批量更新sql

smarking/src/main/resources/mapper/papercheck/MsPaperCheckTeacherTaskMapper.xml

         update ms_paper_check_teacher_task
         <trim prefix="set" suffixOverrides=",">
             <trim prefix="teacherid = case mpcttid" suffix="end,">
-                <foreach collection="tasks" item="item" separator="when">
-                    ${item.mpcttid} then ${item.teacherid}
+                <foreach collection="tasks" item="item" separator=" ">
+                    when #{item.mpcttid} then #{item.teacherid}
                 </foreach>
             </trim>
             <trim prefix="taskorder = case mpcttid" suffix="end,">
-                <foreach collection="tasks" item="item" separator="when">
-                    ${item.mpcttid} then ${item.taskorder}
+                <foreach collection="tasks" item="item" separator=" ">
+                    when #{item.mpcttid} then #{item.taskorder}
                 </foreach>
             </trim>
         </trim>

smarking/src/main/resources/mapper/stupaper/MsPaperStudentQuestionMapper.xml

     <update id="checkByMptqidAndStudentId">
         update ms_paper_student_question set checked=#{block.checked}
         <trim prefix="stuscore = case mptqid" suffix="end,">
-            <foreach collection="list" item="q" separator="when">
-                #{q.mptqid} then ifnull(#{q.stuscore},stuscore)
+            <foreach collection="list" item="q" separator=" ">
+                when #{q.mptqid} then ifnull(#{q.stuscore},stuscore)
             </foreach>
         </trim>
         <if test="block.firstcime!=null and block.firstcime!=0">
             <trim prefix="firstccore = case mptqid" suffix="end,">
-               <foreach collection="list" item="q" separator="when">
-                   #{q.mptqid} then #{q.firstccore}
+               <foreach collection="list" item="q" separator=" ">
+                   when #{q.mptqid} then #{q.firstccore}
                </foreach>
             </trim>
             <trim prefix="firstcime = case mptqid" suffix="end,">
-                <foreach collection="list" item="q" separator="when">
-                    #{q.mptqid} then #{q.firstcime}
+                <foreach collection="list" item="q" separator=" ">
+                    when #{q.mptqid} then #{q.firstcime}
                 </foreach>
             </trim>
         </if>
         <if test="block.secondctime!=null and block.secondctime!=0">
             <trim prefix="secondcscore = case mptqid" suffix="end,">
-                <foreach collection="list" item="q" separator="when">
-                    #{q.mptqid} then #{q.secondcscore}
+                <foreach collection="list" item="q" separator=" ">
+                    when #{q.mptqid} then #{q.secondcscore}
                 </foreach>
             </trim>
             <trim prefix="secondctime = case mptqid" suffix="end,">
-                <foreach collection="list" item="q" separator="when">
-                    #{q.mptqid} then #{q.secondctime}
+                <foreach collection="list" item="q" separator=" ">
+                    when #{q.mptqid} then #{q.secondctime}
                 </foreach>
             </trim>
         </if>