Mybatis 中 Oracle 的拼接模糊查询及用法详解

 SELECT A.USER_ID,
      A.USER_NAME
    FROM USER A
      AND A.USER_NAME like concat(concat('%','w'),'%')
      或者
      AND A.USER_NAME like '%' || 'w' || '%'

 <select id="selectByName" resultMap="BaseResultMap">
    SELECT A.USER_ID,
      A.USER_NAME
    FROM T_BASE_USER_INFO A
      <if test="userName != null">
        AND A.USER_NAME like '%' || #{userName} || '%'
      </if>
      或者
      <if test="userName != null">
        AND A.USER_NAME like concat(concat('%','${userName}'),'%')
      </if>
  </select>

 <if test="_parameter != null">
--         AND A.USER_NAME like CONCAT('%','#{userName}','%')
          AND A.USER_NAME = #{userName}
        </if>
<!--        <if test="userType != null">
          AND A.USER_TYPE = #{userType}
        </if>
        <if test="mobilePhoneNo != null">
          AND A.MOBILE_PHONE_NO like CONCAT('%','#{mobilePhoneNo}','%')
        </if>
        <if test="roleId != null">
          AND B.ROLE_ID = #{roleId}
                </if>-->

 <if test="userName != null">
        AND A.USER_NAME like '%' || #{userName} || '%'
      </if>

 <if test="userName != null">
        AND A.USER_NAME like concat(concat('%','${userName}'),'%')
      </if>
      <if test="userType != null">
        AND A.USER_TYPE = #{userType}
      </if>
      <if test="mobilePhoneNo != null">
        AND A.MOBILE_PHONE_NO like '%' || #{mobilePhoneNo} || '%'
      </if>
      <if test="baseRoleInfo.roleId != null">
        AND B.ROLE_ID = #{baseRoleInfo.roleId}
      </if>