# TPCH Schema

```sql
-- tpch benchmark version 8.0
create database tpch;
use tpch;
create table nation  ( n_nationkey  integer not null,
                            n_name       char(25) not null,
                            n_regionkey  integer not null,
                            n_comment    varchar(152));
                            
create table region  ( r_regionkey  integer not null,
                            r_name       char(25) not null,
                            r_comment    varchar(152));
                            
create table part  ( p_partkey     integer not null,
                          p_name        varchar(55) not null,
                          p_mfgr        char(25) not null,
                          p_brand       char(10) not null,
                          p_type        varchar(25) not null,
                          p_size        integer not null,
                          p_container   char(10) not null,
                          p_retailprice decimal(15,2) not null,
                          p_comment     varchar(23) not null );
                          
create table supplier  ( s_suppkey     integer not null,
                             s_name        char(25) not null,
                             s_address     varchar(40) not null,
                             s_nationkey   integer not null,
                             s_phone       char(15) not null,
                             s_acctbal     decimal(15,2) not null,
                             s_comment     varchar(101) not null);
                             
create table partsupp  ( ps_partkey     integer not null,
                             ps_suppkey     integer not null,
                             ps_availqty    integer not null,
                             ps_supplycost  decimal(15,2)  not null,
                             ps_comment     varchar(199) not null );
                             
create table customer  ( c_custkey     integer not null,
                             c_name        varchar(25) not null,
                             c_address     varchar(40) not null,
                             c_nationkey   integer not null,
                             c_phone       char(15) not null,
                             c_acctbal     decimal(15,2)   not null,
                             c_mktsegment  char(10) not null,
                             c_comment     varchar(117) not null);
                             
create table orders  ( o_orderkey       integer not null,
                           o_custkey        integer not null,
                           o_orderstatus    char(1) not null,
                           o_totalprice     decimal(15,2) not null,
                           o_orderdate      date not null,
                           o_orderpriority  char(15) not null,  
                           o_clerk          char(15) not null, 
                           o_shippriority   integer not null,
                           o_comment        varchar(79) not null);
create table lineitem ( l_orderkey    integer not null,
                             l_partkey     integer not null,
                             l_suppkey     integer not null,
                             l_linenumber  integer not null,
                             l_quantity    decimal(15,2) not null,
                             l_extendedprice  decimal(15,2) not null,
                             l_discount    decimal(15,2) not null,
                             l_tax         decimal(15,2) not null,
                             l_returnflag  char(1) not null,
                             l_linestatus  char(1) not null,
                             l_shipdate    date not null,
                             l_commitdate  date not null,
                             l_receiptdate date not null,
                             l_shipinstruct char(25) not null,
                             l_shipmode     char(10) not null,
                             l_comment      varchar(44) not null);

-- for table region
alter table tpch.region
add primary key (r_regionkey);

-- for table nation
alter table tpch.nation
add primary key (n_nationkey);

alter table tpch.nation
add foreign key nation_fk1 (n_regionkey) references tpch.region(r_regionkey);

-- for table part
alter table tpch.part
add primary key (p_partkey);

-- for table supplier
alter table tpch.supplier
add primary key (s_suppkey);

alter table tpch.supplier
add foreign key supplier_fk1 (s_nationkey) references tpch.nation(n_nationkey);

-- for table partsupp
alter table tpch.partsupp
add primary key (ps_partkey,ps_suppkey);

-- for table customer
alter table tpch.customer
add primary key (c_custkey);
alter table tpch.customer
add foreign key customer_fk1 (c_nationkey) references tpch.nation(n_nationkey);

-- for table lineitem
alter table tpch.lineitem
add primary key (l_orderkey,l_linenumber);

-- for table orders
alter table tpch.orders
add primary key (o_orderkey);

-- for table partsupp
alter table tpch.partsupp
add foreign key partsupp_fk1 (ps_suppkey) references tpch.supplier(s_suppkey);

alter table tpch.partsupp
add foreign key partsupp_fk2 (ps_partkey) references tpch.part(p_partkey);

-- for table orders
alter table tpch.orders
add foreign key orders_fk1 (o_custkey) references tpch.customer(c_custkey);

-- for table lineitem
alter table tpch.lineitem
add foreign key lineitem_fk1 (l_orderkey)  references tpch.orders(o_orderkey);

alter table tpch.lineitem
add foreign key lineitem_fk2 (l_partkey,l_suppkey) references 
        tpch.partsupp(ps_partkey, ps_suppkey);

```


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