SQL 查询的范围语法不正确答案

【问题标题】：Incorrect Scope Syntax with SQL QuerySQL 查询的范围语法不正确
【发布时间】：2015-06-03 20:19:42
【问题描述】：

我正在尝试将查询限制为仅返回属于已登录用户且在日期范围内的结果。这是范围：

scope :unpaid, ->(start_date, end_date, current_user) { joins('LEFT OUTER JOIN carrier_commissions ON
  dealer_commissions.phone_id = carrier_commissions.phone_id AND
  dealer_commissions.name = carrier_commissions.name')
  .where('carrier_commissions.id IS NULL').where('customer_id: current_user.customer.id, created_at: start_date..end_date') }

  def self.reconciliation(start_date, end_date, current_user)

    ...

    dealer_commissions.unpaid.each do |unpaid|
      unpaid.update(status: "Unpaid", discrepancy_balance: unpaid.payment)
      if unpaid.initial_discrepancy.blank?
        unpaid.update(initial_discrepancy: unpaid.payment)
      end
    end

  end

这里是 reconcile 具有实际参数的控制器操作：

  def reconcile
    start_date = Date.new(params[:range][:"start_date(1i)"].to_i,params[:range][:"start_date(2i)"].to_i,params[:range][:"start_date(3i)"].to_i)
    end_date = Date.new(params[:range][:"end_date(1i)"].to_i,params[:range][:"end_date(2i)"].to_i,params[:range][:"end_date(3i)"].to_i)
    DealerCommission.reconciliation(start_date, end_date, current_user)
    redirect_to dealer_commissions_url, notice: 'Dealer commissions reconciled.'
  end

这是我的日志中的一个示例：

SELECT COUNT(*) FROM "dealer_commissions" LEFT OUTER JOIN carrier_commissions ON
    dealer_commissions.phone_id = carrier_commissions.phone_id AND
    dealer_commissions.name = carrier_commissions.name WHERE "dealer_commissions"."customer_id" = ? AND ("dealer_commissions"."created_at" BETWEEN '2015-02-03' AND '2015-06-03') AND (carrier_commissions.id IS NULL) AND (customer_id: current_user.customer.id, created_at: start_date..end_date)  [["customer_id", 8]]
SQLite3::SQLException: unrecognized token: ":": SELECT COUNT(*) FROM "dealer_commissions" LEFT OUTER JOIN carrier_commissions ON
    dealer_commissions.phone_id = carrier_commissions.phone_id AND
    dealer_commissions.name = carrier_commissions.name WHERE "dealer_commissions"."customer_id" = ? AND ("dealer_commissions"."created_at" BETWEEN '2015-02-03' AND '2015-06-03') AND (carrier_commissions.id IS NULL) AND (customer_id: current_user.customer.id, created_at: start_date..end_date)

目标是获取符合这些条件的记录 (start date, end date, current_user)。

【问题讨论】：

(customer_id: current_user.customer.id, created_at: start_date..end_date) 看起来不像是有效的 SQL。

标签： sql ruby-on-rails ruby-on-rails-4

【解决方案1】：

您需要更正语法。目前你正在将一个静态字符串传递给 mysql，不包括你的 rails 变量。

.where('customer_id = ? AND created_at > ? AND created_at < ?', current_user.customer.id, start_date, end_date)

【讨论】：

错误：#<0x00000003ea31b8>