TPCH 表学习

TPCH 里的表格对一个配件销售管理系统进行建模。细节参考 TPCH Specification
TPCH 的 Query 定义参考 Specification 的 2.4 节，里面详细说明了每个 Query 的内涵。本文过一遍表定义，记住这些表的意思，有利于理解 Query。

suplier

供应商信息：key + 姓名、地址、电话、国家代码
其中国家代码需要和 nation 表做 join 以获得详细国家信息。

CREATE TABLE `supplier` (
  `s_suppkey` bigint(20) NOT NULL,
  `s_name` char(25) DEFAULT NULL,
  `s_address` varchar(40) DEFAULT NULL,
  `s_nationkey` bigint(20) DEFAULT NULL,
  `s_phone` char(15) DEFAULT NULL,
  `s_acctbal` bigint(20) DEFAULT NULL,
  `s_comment` varchar(101) DEFAULT NULL,
  PRIMARY KEY (`s_suppkey`)
) partition by hash(s_suppkey) partitions 128

nation

国家信息：key + 国家名、地区代号
其中地区代号需要和 region 表做 join 以获得地区详细信息

CREATE TABLE `nation` (
  `n_nationkey` bigint(20) NOT NULL,
  `n_name` char(25) DEFAULT NULL,
  `n_regionkey` bigint(20) DEFAULT NULL,
  `n_comment` varchar(152) DEFAULT NULL,
  PRIMARY KEY (`n_nationkey`)
) 

region

地区信息：key + 地区名

CREATE TABLE `region` (
  `r_regionkey` bigint(20) NOT NULL,
  `r_name` char(25) DEFAULT NULL,
  `r_comment` varchar(152) DEFAULT NULL,
  PRIMARY KEY (`r_regionkey`)
)

customer

用户表：key + 姓名、地址、国家代号、电话等
用户表按照 key 做 64 个 hash 分区

CREATE TABLE `customer` (
  `c_custkey` bigint(20) NOT NULL,
  `c_name` varchar(25) DEFAULT NULL,
  `c_address` varchar(40) DEFAULT NULL,
  `c_nationkey` bigint(20) DEFAULT NULL,
  `c_phone` char(15) DEFAULT NULL,
  `c_acctbal` decimal(10,2) DEFAULT NULL,
  `c_mktsegment` char(10) DEFAULT NULL,
  `c_comment` varchar(117) DEFAULT NULL,
  PRIMARY KEY (`c_custkey`),
  UNIQUE KEY `i_c_custkey` (`c_custkey`) LOCAL  BLOCK_SIZE 16384
) partition by hash(c_custkey) partitions 64

part

配件表：key + 配件名、厂商、品牌、类型、大小、包装、零售价

CREATE TABLE `part` (
  `p_partkey` bigint(20) NOT NULL,
  `p_name` varchar(55) DEFAULT NULL,
  `p_mfgr` char(25) DEFAULT NULL,
  `p_brand` char(10) DEFAULT NULL,
  `p_type` varchar(25) DEFAULT NULL,
  `p_size` bigint(20) DEFAULT NULL,
  `p_container` char(10) DEFAULT NULL,
  `p_retailprice` decimal(10,2) DEFAULT NULL,
  `p_comment` varchar(23) DEFAULT NULL,
  PRIMARY KEY (`p_partkey`)
)  partition by hash(p_partkey) partitions 64;

partsupp

配件供应表：配件key + 供应商key + 供应数量、批发价

CREATE TABLE `partsupp` (
  `ps_partkey` bigint(20) NOT NULL,
  `ps_suppkey` bigint(20) NOT NULL,
  `ps_availqty` bigint(20) DEFAULT NULL,
  `ps_supplycost` decimal(10,2) DEFAULT NULL,
  `ps_comment` varchar(199) DEFAULT NULL,
  PRIMARY KEY (`ps_partkey`, `ps_suppkey`),
  UNIQUE KEY `ps_pkey_skey` (`ps_partkey`, `ps_suppkey`) LOCAL  BLOCK_SIZE 16384
)  partition by hash(ps_partkey) partitions 64

orders

零售订单表：订单key + 客户key + 订单状态、订单总价、下单日期、优先级、收银员、发货优先级

CREATE TABLE `orders` (
  `o_orderkey` bigint(20) NOT NULL,
  `o_custkey` bigint(20) NOT NULL,
  `o_orderstatus` char(1) DEFAULT NULL,
  `o_totalprice` decimal(10,2) DEFAULT NULL,
  `o_orderdate` date NOT NULL,
  `o_orderpriority` char(15) DEFAULT NULL,
  `o_clerk` char(15) DEFAULT NULL,
  `o_shippriority` bigint(20) DEFAULT NULL,
  `o_comment` varchar(79) DEFAULT NULL,
  PRIMARY KEY (`o_orderkey`, `o_orderdate`, `o_custkey`),
  KEY `o_orderkey` (`o_orderkey`) LOCAL  BLOCK_SIZE 16384
)  partition by range columns(o_orderdate)
   subpartition by hash(o_custkey) subpartitions 64
(partition ord1 values less than ('1992-01-01'),
partition ord2 values less than ('1992-02-01'),
partition ord3 values less than ('1992-03-01'),
...
...
partition ord77 values less than ('1998-05-01'),
partition ord78 values less than ('1998-06-01'),
partition ord79 values less than ('1998-07-01'),
partition ord80 values less than ('1998-08-01'),
partition ord81 values less than (MAXVALUE))

lineitem

订单明细表：订单key + 配件key + 供应商key + 流水号、数量、价格、折扣、税、明细状态、发货日期、预计到达日期、实际到达日期、运单处理策略（原返？拒收退回？等）、运输途径（火车、汽运、邮寄等）

CREATE TABLE `lineitem` (
  `l_orderkey` bigint(20) NOT NULL,
  `l_partkey` bigint(20) NOT NULL,
  `l_suppkey` bigint(20) NOT NULL,
  `l_linenumber` bigint(20) NOT NULL,
  `l_quantity` bigint(20) NOT NULL,
  `l_extendedprice` decimal(10,2) NOT NULL,
  `l_discount` decimal(10,2) NOT NULL,
  `l_tax` decimal(10,2) NOT NULL,
  `l_returnflag` char(1) DEFAULT NULL,
  `l_linestatus` char(1) DEFAULT NULL,
  `l_shipdate` date NOT NULL,
  `l_commitdate` date DEFAULT NULL,
  `l_receiptdate` date DEFAULT NULL,
  `l_shipinstruct` char(25) DEFAULT NULL,
  `l_shipmode` char(10) DEFAULT NULL,
  `l_comment` varchar(44) DEFAULT NULL,
  PRIMARY KEY (`l_orderkey`, `l_linenumber`, `l_shipdate`, `l_partkey`),
  KEY `i_l_orderkey` (`l_orderkey`) LOCAL  BLOCK_SIZE 16384
) partition by range columns(l_shipdate)
  subpartition by hash(l_partkey) subpartitions 64
(partition item1 values less than ('1992-01-01'),
partition item2 values less than ('1992-02-01'),
partition item3 values less than ('1992-03-01'),
partition item4 values less than ('1992-04-01'),
...
...
partition item81 values less than ('1998-09-01'),
partition item82 values less than ('1998-10-01'),
partition item83 values less than ('1998-11-01'),
partition item84 values less than (MAXVALUE)) 

总体上看，围绕销售数据可以做各种进销存查询，围绕客户数据，可以做各种销售分析。更多 BI 相关内容，参考 http://www.tpc.org/tpc_documents_current_versions/pdf/tpc-h_v2.17.3.pdf