[英]Get results of SQL Query as string in Rails
when i run a complicated sql query from the command line like this 当我从这样的命令行运行复杂的sql查询时
sqlite3 db/development.sqlite3 < queries.sql
i get a result like this 我得到这样的结果
Competency Name|Component Name|3.77|4.0|0.23
Another Competency Name|Another Component Name|3.77|4.0|0.23
which i can easily parse like this 我可以像这样轻松解析
hidden_strengh_strings = results.split("\n")[1..-1];
hidden_strengh_strings.each do |hidden_strength_string|
hidden_strengh_values = hidden_strength_string.split("|");
hidden_strength = {}
hidden_strength.merge!(:competency => hidden_strengh_values[0]);
hidden_strength.merge!(:component => hidden_strengh_values[1]);
hidden_strength.merge!(:reviewer_average_score => hidden_strengh_values[2]);
hidden_strength.merge!(:reviewee_average_score => hidden_strengh_values[3]);
hidden_strength.merge!(:exceedance => hidden_strengh_values[4]);
hidden_strengths << hidden_strength
end
but i have no idea how to get these results from within ActiveRecord. 但我不知道如何从ActiveRecord中获得这些结果。
results = ActiveRecord::Base.connection.execute(File.open(Rails.root.join('queries.sql'), 'r') { |f| f.read } );
doesn't seem to do what i want it to. 似乎没有按照我的意愿去做。
i'd be happy to take any approach to solve this problem. 我很乐意采取任何方法来解决这个问题。 even rewriting the sql from within the ActiveRecord DSL. 甚至从ActiveRecord DSL内重写sql。 but i need help finding the right direction. 但是我需要帮助找到正确的方向。
thanks : ) 谢谢 : )
Nishant lead me to the solution. Nishant带领我找到解决方案。
ActiveRecord::Base.connection.execute
Works fine its just that the query started with: 工作良好,只是查询始于:
select 'HIDDEN STRENGTHS';
so exec ended at the semicolon. 因此高管以分号结尾。
Thanks! 谢谢!
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