08 2018 档案
摘要:SQL TYPE 1:for bind value sql , first create a good plan with literal and with good profile. then use sqlT to replace the profile‘’s good plan to bind
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摘要:https://blog.csdn.net/lukeUnique/article/details/79331779 https://mauro-pagano.com/2014/10/27/when-the-going-gets-tough-the-tough-get-going-aka-sqlt-x
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摘要:https://blog.csdn.net/steadfast123/article/details/46965125
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摘要:https://blog.csdn.net/python2014/article/details/21231971 麻省理工的随机走动模块,还不错,三天搞懂了,不过懂得不彻底。 记录下修改的代码 import math, random, pylab class Location(object): #
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摘要:转自:http://blog.csdn.net/liyong199012/article/details/8948952 游标的概念: 游标是SQL的一个内存工作区,由系统或用户以变量的形式定义。游标的作用就是用于临时存储从数据库中提取的数据块。在某些情况下,需要把数据从存放在磁盘的表中调到计算机内
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摘要:3. When lowering the value of COMPATIBLE: You cannot start the database with lower compatibility, unless restoring from a backup. This is because data
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