ACTIVE0sec, processno3946, OS thread id1151088992inserting, thread declared inside InnoDB5006.mysql tablesinuse1, locked17.3lock struct(s), heap size368, undo log entries18.MySQL thread id9697561, query id188161264localhost rootupdate9
$result = mysql_query($showquery); while($array = mysql_fetch_array($result)) { echo "<br><br> Table Name : ".$array['Name']."<br /> ... ... When the data file was last updated. : ".$array ['Update_time']."<br />"; } } === This...
For the ins_sum trigger defined in Section 23.3, “Using Triggers”, the output of SHOW TRIGGERS is as shown here: mysql> SHOW TRIGGERS LIKE 'acc%'\G *** 1. row *** Trigger ins_sum Event: INSERT Table: account Statement: SET @sum = @sum + NEW.amount Timing: BEFORE Created...
使用整块方式(bulk)能够加快插入操作( INSERT ... SELECT, INSERT ... VALUES (...), (...), ..., 和 LOAD DATA INFILE) 的速度和效率。该参数限制每个线程使用的树形结构缓存大小,如果设置为0则禁用该加速缓存功能。注意:该参数对应的缓存操作只能用户向非空数据表中执行插入操作!默认值为 8MB。 12. ...
For the ins_sum trigger defined in Section 27.3, “Using Triggers”, the output of SHOW TRIGGERS is as shown here: mysql> SHOW TRIGGERS LIKE 'acc%'\G *** 1. row *** Trigger ins_sum Event: INSERT Table: account Statement: SET @sum = @sum + NEW.amount Timing: BEFORE Created...
ON MySQL在CREATE TABLE中用DELAY_KEY_WRITE选项。这是默认值。 ALL 用启用DELAY_KEY_WRITE选项创建表的相同方法对所有新打开表的进行处理。 如果启用了DELAY_KEY_WRITE,说明使用该项的表的键缓冲区在每次更新索引时不被清空,只有关闭表时才清空。遮掩盖可以大大加快键的写操作,但如果你使用该特性,你应用--myisam...
It's perfectly fine to use SQL_Latin1_General_CP1_CI_AS to store German characters. It's important that when you insert the data, you want to denote the value with N'. This makes your value a Unicode. This script shows it works just fine. create table test(n sysname collate SQL_Lat...
insert into s2015224476.sc values('200215122','2',88); 6. 把对表SC的查询权限授予所有用户。 GRANT select ON sc TO public; 1) 让“S学号u2”用户查询S20130001用户的SC表中选修了3号课程的学生的学号及其成绩,查询结果按分数的降序排列 select sno,grade from s2015224476.sc order by grade desc; ...
If any data is inserted before SHOW TABLE STATUS 'table, Auto_increment value is populated, but then there are other problems which will be reported separately. How to repeat: mysql> select @@version; +---+ | @@version | +---+ | 8.0.11-debug | +---+ 1 row in set (0.00 sec)...
()How to repeat:1. create table with many partitions 2. run ./testcase that inserted data into partitioned table 3. while testcase is running in the new connection run "SHOW TABLE STATUS" after 3-5 minutes MySQL server crashes.