SET NAMES utf8mb4; SET FOREIGN_KEY_CHECKS = 0; -- --- -- Table structure for user -- --- DROP TABLE IF EXISTS `user`; CREATE TABLE `user` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL, `password` ...
SET NAMES utf8mb4; SET FOREIGN_KEY_CHECKS = 0; -- --- -- Table structure for dept -- --- DROP TABLE IF EXISTS `dept`; CREATE TABLE `dept` ( `deptno` int(2) NOT NULL, `dname` varchar(14) CHARACTER SET latin1 COLLATE latin1_swedish_ci NULL DEFAULT NULL, `loc` varchar(13)...
In MySQL 8.0, it is possible to exchange a table partition or subpartition with a table usingALTER TABLEptEXCHANGE PARTITIONpWITH TABLEnt, whereptis the partitioned table andpis the partition or subpartition ofptto be exchanged with unpartitioned tablent, provided that the following statements ar...
whereptis the partitioned table andpis the partition or subpartition ofptto be exchanged with unpartitioned tablent, provided that the following statements are true:
CREATE TABLE 时有多种数据库存储引擎: TYPE = {BDB | HEAP | ISAM | InnoDB | MERGE | MRG_MYISAM | MYISAM } 两种常用引擎MyISAM、InnoDB 大至区别如下: 1)高级处理: MyISAM类型不支持事务处理等高级处理,而InnoDB类型支持。 2)执行速度:
typedef struct mem_block_info_t mem_block_t;typedef mem_block_t mem_heap_t;.../** The info structure stored at the beginning of a heap block */struct mem_block_info_t {...UT_LIST_BASE_NODE_T(mem_block_t) base; /* 链表基节点,只在第一个block定义 */UT_LIST_NODE_T(mem_block...
MySQL错误日志出现[Note]InnoDB: Discarding tablespaceoftabledb.table: Data structure corruption产生可能的原因及解决办法? 一、产生原因 从错误日志即可判断出表空间ibd文件发生了物理损坏,那么其中的可能包括如下:1、数据库服务器异常down机/断电等。2、kill-9强制关闭mysqld3、表空间导出导入过程中发生的ibd文件损...
Perform cost-based optimization of table order and access path selection. JOIN::make_join_plan() : Set up join order and initial access paths. Post-join order optimization. substitute_for_best_equal_field : Create optimal table conditions from the where clause and the join conditions. make...
public MySqlTableDataset withStructure(Object structure) Set the structure property: Columns that define the structure of the dataset. Type: array (or Expression with resultType array), itemType: DatasetDataElement. Overrides: MySqlTableDataset.withStructure(Object structure) Parameters: structure with...
CREATE TABLE ... SELECT语句 在事务内创建TEMPORARY TABLE或DROP TEMPORARY TABLE语句 更新事务和非事务表的事务或语句。 enforce_gtid_consistency仅在语句进行二进制日志记录时生效。如果在服务器上禁用了二进制日志记录,或者由于过滤器删除了语句而未将语句写入二进制日志,则不会对未记录的语句检查或强制执行GTID一致...