将文件拖动至此

SQL 上传 ( 0 ) x -

页面相关设置 点击以滚动到页面顶部
按 Ctrl+Enter 键执行查询 按 Enter 执行查询
递增排序
递减排序
命令:
调试 SQL
数量
运行顺序
用时
排序条件:
联合查询
不使用联合查询
崩溃 扩展 显示跟踪 隐藏跟踪 数量 : 用时 :
书签
刷新
添加
没有书签
添加书签
选项
恢复默认





崩溃 扩展 重新查询 编辑 解析 性能分析 书签 查询失败 数据库 : 查询时间 :
浏览模式
自定义浏览模式。
浏览模式
文档 仅使用图标、文字或都使用。 还原为默认值
文档 仅使用图标、文字或都使用。 还原为默认值
文档 设置是否给用户显示一个 "显示所有 (记录)" 的按钮。 还原为默认值
文档 浏览结果集时显示的行数。若结果集总行数超过该值,将会显示 "上一页" 和 "下一页" 的链接。 还原为默认值
文档 SMART - 即对 TIME、DATE、DATETIME 和 TIMESTAMP 类型的字段递减排序,其它字段递增。 还原为默认值
文档 高亮鼠标指针所在的行。 还原为默认值
文档 高亮选中的行。 还原为默认值
文档 还原为默认值
文档 还原为默认值
文档 每 X 单元格重复表头,要禁止此功能请设为 0 还原为默认值
文档 浏览非数字字段时最多显示的字数。 还原为默认值
文档 这些是编辑、复制和删除链接。 还原为默认值
文档 缺少唯一键时是否显示行链接。 还原为默认值
文档 默认用主键为表排序。 还原为默认值
文档 当浏览表时使用上次的排序方式。 还原为默认值
文档 显示选项 还原为默认值
SELECT * FROM `SYSTEM_VARIABLES` ORDER BY `READ_ONLY` DESC 
编辑内嵌 ] [ 编辑 ] [ 解析 SQL ] [ 创建 PHP 代码 ] [ 刷新 ]
VARIABLE_NAME SESSION_VALUE GLOBAL_VALUE GLOBAL_VALUE_ORIGIN DEFAULT_VALUE VARIABLE_SCOPE VARIABLE_TYPE VARIABLE_COMMENT NUMERIC_MIN_VALUE NUMERIC_MAX_VALUE NUMERIC_BLOCK_SIZE ENUM_VALUE_LIST READ_ONLY 递减 递增 1 COMMAND_LINE_ARGUMENT
INNODB_LOCKS_UNSAFE_FOR_BINLOG NULL OFF COMPILE-TIME OFF GLOBAL BOOLEAN DEPRECATED. This option may be removed in future r... NULL NULL NULL OFF,ON YES NONE
PERFORMANCE_SCHEMA NULL OFF COMPILE-TIME OFF GLOBAL BOOLEAN Enable the performance schema. NULL NULL NULL OFF,ON YES OPTIONAL
PERFORMANCE_SCHEMA_EVENTS_WAITS_HISTORY_LONG_SIZE NULL -1 COMPILE-TIME -1 GLOBAL INT Number of rows in EVENTS_WAITS_HISTORY_LONG. Use 0... -1 1048576 1 NULL YES REQUIRED
PERFORMANCE_SCHEMA_MAX_COND_CLASSES NULL 90 COMPILE-TIME 90 GLOBAL INT UNSIGNED Maximum number of condition instruments. 0 256 1 NULL YES REQUIRED
PERFORMANCE_SCHEMA_MAX_COND_INSTANCES NULL -1 COMPILE-TIME -1 GLOBAL INT Maximum number of instrumented condition objects. ... -1 1048576 1 NULL YES REQUIRED
INNODB_BUFFER_POOL_LOAD_AT_STARTUP NULL ON COMPILE-TIME ON GLOBAL BOOLEAN Load the buffer pool from a file named @@innodb_bu... NULL NULL NULL OFF,ON YES REQUIRED
PERFORMANCE_SCHEMA_MAX_RWLOCK_CLASSES NULL 40 COMPILE-TIME 40 GLOBAL INT UNSIGNED Maximum number of rwlock instruments. 0 256 1 NULL YES REQUIRED
INNODB_ENCRYPT_TEMPORARY_TABLES NULL OFF COMPILE-TIME OFF GLOBAL BOOLEAN Enrypt the temporary table data. NULL NULL NULL OFF,ON YES OPTIONAL
PERFORMANCE_SCHEMA_MAX_MUTEX_INSTANCES NULL -1 COMPILE-TIME -1 GLOBAL INT Maximum number of instrumented MUTEX objects. Use ... -1 104857600 1 NULL YES REQUIRED
EXTERNAL_USER NULL COMPILE-TIME NULL SESSION ONLY VARCHAR The external user account used when logging in NULL NULL NULL NULL YES NULL
PERFORMANCE_SCHEMA_MAX_RWLOCK_INSTANCES NULL -1 COMPILE-TIME -1 GLOBAL INT Maximum number of instrumented RWLOCK objects. Use... -1 104857600 1 NULL YES REQUIRED
PROTOCOL_VERSION NULL 10 COMPILE-TIME NULL GLOBAL INT UNSIGNED The version of the client/server protocol used by ... 0 4294967295 1 NULL YES NULL
PERFORMANCE_SCHEMA_MAX_MUTEX_CLASSES NULL 200 COMPILE-TIME 200 GLOBAL INT UNSIGNED Maximum number of mutex instruments. 0 256 1 NULL YES REQUIRED
PERFORMANCE_SCHEMA_ACCOUNTS_SIZE NULL -1 COMPILE-TIME -1 GLOBAL INT Maximum number of instrumented user@host accounts.... -1 1048576 1 NULL YES REQUIRED
INNODB_ADAPTIVE_HASH_INDEX_PARTS NULL 8 COMPILE-TIME 8 GLOBAL INT UNSIGNED Number of InnoDB Adaptive Hash Index Partitions (d... 1 512 0 NULL YES OPTIONAL
PERFORMANCE_SCHEMA_EVENTS_WAITS_HISTORY_SIZE NULL -1 COMPILE-TIME -1 GLOBAL INT Number of rows per thread in EVENTS_WAITS_HISTORY.... -1 1024 1 NULL YES REQUIRED
HAVE_PROFILING NULL YES COMPILE-TIME NULL GLOBAL VARCHAR If statement profiling is available, will be set t... NULL NULL NULL NULL YES NULL
PERFORMANCE_SCHEMA_EVENTS_STAGES_HISTORY_SIZE NULL -1 COMPILE-TIME -1 GLOBAL INT Number of rows per thread in EVENTS_STAGES_HISTORY... -1 1024 1 NULL YES REQUIRED
ARIA_FORCE_START_AFTER_RECOVERY_FAILURES NULL 0 COMPILE-TIME 0 GLOBAL INT UNSIGNED Number of consecutive log recovery failures after ... 0 255 1 NULL YES REQUIRED
INNODB_LARGE_PREFIX NULL COMPILE-TIME GLOBAL VARCHAR Deprecated parameter with no effect. NULL NULL NULL NULL YES REQUIRED
PERFORMANCE_SCHEMA_MAX_THREAD_INSTANCES NULL -1 COMPILE-TIME -1 GLOBAL INT Maximum number of instrumented threads. Use 0 to d... -1 1048576 1 NULL YES REQUIRED
REPORT_HOST NULL COMPILE-TIME GLOBAL VARCHAR Hostname or IP of the slave to be reported to the ... NULL NULL NULL NULL YES REQUIRED
INNODB_SORT_BUFFER_SIZE NULL 1048576 COMPILE-TIME 1048576 GLOBAL INT UNSIGNED Memory buffer size for index creation 65536 67108864 0 NULL YES REQUIRED
PERFORMANCE_SCHEMA_SETUP_OBJECTS_SIZE NULL 100 COMPILE-TIME 100 GLOBAL INT UNSIGNED Maximum number of rows in SETUP_OBJECTS. 0 1048576 1 NULL YES REQUIRED
LARGE_FILES_SUPPORT NULL ON COMPILE-TIME NULL GLOBAL BOOLEAN Whether mysqld was compiled with options for large... NULL NULL NULL OFF,ON YES NULL
查询结果操作 复制到剪贴板 复制到剪贴板 导出 导出 显示图表 显示图表 新建视图 新建视图
将此 SQL 查询加为书签 将此 SQL 查询加为书签