您好,我在我的 SQL 查询中遇到了一个错误,无法弄清楚是什么问题。这是迄今为止在 Barmar 的帮助下的查询。
2 3 4 5 6 7 8 9 10 11 12 | , SUM(IF(s.status = 'cancelado', 1, 0)) AS count_cancelado, SUM(IF(s.status = 'noacion', 1, 0)) AS count_noacion, SUM(IF(s.status = 'ama_de_casa', 1, 0)) AS count_ama_de_casa , SUM(IF(s.status = 'cliente_externo', 1, 0)) AS count_cliente_externo FROM cursos_modulos AS c LEFT JOIN subscriptions AS s ON s.curso_id = c.id LEFT JOIN users AS u ON u.userID = s.user_id GROUP BY c.id WHERE 1"; if (!empty($id)) { $query .=" AND c.id = '$id'"; } if (!empty($ciudad)) { $query .=" AND c.ciudad = '$ciudad'"; } if (!empty($tipo)) { $query .=" AND c.tipo = '$tipo'"; } if (!empty($titulo)) { $query .=" AND c.titulo = '$titulo'"; } if (!empty($status)) { $query .=" AND c.status = '$status'"; } $paginate = new pagination($page, $query, $options); |
我得到的错误信息如下:
Fatal error: Uncaught exception 'PDOException' with message
'SQLSTATE[42000]: Syntax error or access violation: 1064 You have an
error in your SQL syntax; check the manual that corresponds to your
MySQL server version for the right syntax to use near 'WHERE 1 AND
c.id = '1' LIMIT 0, 30' at line 6' in
E:\\xampp\\htdocs\\admin\\class\\pagination.php:376 Stack trace: #0
E:\\xampp\\htdocs\\admin\\class\\pagination.php(376):
PDOStatement->execute() #1
E:\\xampp\\htdocs\\admin\\class\\pagination.php(202):
pagination->excecute_query() #2
E:\\xampp\\htdocs\\admin\\class\\pagination.php(162):
pagination->run(1, 'SELECT c., cou...', Array) #3
E:\\xampp\\htdocs\\admin\\search.php(146):
pagination->__construct(1, 'SELECT c., cou...', Array) #4 {main}
thrown in E:\\xampp\\htdocs\\admin\\class\\pagination.php on line
376
2 3 4 5 6 7 8 9 10 11 12 | , SUM(IF(s.status = 'cancelado', 1, 0)) AS count_cancelado, SUM(IF(s.status = 'noacion', 1, 0)) AS count_noacion, SUM(IF(s.status = 'ama_de_casa', 1, 0)) AS count_ama_de_casa , SUM(IF(s.status = 'cliente_externo', 1, 0)) AS count_cliente_externo FROM cursos_modulos AS c LEFT JOIN subscriptions AS s ON s.curso_id = c.id LEFT JOIN users AS u ON u.userID = s.user_id WHERE 1"; if (!empty($id)) { $query .=" AND c.id = '$id'"; } if (!empty($ciudad)) { $query .=" AND c.ciudad = '$ciudad'"; } if (!empty($tipo)) { $query .=" AND c.tipo = '$tipo'"; } if (!empty($titulo)) { $query .=" AND c.titulo = '$titulo'"; } if (!empty($status)) { $query .=" AND c.status = '$status'"; } $query .=" GROUP BY c.id"; |
以下不会引发 1064 错误:
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | ( id int not null ); create table subscriptions ( curso_id int not null, user_id int not null, status varchar(100) not null ); create table users ( userID int not null ); SELECT c.id, count(s.curso_id) as count, SUM(IF(s.status = 'aprobado', 1, 0)) AS count_approved, SUM(IF(s.status = 'cupolleno', 1, 0)) AS count_cupolleno, SUM(IF(s.status = 'cancelado', 1, 0)) AS count_cancelado, SUM(IF(s.status = 'noacion', 1, 0)) AS count_noacion, SUM(IF(s.status = 'ama_de_casa', 1, 0)) AS count_ama_de_casa, SUM(IF(s.status = 'cliente_externo', 1, 0)) AS count_cliente_externo FROM cursos_modulos AS c LEFT JOIN subscriptions AS s ON s.curso_id = c.id LEFT JOIN users AS u ON u.userID = s.user_id GROUP BY c.id |
大约一年前,我决定确保每个包含非唯一文本的Flash通知都将从模块中的方法中获取文本。我这样做的最初原因是为了避免一遍又一遍地输入相同的字符串。如果我想更改措辞,我可以在一个地方轻松完成,而且一遍又一遍地重复同一件事而出现拼写错误的可能性也会降低。我最终得到的是这样的:moduleMessagesdefformat_error_messages(errors)errors.map{|attribute,message|"Error:#{attribute.to_s.titleize}#{message}."}enddeferror_message_could_not_find(obje
我想在一个没有Sass引擎的类中使用Sass颜色函数。我已经在项目中使用了sassgem,所以我认为搭载会像以下一样简单:classRectangleincludeSass::Script::FunctionsdefcolorSass::Script::Color.new([0x82,0x39,0x06])enddefrender#hamlengineexecutedwithcontextofself#sothatwithintemlateicouldcall#%stop{offset:'0%',stop:{color:lighten(color)}}endend更新:参见上面的#re
我遵循MichaelHartl的“RubyonRails教程:学习Web开发”,并创建了检查用户名和电子邮件长度有效性的测试(名称最多50个字符,电子邮件最多255个字符)。test/helpers/application_helper_test.rb的内容是:require'test_helper'classApplicationHelperTest在运行bundleexecraketest时,所有测试都通过了,但我看到以下消息在最后被标记为错误:ERROR["test_full_title_helper",ApplicationHelperTest,1.820016791]test
我正在尝试用ruby中的gsub函数替换字符串中的某些单词,但有时效果很好,在某些情况下会出现此错误?这种格式有什么问题吗NoMethodError(undefinedmethod`gsub!'fornil:NilClass):模型.rbclassTest"replacethisID1",WAY=>"replacethisID2andID3",DELTA=>"replacethisID4"}end另一个模型.rbclassCheck 最佳答案 啊,我找到了!gsub!是一个非常奇怪的方法。首先,它替换了字符串,所以它实际上修改了
我是rails的新手,想在form字段上应用验证。myviewsnew.html.erb.....模拟.rbclassSimulation{:in=>1..25,:message=>'Therowmustbebetween1and25'}end模拟Controller.rbclassSimulationsController我想检查模型类中row字段的整数范围,如果不在范围内则返回错误信息。我可以检查上面代码的范围,但无法返回错误消息提前致谢 最佳答案 关键是您使用的是模型表单,一种显示ActiveRecord模型实例属性的表单。c
我正在尝试编写一个将文件上传到AWS并公开该文件的Ruby脚本。我做了以下事情:s3=Aws::S3::Resource.new(credentials:Aws::Credentials.new(KEY,SECRET),region:'us-west-2')obj=s3.bucket('stg-db').object('key')obj.upload_file(filename)这似乎工作正常,除了该文件不是公开可用的,而且我无法获得它的公共(public)URL。但是当我登录到S3时,我可以正常查看我的文件。为了使其公开可用,我将最后一行更改为obj.upload_file(file
我有一些代码在几个不同的位置之一运行:作为具有调试输出的命令行工具,作为不接受任何输出的更大程序的一部分,以及在Rails环境中。有时我需要根据代码的位置对代码进行细微的更改,我意识到以下样式似乎可行:print"Testingnestedfunctionsdefined\n"CLI=trueifCLIdeftest_printprint"CommandLineVersion\n"endelsedeftest_printprint"ReleaseVersion\n"endendtest_print()这导致:TestingnestedfunctionsdefinedCommandLin
我克隆了一个rails仓库,我现在正尝试捆绑安装背景:OSXElCapitanruby2.2.3p173(2015-08-18修订版51636)[x86_64-darwin15]rails-v在您的Gemfile中列出的或native可用的任何gem源中找不到gem'pg(>=0)ruby'。运行bundleinstall以安装缺少的gem。bundleinstallFetchinggemmetadatafromhttps://rubygems.org/............Fetchingversionmetadatafromhttps://rubygems.org/...Fe
在Cooper的书BeginningRuby中,第166页有一个我无法重现的示例。classSongincludeComparableattr_accessor:lengthdef(other)@lengthother.lengthenddefinitialize(song_name,length)@song_name=song_name@length=lengthendenda=Song.new('Rockaroundtheclock',143)b=Song.new('BohemianRhapsody',544)c=Song.new('MinuteWaltz',60)a.betwee
我是Google云的新手,我正在尝试对其进行首次部署。我的第一个部署是RubyonRails项目。我基本上是在关注thisguideinthegoogleclouddocumentation.唯一的区别是我使用的是我自己的项目,而不是他们提供的“helloworld”项目。这是我的app.yaml文件runtime:customvm:trueentrypoint:bundleexecrackup-p8080-Eproductionconfig.ruresources:cpu:0.5memory_gb:1.3disk_size_gb:10当我转到我的项目目录并运行gcloudprevie