mysql平均值函数

MySQL中的平均值函数是AVG()函数。它可以用来计算指定字段的平均值，并在统计时忽略NULL值。例如，要计算mdz_questionnaire_judge_member表中学生成绩的平均值，可以使用以下SQL语句：
SELECT AVG(score) FROM mdz_questionnaire_judge_member;
这将返回学生成绩的平均值。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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