Start iCarScan is alternative of Super X431 iDiag, it’ll make your Android smartphone or tablet right into a experienced automotive analysis instrument. Just communication automotive’s OBDII socket via BlueTooth using an Android products, you could r…

Autonumen.com release new Launch iCar Scan for Android,Launch iCarScan Bluetooth Scanner is update version of X431 iDiag.support full systems and full function diagnosis for world-wide cars, it is with 5 brands car software by default, if you need mo…

LanguageManual DML Hive Data Manipulation Language Hive Data Manipulation Language Loading files into tables Syntax Synopsis Notes Inserting data into Hive Tables from queries Syntax Synopsis Notes Dynamic Partition Inserts Example Additional Documen…

LAUNCH X431 Easydiag 2.0 is basically the same OBD-II Bluetooth device – but the software supplied with it is different – and the way it’s sold is different. Easydiag 2.0 is without ANY vehicle/manufacturer specific diagnostics capability. As deliver…

Porsche Piwis tester 3 PT3G VCI with V37.250.020 Piwis 3 Software unlimited license installed on Full new Panasonic CF-54 laptop ready to use new release for Piwis III diagnostics and with Porsche PPN subscription for Porsche Online  programming. Wha…

OR Subgenomes Variation among Birds, Sea Turtle and Alligator 由 该图数据计算每种鸟的relative percentage,得到下图: 然后得到: (1)得到(总体): 1.The 48 avian genomes lacked OR1/3/7 genes and only 3 members were present in alligator and 1 in sea turtle. 2.In addition, OR12 gen…

前言 我比较喜欢安静,大概和我喜欢研究和琢磨技术原因相关吧,刚好到了元旦节,这几天可以好好学习下EF Core,同时在项目当中用到EF Core,借此机会给予比较深入的理解,这里我们只讲解和EF 6.x中不同,相同的则不再叙述. EntityFramework Core 1.1方法理论详解 当我们利用EF Core查询数据库时如果我们不显式关闭变更追踪的话,此时实体是被追踪的,关于变更追踪我们下节再叙.就像我们之前在EF 6.x中讨论的那样,不建议手动关闭变更追踪,对于有些特殊情况下,关闭变更追…

pt-online-schema-change在对表进行表结构变更时,会创建三个触发器. 如下文测试案例中的t2表,表结构如下: mysql> show create table t2\G . row *************************** Table: t2 Create Table: CREATE TABLE `t2` ( `id` ) NOT NULL AUTO_INCREMENT, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CH…

正常查询语句中TOP的运用: SELECT TOP 1000 * FROM MP_MemberGrade   随意更新一张表中满足条件的前N条数据: UPDATE TOP (1) MP_Member SET FKGradeID=2 WHERE IsDeleted=2   更新A表中满足B表前N条记录的数据 UPDATE MP_Member SET FKGradeID=2 FROM MP_Member A LEFT JOIN (SELECT TOP 10 * FROM MP_MemberGrade…

mysql中You can't specify target table <tbl> for update in FROM clause错误的意思是说,不能先select出同一表中的某些值,再update这个表(在同一语句中). 如下l: 需要将select出的结果再通过中间表select一遍,就可以规避了错误. 如下: PS:这个问题只出现于mysql,sql service 和 oracle 不会出现此问题.…