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Primary key or Unique index?

...1 (foo, bar) VALUES (3, 1); -- OK INSERT INTO table1 (foo, bar) VALUES (1, 4); -- Fails! Duplicate entry '1' for key 'ux_table1_foo' The last insert fails because it violates the unique index on column foo when it tries to insert the value 1 into this column for a second time. In MySQL a unique ...
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UILabel sizeToFit doesn't work with autolayout ios6

... 407 Please note that in most cases Matt's solution works as expected. But if it doesn't work for y...
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How to drop all tables in a SQL Server database?

... | edited Mar 4 '19 at 20:13 Justin Dearing 12.3k1919 gold badges7777 silver badges142142 bronze badges ...
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What does the Reflect object do in JavaScript?

... answered Aug 30 '14 at 19:27 GitaarLABGitaarLAB 12.9k99 gold badges4747 silver badges7373 bronze badges ...
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Linux环境离线安装docker&docker-compose - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...ocker版本下载 || Docker-compose版本下载 备注:此地址自2024年7月无法访问下载docker版本,小编已经将可以使用的docker、docker-compose版本整理在百度网盘中如有需要可以自行获取。 2)docker、docker-compose版本获取:百度网盘获取方式...
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ImportError: No module named MySQLdb

... answered Mar 7 '14 at 14:36 DazWorrallDazWorrall 10.7k22 gold badges3737 silver badges3232 bronze badges ...
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How to intercept click on link in UITextView?

... 145 Update: From ios10, - (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)UR...
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JSONP with ASP.NET Web API

I am working on creating a new set of services in ASP.MVC MVC 4 using the Web API. So far, it's great. I have created the service and gotten it to work, and now I am trying to consume it using JQuery. I can get back the JSON string using Fiddler, and it seems to be ok, but because the service exi...
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What does the C++ standard state the size of int, long type to be?

... C++ types. I know that it depends on the architecture (16 bits, 32 bits, 64 bits) and the compiler. 24 Answers ...
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What's the difference between Spring Data's MongoTemplate and MongoRepository?

... answered Jun 9 '13 at 14:30 Oliver DrotbohmOliver Drotbohm 67.7k1616 gold badges196196 silver badges193193 bronze badges ...