离线数仓DIM层

8.1 商品维度表

1）建表语句

DROP TABLE IF EXISTS dim_sku_full;
CREATE EXTERNAL TABLE dim_sku_full
(
    `id`                   STRING COMMENT 'sku_id',
    `price`                DECIMAL(16, 2) COMMENT '商品价格',
    `sku_name`             STRING COMMENT '商品名称',
    `sku_desc`             STRING COMMENT '商品描述',
    `weight`               DECIMAL(16, 2) COMMENT '重量',
    `is_sale`              BOOLEAN COMMENT '是否在售',
    `spu_id`               STRING COMMENT 'spu编号',
    `spu_name`             STRING COMMENT 'spu名称',
    `category3_id`         STRING COMMENT '三级分类id',
    `category3_name`       STRING COMMENT '三级分类名称',
    `category2_id`         STRING COMMENT '二级分类id',
    `category2_name`       STRING COMMENT '二级分类名称',
    `category1_id`         STRING COMMENT '一级分类id',
    `category1_name`       STRING COMMENT '一级分类名称',
    `tm_id`                STRING COMMENT '品牌id',
    `tm_name`              STRING COMMENT '品牌名称',
    `sku_attr_values`      ARRAY<STRUCT<attr_id :STRING,value_id :STRING,attr_name :STRING,value_name:STRING>> COMMENT '平台属性',
    `sku_sale_attr_values` ARRAY<STRUCT<sale_attr_id :STRING,sale_attr_value_id :STRING,sale_attr_name :STRING,sale_attr_value_name:STRING>> COMMENT '销售属性',
    `create_time`          STRING COMMENT '创建时间'
) COMMENT '商品维度表'
    PARTITIONED BY (`dt` STRING)
    STORED AS ORC
    LOCATION '/warehouse/gmall/dim/dim_sku_full/'
    TBLPROPERTIES ('orc.compress' = 'snappy');

2）数据装载

with
sku as
(
    select
        id,
        price,
        sku_name,
        sku_desc,
        weight,
        is_sale,
        spu_id,
        category3_id,
        tm_id,
        create_time
    from ods_sku_info_full
    where dt='2020-06-14'
),
spu as
(
    select
        id,
        spu_name
    from ods_spu_info_full
    where dt='2020-06-14'
),
c3 as
(
    select
        id,
        name,
        category2_id
    from ods_base_category3_full
    where dt='2020-06-14'
),
c2 as
(
    select
        id,
        name,
        category1_id
    from ods_base_category2_full
    where dt='2020-06-14'
),
c1 as
(
    select
        id,
        name
    from ods_base_category1_full
    where dt='2020-06-14'
),
tm as
(
    select
        id,
        tm_name
    from ods_base_trademark_full
    where dt='2020-06-14'
),
attr as
(
    select
        sku_id,
        collect_set(named_struct('attr_id',attr_id,'value_id',value_id,'attr_name',attr_name,'value_name',value_name)) attrs
    from ods_sku_attr_value_full
    where dt='2020-06-14'
    group by sku_id
),
sale_attr as
(
    select
        sku_id,
        collect_set(named_struct('sale_attr_id',sale_attr_id,'sale_attr_value_id',sale_attr_value_id,'sale_attr_name',sale_attr_name,'sale_attr_value_name',sale_attr_value_name)) sale_attrs
    from ods_sku_sale_attr_value_full
    where dt='2020-06-14'
    group by sku_id
)
insert overwrite table dim_sku_full partition(dt='2020-06-14')
select
    sku.id,
    sku.price,
    sku.sku_name,
    sku.sku_desc,
    sku.weight,
    sku.is_sale,
    sku.spu_id,
    spu.spu_name,
    sku.category3_id,
    c3.name,
    c3.category2_id,
    c2.name,
    c2.category1_id,
    c1.name,
    sku.tm_id,
    tm.tm_name,
    attr.attrs,
    sale_attr.sale_attrs,
    sku.create_time
from sku
left join spu on sku.spu_id=spu.id
left join c3 on sku.category3_id=c3.id
left join c2 on c3.category2_id=c2.id
left join c1 on c2.category1_id=c1.id
left join tm on sku.tm_id=tm.id
left join attr on sku.id=attr.sku_id
left join sale_attr on sku.id=sale_attr.sku_id;

8.1 商品维度表

1）建表语句

DROP TABLE IF EXISTS dim_coupon_full;
CREATE EXTERNAL TABLE dim_coupon_full
(
    `id`               STRING COMMENT '购物券编号',
    `coupon_name`      STRING COMMENT '购物券名称',
    `coupon_type_code` STRING COMMENT '购物券类型编码',
    `coupon_type_name` STRING COMMENT '购物券类型名称',
    `condition_amount` DECIMAL(16, 2) COMMENT '满额数',
    `condition_num`    BIGINT COMMENT '满件数',
    `activity_id`      STRING COMMENT '活动编号',
    `benefit_amount`   DECIMAL(16, 2) COMMENT '减金额',
    `benefit_discount` DECIMAL(16, 2) COMMENT '折扣',
    `benefit_rule`     STRING COMMENT '优惠规则:满元*减*元，满*件打*折',
    `create_time`      STRING COMMENT '创建时间',
    `range_type_code`  STRING COMMENT '优惠范围类型编码',
    `range_type_name`  STRING COMMENT '优惠范围类型名称',
    `limit_num`        BIGINT COMMENT '最多领取次数',
    `taken_count`      BIGINT COMMENT '已领取次数',
    `start_time`       STRING COMMENT '可以领取的开始日期',
    `end_time`         STRING COMMENT '可以领取的结束日期',
    `operate_time`     STRING COMMENT '修改时间',
    `expire_time`      STRING COMMENT '过期时间'
) COMMENT '优惠券维度表'
    PARTITIONED BY (`dt` STRING)
    STORED AS ORC
    LOCATION '/warehouse/gmall/dim/dim_coupon_full/'
    TBLPROPERTIES ('orc.compress' = 'snappy');

2）数据装载

insert overwrite table dim_coupon_full partition(dt='2020-06-14')
select
    id,
    coupon_name,
    coupon_type,
    coupon_dic.dic_name,
    condition_amount,
    condition_num,
    activity_id,
    benefit_amount,
    benefit_discount,
    case coupon_type
        when '3201' then concat('满',condition_amount,'元减',benefit_amount,'元')
        when '3202' then concat('满',condition_num,'件打',10*(1-benefit_discount),'折')
        when '3203' then concat('减',benefit_amount,'元')
    end benefit_rule,
    create_time,
    range_type,
    range_dic.dic_name,
    limit_num,
    taken_count,
    start_time,
    end_time,
    operate_time,
    expire_time
from
(
    select
        id