Rails:如何选择带有字段名的行(mysql)
我正在寻找一种方法来获取mysql查询的结果集,该结果集类似于ActiveRecord::Base.connection.select_rows的输出,但也包含结果的列名作为第一个元素 例如:Rails:如何选择带有字段名的行(mysql),mysql,ruby-on-rails,activerecord,Mysql,Ruby On Rails,Activerecord,我正在寻找一种方法来获取mysql查询的结果集,该结果集类似于ActiveRecord::Base.connection.select_rows的输出,但也包含结果的列名作为第一个元素 例如: ActiveRecord::Base.connection.select_rows_with_fields("SELECT id,name FROM users") => [["id", "name"], ["1","amy"],["2","bob"],["3","cam"]] 选择\u
ActiveRecord::Base.connection.select_rows_with_fields("SELECT id,name FROM users")
=> [["id", "name"], ["1","amy"],["2","bob"],["3","cam"]]
选择\u行\u和\u字段:
module ActiveRecord
module ConnectionAdapters
class Mysql2Adapter
def select_rows_with_fields(sql)
result = execute(sql)
rows = result.to_a
rows.unshift(result.fields)
end
end
end
end