mysql数据类型和用途
Trying to upload image from iPhone to server using ASIFormDataRequest
I\'m trying to use ASIFormDataRequest to send a photo image from my iPhone app to my server. When I do so, the server sends back an error[详细]
2022-12-21 20:01 分类：问答How to display descriptive error message?
I have a problem in displaying the error message in Ruby on Rails. I am using: rescue => Exception ex[详细]
2022-12-21 18:44 分类：问答璇曠濠村効鍙栧嵉浼氱柤涔堬紵？
銆€鈥冣€冮€氳繃璇曠鎶€鏈姪瀛曞凡缁忔垚涓烘不鐤椾笉瀛曚笉鑲茬棁涓€绉嶈緝涓哄父瑙佺殑娌荤枟鏂规硶锛岃€屽彇鍗典篃鏄叾涓潪甯搁噸瑕佺殑涓€涓楠わ紝鎵€浠ヨ澶氬コ鎬ч兘浼氳闂埌鍙栧嵉[详细]
2022-12-21 18:34 分类：问答人工在可控环境下加速基因变异或进化？如何做到的？？
123457297 2022-开发者_如何学运维05-09 20:39 人工加速基因变异的方法很多，个人觉得杂交、基因重组，还有可以通过射线照射等让基因突变，从而加速其变异。沦落人在2017[详细]
2022-12-21 18:22 分类：问答How to share code across models? (Rails 2.3)
I have a couple of methods I\'d like to share between models rather than copy开发者_开发百科ing and pasting them. In a controller, I can do this by putting the methods in application_controller.rb whi[详细]
2022-12-21 17:59 分类：问答成语小秀才第481关至第490关答案？
不吵不闹的小温柔 2022-05-11 16:09 成语小秀才是微信上很有趣的一个成语游戏，下面我们就来看看它481关至第490关答案吧！操作方法01微信成语小秀才第481关答案仰人鼻息、异香扑鼻开发者_C百科、宝马香车、不贪[详细]
2022-12-21 13:06 分类：问答Normalizing a table, from one to the other
I\'m trying to normalize a mysql database.... I currently have a table that contains 11 columns for \"categories\". The first column is a user_id and the other 10 are category_id_1 - category_id_10.[详细]
2022-12-21 11:18 分类：问答《三十而已》在外打拼的游子，在走出家门那一刻，再也没有家了？
或许，对于我们这些为了生计而奋斗的流浪者来说，在经历了一个从无到有的过程后，仰望着城市里成千上万的高楼，脱口而出“这么多建筑里，没有我的位置。”当我们成为这个城市的一员，有了自己的小窝，我们都会有[详细]
2022-12-21 07:57 分类：问答where query count result > 0
I need to do a query like this: SELECT wposts.ID FROM posts wposts WHERE ( SELECT CO开发者_StackOverflowUNT(ID) FROM surveys WHERE POST_ID = wposts.ID) > 0[详细]
2022-12-21 07:42 分类：问答
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