mybatisPlus 使用mapper多表多鏈接查詢

這個問題花了我3個小時，。先上圖，之後再解釋sql <select id="getComJob" parameterType="List" resultType="hashMap"> select job.*, jobclass1.name as catname1, jobclass2.name as catname2, jobclass3.name as catname3,

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