活动记录查询SELECT_ALL，备言

想写一份声明中象下面这样：活动记录查询SELECT_ALL，备言

@fofs = FileOrFolder.connection.select_all("select * from newtestdocB.file_or_folders where name like","%#{params[:search]}%")

它原来是mysql的控制台上的错误查询。不占用变量％＃{PARAMS [：搜索]}百分比值来查询

请纠正我的查询......

控制台消息：

Parameters: {"search"=>"do", "cluster_id"=>"2", "datasetid"=>"1", "id"=>"1"} 
    %do% (0.2ms) select * from newtestdocB.file_or_folders where name like 

ActiveRecord::StatementInvalid (Mysql2::Error: 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 '' at line 1: select * from newtestdocB.file_or_folders where name like):

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2013-07-11 user2569524

Try a placeholder ?

“select * from newtestdocB.file_or_folders where name like？”，“％＃{params [：search]}％”

查看问号在上面的声明中，将用逗号后面的参数填充。

如果上面的语句不工作，这必须努力，用“+”来连接，提防未来的空间“喜欢”

sql = "select * from newtestdocB.file_or_folders where name like <<space>>" + "%#{params[:search]}%" 

FileOrFolder.connection.select_all(sql)

来源

2013-07-11 16:28:12 beck03076

它不工作.....它以它作为一个完整的字符串和类似的参数它不在引号中...... 输出sql：select * from newtestdocB.file_or_folders其中名称如％d％............... ..... ％d％未加引号... – user2569524

“select * from newtestdocB.file_or_folders其中名称如<< >>”+“％＃{params [：search]}％”...也不起作用！ – user2569524

“select * from newtestdocB.file_or_folders其中名称如”+“％＃{params [：search]}％”..其中不存在<>，我的意思是留一个字面空间...... – beck03076

活动记录查询SELECT_ALL，备言

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