zsjz-ai/src/main/resources/mappers/trans/TransFrequencyMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.qingjian.module.trans.mapper.TransFrequencyMapper">

    <!--
        统计首次交易频率信息
        功能：按交易对手（姓名、卡号）分组，统计每组的：
        - 最早和最晚交易日期
        - 交易总次数
        - 交易总金额
        筛选条件：交易次数大于指定阈值
        排序：按交易次数降序排列
    -->
    <select id="statFirstTransFrequency" resultType="com.qingjian.common.model.trans.dto.TransFrequencyDTO">
        SELECT
        personName,
        COALESCE(otherName, '未知对手') as otherName,
        COALESCE(otherCardNo, '未知对手卡号') as otherCardNo,
        MIN(transDate) as startTransDate,
        MAX(transDate) as endTransDate,
        COUNT(*) AS transCount ,
        SUM(transAmount) AS transTotalAmount
        FROM ${query.tableName}
        <where>
            <if test="query.personNames != null and query.personNames.size > 0">
                AND personName IN
                <foreach collection="query.personNames" item="name" open="(" separator="," close=")">
                    #{name}
                </foreach>
            </if>
            <if test="query.otherName != null and query.otherName != ''">
                <choose>
                    <when test="query.otherName == '未知对手'">
                        and otherName IS NULL
                    </when>
                    <otherwise>
                        and otherName = #{query.otherName}
                    </otherwise>
                </choose>
            </if>
            <if test="query.otherCardNo != null and query.otherCardNo != ''">
                <choose>
                    <when test="query.otherCardNo == '未知对手卡号'">
                        AND otherCardNo IS NULL
                    </when>
                    <otherwise>
                        AND otherCardNo = #{query.otherCardNo}
                    </otherwise>
                </choose>
            </if>
            <if test="query.startDate != null">
                and transDate >= #{query.startDate}
            </if>
            <if test="query.endDate != null">
                and transDate &lt;= #{query.endDate}
            </if>
        </where>
        GROUP BY ALL
        <if test="query.transCount != null">
            HAVING transCount ${query.transCountSymbol} #{query.transCount}
        </if>
        <if test="query.orderKey != null and query.orderKey != ''">
            ORDER BY ${query.orderKey} ${query.sort}
        </if>
    </select>
    

</mapper>