在Rails4中将数据库从sqlite3切换到mysql时出现strftime错误 [英] strftime error while switching my database from sqlite3 to mysql in Rails4

问题描述

最近我将数据库从sqlite3更改为mysql.运行项目时，我在使用此查询的文件之一中遇到此错误.

Recently i changed my database from sqlite3 to mysql.When i ran my project i am getting this error in one of the file which is using this query.

date =今天的日期+ 1

date = Date.today + 1

@employees = Employee.where(状态=?AND strftime('％d/％m'，date_of_birth)=?"，活动"，date.strftime('％d/％m')

@employees = Employee.where("status = ? AND strftime('%d/%m', date_of_birth) = ?", "Active" , date.strftime('%d/%m')

ActionView::Template::Error (Mysql2::Error: FUNCTION hrms_development.strftime does not exist: SELECT COUNT(*) FROM `employees` WHERE (status = 'Active' AND strftime('%d/%m', date_of_birth) = '28/03')):
    210:             
    211:               <% date = Date.today %>
    212:              <% @employees = Employee.where("status = ? AND strftime('%d/%m', date_of_birth) = ?", "Active" , date.strftime('%d/%m')) %>
    213:             <% if @employees.empty? %>
    214:              
    215:             <%else%>
    216:               <% @employees.each do |e| %>
  app/views/home/_group_admin.html.erb:213:in `_app_views_home__group_admin_html_erb___2522183600721478262_91627100'
  app/views/home/index.html.erb:17:in `_app_views_home_index_html_erb__2772204906267359422_86967120'



ActionView::Template::Error: Mysql2::Error: FUNCTION hrms_development.strftime does not exist: SELECT COUNT(*) FROM `employees` WHERE (status = 'Active' AND strftime('%d/%m', date_of_birth) = '28/03')

推荐答案

只需替换即可尝试

<% @employees = Employee.where("status = ? AND strftime('%d/%m', date_of_birth) = ?", "Active" , date.strftime('%d/%m')) %>

使用

<% @employees = Employee.where("status = ? AND DATE_FORMAT(date_of_birth,'%d/%m') = ?", "Active" , date.strftime('%d/%m')) %>

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