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JDBC
JDBC的概念:java database connectivity (java 数据库连接 ) 本质就是 sun公司定义的一套操作所有关系型数据库的规则,即接口。各各数据库厂商去实现接口,提供jar包,我们使用jar包中的实现类来操作数据库 结果: 参数resultSetType指定ResultS ...
分类:数据库   时间:2019-08-11 15:34:52    阅读次数:121
django orm 分页(paginator)取数据出现警告manage.py:1: UnorderedObjectListWarning: Pagination may yield inconsistent results with an unordered object_list: <class 'sign.models.Guest'> QuerySet.
使用django的orm做分页(Paginator)时出现了下面的警告 网上搜的是取数据前要先排序,加入下面代码后取数据就不会出现警告了 ...
分类:其他好文   时间:2019-07-29 10:21:49    阅读次数:259
2743711 - Possible Unexpected Results When Using Query With an ORDER BY Clause on a Rowstore Table With a Parallelized Search on a Cpbtree-Type Index
2743711 Possible Unexpected Results When Using Query With an ORDER BY Clause on a Rowstore Table With a Parallelized Search on a Cpbtree Type Index Ve ...
分类:其他好文   时间:2019-07-04 11:44:12    阅读次数:104
Git push “fatal: Authentication failed ”
Git push “fatal: Authentication failed ” 问题原因 之前设置了两步验证 解决方法 更新分支 参考资料 "1].[Git push results in “Authentication Failed”" ...
分类:其他好文   时间:2019-07-02 22:52:11    阅读次数:128
LeetCode-241 Different Ways to Add Parentheses
题目描述 Given a string of numbers and operators, return all possible results from computing all the different possible ways to group numbers and operator ...
分类:其他好文   时间:2019-07-01 19:56:16    阅读次数:98
通过接口指定appstore 的应用id获取Bundleid
{ "resultCount":1, "results": [{"screenshotUrls":["https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/af/f1/bc/aff1bc21-0a1c-d39f-1f5f-7ff5a62de657 ...
分类:移动开发   时间:2019-06-21 09:44:51    阅读次数:346
How to read a paper efficiently
How to read a paper efficiently Structure of a Journal a Journal Article 1. Title 2. Keywords 3. Abstract 4. Introduction 5. Experimental 6. Results a ...
分类:其他好文   时间:2019-06-18 10:30:51    阅读次数:117
Receiving Results from an Asynchronous RFC
The SET USER COMMAND ‘OKCD’ statement replaces the REFRESH SCREEN command. REFRESH SCREEN is no longer maintained and should therefore not be used.if ...
分类:其他好文   时间:2019-06-14 21:44:00    阅读次数:141
Data of Ch5 --Dual rotor
* Results*Conclusion*- little effect of rear rotor on Cp_1- Cp1 is independent of TI** TI effect on single-rotor, front, | cp | ct | TI | TSR || | | 1 ...
分类:其他好文   时间:2019-06-11 11:10:37    阅读次数:98
django定时任务
django celery beat django celery results 任务执行结果 django crontab 安装: django apscheduler pip install apscheduler pip install django apscheduler 分布式定时任务:c ...
分类:其他好文   时间:2019-06-11 00:54:31    阅读次数:132
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