使用LIKE在MySQL中显示不同的变量？
以下是语法-
show variables where Variable_name like 'yourVariable1%' or Variable_name like 'yourVariable2%',.............N;
让我们实现以上语法以显示（多个）变量-
mysql> show variables where Variable_name like 'key%' or Variable_name like 'innodb_undo%' or Variable_name like 'innodb_log%';
输出结果
+------------------------------------+----------+ | Variable_name | Value | +------------------------------------+----------+ | innodb_log_buffer_size | 1048576 | | innodb_log_checksums | ON | | innodb_log_compressed_pages | ON | | innodb_log_file_size | 50331648 | | innodb_log_files_in_group | 2 | | innodb_log_group_home_dir | .\ | | innodb_log_spin_cpu_abs_lwm | 80 | | innodb_log_spin_cpu_pct_hwm | 50 | | innodb_log_wait_for_flush_spin_hwm | 400 | | innodb_log_write_ahead_size | 8192 | | innodb_undo_directory | .\ | | innodb_undo_log_encrypt | OFF | | innodb_undo_log_truncate | ON | | innodb_undo_tablespaces | 2 | | key_buffer_size | 8388608 | | key_cache_age_threshold | 300 | | key_cache_block_size | 1024 | | key_cache_division_limit | 100 | | keyring_operations | ON | +------------------------------------+----------+ 19 rows in set (0.01 sec)