253
query_prealloc_size 8192
252
range_alloc_block_size
254
range_alloc_block_size 8192
253
255
SELECT @@version LIKE 'non-existent';
254
256
@@version LIKE 'non-existent'
352
354
show global variables like 'myisam_max_sort_file_size';
353
355
Variable_name Value
354
356
myisam_max_sort_file_size MAX_FILE_SIZE
355
select * from information_schema.global_variables where variable_name like 'myisam_max_sort_file_size';
357
select * from data_dictionary.global_variables where variable_name like 'myisam_max_sort_file_size';
356
358
VARIABLE_NAME VARIABLE_VALUE
357
359
myisam_max_sort_file_size MAX_FILE_SIZE
358
360
set global myisam_max_sort_file_size=default;
519
521
ERROR HY000: Unknown system variable 'character_set_filesystem'
520
522
set character_set_filesystem=utf8;
521
523
ERROR HY000: Unknown system variable 'character_set_filesystem'
522
set @old_sql_big_selects = @@sql_big_selects;
524
set @sql_big_selects = @@sql_big_selects;
523
525
set @@sql_big_selects = 1;
524
526
show variables like 'sql_big_selects';
525
527
Variable_name Value
526
528
sql_big_selects ON
527
set @@sql_big_selects = @old_sql_big_selects;
529
set @@sql_big_selects = @sql_big_selects;
528
530
set @@sql_notes = 0, @@sql_warnings = 0;
529
531
show variables like 'sql_notes';
530
532
Variable_name Value