<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
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<mapper namespace="com.gkhy.exam.system.mapper.ExStudentAnswerMapper">
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<select id="countByPaperId" resultType="java.lang.Integer">
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select count(1) from ex_student_answer where paper_id=#{paperId} and student_id=#{studentId}
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</select>
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<select id="selectPassCount" resultType="java.lang.Integer">
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select count(1) from ex_student_answer a
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inner join ex_question b on b.id=a.question_id
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where a.paper_id=#{paperId} and a.student_id=#{studentId} and b.question_type=#{questionType} and a.passed=1
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</select>
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<select id="getStudentAnswer" resultType="com.gkhy.exam.system.domain.ExStudentAnswer">
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select * from ex_student_answer where paper_id=#{paperId} and student_id=#{studentId} and question_id=#{questionId}
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</select>
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</mapper>
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