1.Spring-mybatis-动态SQL-sql&include标签

springboot-mybatis-crud/src/main/resources/com/inmind/mapper/EmpMapper.xml

@@ -3,9 +3,14 @@
         PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         "https://mybatis.org/dtd/mybatis-3-mapper.dtd">
 <mapper namespace="com.inmind.mapper.EmpMapper">
+    <!--抽取Sql片段:给需要使用Emp查询的sql进行复用（include-refid）-->
+    <sql id="commonEmpSelect">
+        select id, username, password, name, gender, image, job, entrydate, dept_id, create_time, update_time from emp
+    </sql>
+
     <!--条件查询操作-->
     <select id="list" resultType="com.inmind.pojo.Emp">
-        select * from emp
+        <include refid="commonEmpSelect"></include>
         <where>
             <if test="name != null">
                 name like concat('%',#{name},'%')