mybatisFlex各種鏈?zhǔn)絪ql寫法小結(jié)

更新時間：2025年04月25日 11:40:24 作者：小吳先生666

本文主要介紹了mybatisFlex各種鏈?zhǔn)絪ql寫法,文中通過示例代碼介紹的非常詳細(xì),對大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價值,需要的朋友們下面隨著小編來一起學(xué)習(xí)學(xué)習(xí)吧

1.關(guān)聯(lián)LEFT JOIN

 public List<TocAgentUserRelationVO> selectTocAgentUserRelationByPhones(List<String> phones) {
        QueryWrapper queryWrapper = QueryWrapper.create()
                .select(TOC_AGENT_USER_RELATION.ALL_COLUMNS)
                .select(TOC_USER_INFO.PHONE,TOC_USER_INFO.NICK_NAME)
                .select(TOC_GROUP_PATIENT_RELATIONS.DOCTOR_ID,TOC_GROUP_PATIENT_RELATIONS.CREATE_TIME.as("bindDoctorTime"))
                .from(TOC_AGENT_USER_RELATION)
                .leftJoin(TOC_USER_INFO).on(TOC_USER_INFO.ID.eq(TOC_AGENT_USER_RELATION.USER_ID))
                .leftJoin(TOC_GROUP_PATIENT_RELATIONS).on(TOC_GROUP_PATIENT_RELATIONS.PATIENT_ID.eq(TOC_AGENT_USER_RELATION.USER_ID))
                .where(TOC_USER_INFO.PHONE.in(phones))
                .orderBy(TOC_AGENT_USER_RELATION.CREATE_TIME.desc());
        return tocAgentUserRelationMapper.selectListByQueryAs(queryWrapper,TocAgentUserRelationVO.class);
    }

2.FIND_IN_SET+LEFT JOIN+AND (OR)寫法

 public <R> Page<R> dietitianList(DietitianListRequest request, Class<R> asType) {
        QueryWrapper queryWrapper = QueryWrapper.create()
                .select(TOC_USER_INFO.ID,TOC_USER_INFO.NICK_NAME,TOC_USER_INFO.IMG_URL,TOC_USER_INFO.TAG,TOC_USER_INFO.GOOD_AT,TOC_USER_INFO.GOOD_AT_REMARK)
                .select(TOC_NUTRITIONIST_ORDER_NUM.CONSULT_ORDER_NUMBER)
                //計算好評率=好評數(shù)目/總訂單數(shù)目
                .select(TOC_NUTRITIONIST_ORDER_NUM.GOOD_REPUTATION_NUMBER.divide(TOC_NUTRITIONIST_ORDER_NUM.CONSULT_ORDER_NUMBER).as("goodRate"))
                .from(TOC_USER_INFO)
                .leftJoin(TOC_NUTRITIONIST_ORDER_NUM).on(TOC_NUTRITIONIST_ORDER_NUM.USER_ID.eq(TOC_USER_INFO.ID));
        queryWrapper.where(TOC_USER_INFO.PLATFORM.eq(3));
        queryWrapper.where(TOC_USER_INFO.USER_TYPE.eq(UserTypeEnum.TOC_DOCTOR));
        if(request.getIllnessId() != null){
            queryWrapper.and("FIND_IN_SET('" + request.getIllnessId() + "',good_at)");
        }

        if(request.getIllnessIds() != null && !request.getIllnessIds().isEmpty()){
            queryWrapper.and(q -> { for (Long illnessId : request.getIllnessIds()) { q.or("FIND_IN_SET('" + illnessId + "',good_at)"); } });

        }
        queryWrapper.orderBy("goodRate", false);
        PageDomain pageDomain = TableSupport.buildPageRequest();
        return tocUserInfoMapper.paginateAs(pageDomain.getPageNum(), pageDomain.getPageSize(), queryWrapper, asType);
    }

3.修改部分字段寫法

   public void updateReservePhone(NutritionistRequest request) {
        UpdateChain.of(TocUserInfo.class)
                .set(TocUserInfo::getReservePhone, request.getReservePhone())
                .where(TocUserInfo::getId).eq(request.getUserId())
                .update();
    }

4.sum+case_().when().then().else_().end()寫法

    public StatisticsReturnVo selectRegistrationCodeIncome(StatisticsRequest request) {
        QueryWrapper wrapper = QueryWrapper.create()
                .select(sum(case_().when(SYS_WX_PAY_ORDER.USER_FROM.eq(4)).then(SYS_WX_PAY_ORDER.PAY_MONEY).else_(0.00).end()).as("num1"))
                .select(sum(case_().when(SYS_WX_PAY_ORDER.USER_FROM.eq(5)).then(SYS_WX_PAY_ORDER.PAY_MONEY).else_(0.00).end()).as("num2"))
                .select(sum(case_().when(SYS_WX_PAY_ORDER.USER_FROM.eq(2)).then(SYS_WX_PAY_ORDER.PAY_MONEY).else_(0.00).end()).as("num3"))
                .from(SYS_WX_PAY_ORDER)
                .where(SYS_WX_PAY_ORDER.USER_FROM.in(2,4,5));
        wrapper.eq(SysWxPayOrder::getAgentUserId, request.getAgentId());
        wrapper.between(SysWxPayOrder::getCreateTime, request.getBeginTime(), request.getEndTime());
        wrapper.eq(SysWxPayOrder::getPayState,1);
        return sysWxPayOrderMapper.selectOneByQueryAs(wrapper, StatisticsReturnVo.class);
    }

4.count+case_().when().then().else_().end()寫法

public List<TocReserveTimeVo> getReserveTimeSlotRule(TocReserveQuery query) {
        QueryWrapper queryWrapper = QueryWrapper.create()
                .select(TOC_RESERVE_TIME_SLOT_RULE.ID.as("slotId"),
                        TOC_RESERVE_TIME_SLOT_RULE.TIME_SLOT,
                        TOC_RESERVE_TIME_SLOT_RULE.MAX_CAPACITY.as("totalAvailable"))
                .select(count(case_().when(TOC_RESERVE_DETAIL.STATUS.eq(1)).then(TOC_RESERVE_DETAIL.ID).else_(null).end()).as("reservedCount"))
                .select(TOC_RESERVE_TIME_SLOT_RULE.MAX_CAPACITY.subtract(count(TOC_RESERVE_DETAIL.ID)) .as("remainingSlots"))
                .from(TOC_RESERVE_TIME_SLOT_RULE)
                .leftJoin(TOC_RESERVE_DETAIL).on(TOC_RESERVE_DETAIL.SLOT_ID.eq(TOC_RESERVE_TIME_SLOT_RULE.ID))
                .where(TOC_RESERVE_TIME_SLOT_RULE.DATE_RULE_ID.eq(query.getId()))
                .groupBy(TOC_RESERVE_TIME_SLOT_RULE.ID, TOC_RESERVE_TIME_SLOT_RULE.TIME_SLOT, TOC_RESERVE_TIME_SLOT_RULE.MAX_CAPACITY);
        return tocReserveTimeSlotRuleMapper.selectListByQueryAs(queryWrapper,TocReserveTimeVo.class);
    }

5.字段加減乘除寫法

 public <R> Page<R> dietitianList(DietitianListRequest request, Class<R> asType) {
        QueryWrapper queryWrapper = QueryWrapper.create()
                .select(TOC_USER_INFO.ID,TOC_USER_INFO.NICK_NAME,TOC_USER_INFO.IMG_URL,TOC_USER_INFO.TAG,TOC_USER_INFO.GOOD_AT,TOC_USER_INFO.GOOD_AT_REMARK)
                .select(TOC_NUTRITIONIST_ORDER_NUM.CONSULT_ORDER_NUMBER)
                //計算好評率=好評數(shù)目/總訂單數(shù)目
                .select(TOC_NUTRITIONIST_ORDER_NUM.GOOD_REPUTATION_NUMBER.divide(TOC_NUTRITIONIST_ORDER_NUM.CONSULT_ORDER_NUMBER).as("goodRate1"))
                .select(TOC_NUTRITIONIST_ORDER_NUM.GOOD_REPUTATION_NUMBER.multiply(TOC_NUTRITIONIST_ORDER_NUM.CONSULT_ORDER_NUMBER).as("goodRate2"))
                .select(TOC_NUTRITIONIST_ORDER_NUM.GOOD_REPUTATION_NUMBER.subtract(TOC_NUTRITIONIST_ORDER_NUM.CONSULT_ORDER_NUMBER).as("goodRate3"))
                .select(TOC_NUTRITIONIST_ORDER_NUM.GOOD_REPUTATION_NUMBER.add(TOC_NUTRITIONIST_ORDER_NUM.CONSULT_ORDER_NUMBER).as("goodRate4"))
                .from(TOC_USER_INFO)
                .leftJoin(TOC_NUTRITIONIST_ORDER_NUM).on(TOC_NUTRITIONIST_ORDER_NUM.USER_ID.eq(TOC_USER_INFO.ID));
        queryWrapper.where(TOC_USER_INFO.PLATFORM.eq(3));
        queryWrapper.where(TOC_USER_INFO.USER_TYPE.eq(UserTypeEnum.TOC_DOCTOR));
        PageDomain pageDomain = TableSupport.buildPageRequest();
        return tocUserInfoMapper.paginateAs(pageDomain.getPageNum(), pageDomain.getPageSize(), queryWrapper, asType);
    }

6. AND +(字段 or 字段寫法)

  public <R> Page<R> dietitianList(DietitianListRequest request, Class<R> asType) {
        QueryWrapper queryWrapper = QueryWrapper.create()
                .select(TOC_USER_INFO.ID,TOC_USER_INFO.NICK_NAME,TOC_USER_INFO.IMG_URL,TOC_USER_INFO.TAG,TOC_USER_INFO.GOOD_AT,TOC_USER_INFO.GOOD_AT_REMARK)
                .select(TOC_NUTRITIONIST_ORDER_NUM.CONSULT_ORDER_NUMBER)
                //計算好評率=好評數(shù)目/總訂單數(shù)目
                .select(TOC_NUTRITIONIST_ORDER_NUM.GOOD_REPUTATION_NUMBER.divide(TOC_NUTRITIONIST_ORDER_NUM.CONSULT_ORDER_NUMBER).as("goodRate"))
                .from(TOC_USER_INFO)
                .leftJoin(TOC_NUTRITIONIST_ORDER_NUM).on(TOC_NUTRITIONIST_ORDER_NUM.USER_ID.eq(TOC_USER_INFO.ID));
        queryWrapper.and(TOC_NUTRITIONIST_ORDER_NUM.GOOD_REPUTATION_NUMBER.eq(1).or(TOC_NUTRITIONIST_ORDER_NUM.GOOD_REPUTATION_NUMBER.gt(1)));

        
        PageDomain pageDomain = TableSupport.buildPageRequest();
        return tocUserInfoMapper.paginateAs(pageDomain.getPageNum(), pageDomain.getPageSize(), queryWrapper, asType);
    }

7.批量修改寫法

  public int batchUntieGroup(List<Long> relationIds) {
        //每次執(zhí)行1000條
        Db.executeBatch(relationIds, 1000, TocGroupPatientRelationsMapper.class
                , (mapper, relationId) -> {
                    //下面是具體的執(zhí)行sql寫法
                    UpdateChain.of(mapper)
                            .set(TocGroupPatientRelations::getGroupId, null)
                            .set(TocGroupPatientRelations::getGroupName, "")
                            .where(TocGroupPatientRelations::getRelationId).eq(relationId)
                            .update();
                });
        return Constants.SUCCESS_CODE;
    }

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