Início rápido de consulta - Hologres: Central de Documentação do Alibaba Cloud

Este tópico descreve como consultar dados em tabelas internas ou por meio de foreign tables no Hologres. O objetivo é permitir que você experimente o desempenho superior das consultas de dados no Hologres.

Pré-requisitos

Adquira uma instância do Hologres. Para mais informações, consulte Adquirir uma instância do Hologres.
Conceda as permissões necessárias ao usuário RAM que executará as operações. Para mais informações, consulte Conceder permissões a um usuário RAM.

Informações de fundo

O Hologres responde rapidamente às solicitações de consulta de dados. Este tópico explica como criar um banco de dados, definir foreign tables e tabelas internas e importar dados para as tabelas internas no Hologres. Além disso, aborda como consultar dados diretamente nas tabelas internas ou utilizando foreign tables, permitindo que você vivencie a alta performance das consultas no Hologres.

Procedimento

Criar um banco de dados

Esta etapa mostra como criar um banco de dados no Hologres. Use esse banco de dados para armazenar os dados da sua instância do Hologres para consultas futuras.
Criar tabelas
No banco de dados criado, crie uma tabela para armazenar dados de exemplo. As tabelas dividem-se em duas categorias:
- Foreign tables mapeiam campos de fontes de dados externas e não armazenam dados no Hologres.
- Tabelas internas servem para armazenar dados dentro do Hologres.
Importar dados de exemplo

Nesta etapa, você aprenderá a importar dados para tabelas internas no Hologres visando consultas posteriores. Neste exemplo, utilizamos dados dos conjuntos TPC Benchmark H (TPC-H).
Consultar dados nas tabelas

Aqui demonstramos como executar consultas nas tabelas. Utilizamos as 22 instruções SQL do TPC-H como exemplo, o que permite avaliar a rapidez e a estabilidade das consultas de dados no Hologres.

Etapa 1: Criar um banco de dados

Faça login no console do Hologres. No painel de navegação à esquerda, clique em Instances.
Na página Instances, clique no nome da instância desejada.
No painel de navegação à esquerda da página Instance Details, clique em Database Management.
Na página DB Authorization, clique em Create Database no canto superior direito.

Na caixa de diálogo Create Database, configure os seguintes parâmetros.

新增数据库

Parâmetro	Descrição
Instance Name	Nome da instância do Hologres onde você deseja criar o banco de dados. Por padrão, o sistema exibe o nome da instância conectada. Também é possível selecionar outra instância do Hologres na lista suspensa.
Database Name	Nome do banco de dados. Neste exemplo, usamos tpch_10g. Nota O nome do banco de dados deve ser exclusivo.
Permission Model	Selecione uma política de acesso para o banco de dados criado. Para mais detalhes sobre políticas de acesso, consulte: SPM: modelo de permissão simples (SPM). Ao escolher SPM, as permissões são concedidas no nível do banco de dados. As funções disponíveis incluem admin, developer, writer e viewer. Esse modelo facilita o gerenciamento seguro de permissões em objetos do banco de dados por meio de poucas funções de gestão. SLPM: modelo de permissão no nível de schema (SLPM). Com o SLPM, as permissões são atribuídas no nível do schema. As funções oferecidas são <db>.admin, <db>.<schema>.developer, <db>.<schema>.writer e <db>.<schema>.viewer. Em comparação ao SPM, o SLPM proporciona um controle de permissões mais granular. modelo de autorização padrão do PostgreSQL: o Hologres é compatível com o PostgreSQL e utiliza seu sistema de permissões nativo.

Etapa 2: Criar tabelas

Após criar o banco de dados, defina as tabelas necessárias. Escolha entre foreign tables ou tabelas internas dependendo do local onde seus dados estão armazenados.

Criar uma foreign table
1. Conecte-se ao banco de dados.
  1. Na página de desenvolvimento do HoloWeb, clique em Metadata Management.
  2. Na página Metadata Management, clique duas vezes no nome do banco de dados criado na árvore de diretórios à esquerda e, em seguida, clique em OK.
2. Crie as foreign tables.
  1. Na página SQL Editor, clique no ícone no canto superior esquerdo.
  2. Na nova página Ad-hoc Query, selecione o Instance Name e o Database desejados. Depois, insira as instruções abaixo no editor SQL e clique em Run.
    
    As instruções SQL a seguir criam foreign tables para consultas futuras. Essas tabelas mapeiam campos das tabelas source, como odps_customer_10g e odps_lineitem_10g, localizadas no projeto MaxCompute MAXCOMPUTE_PUBLIC_DATA.
```
DROP FOREIGN TABLE IF EXISTS odps_customer_10g;
DROP FOREIGN TABLE IF EXISTS odps_lineitem_10g;
DROP FOREIGN TABLE IF EXISTS odps_nation_10g;
DROP FOREIGN TABLE IF EXISTS odps_orders_10g;
DROP FOREIGN TABLE IF EXISTS odps_part_10g;
DROP FOREIGN TABLE IF EXISTS odps_partsupp_10g;
DROP FOREIGN TABLE IF EXISTS odps_region_10g;
DROP FOREIGN TABLE IF EXISTS odps_supplier_10g;

IMPORT FOREIGN SCHEMA "MAXCOMPUTE_PUBLIC_DATA#default" LIMIT to
(
    odps_customer_10g,
    odps_lineitem_10g,
    odps_nation_10g,
    odps_orders_10g,
    odps_part_10g,
    odps_partsupp_10g,
    odps_region_10g,
    odps_supplier_10g
) 
FROM SERVER odps_server INTO public OPTIONS(if_table_exist'error',if_unsupported_type'error');
```

Criar tabelas internas

Conecte-se ao banco de dados.
1. Na página de desenvolvimento do HoloWeb, clique em Metadata Management.
2. Na página Metadata Management, clique duas vezes no nome do banco de dados criado na árvore de diretórios à esquerda e, em seguida, clique em OK.

Crie as tabelas internas.

Na página SQL Editor, clique em New SQL Window no canto superior esquerdo.

Na nova página Ad-hoc Query, selecione o Instance Name e o Database criados anteriormente. Em seguida, insira as instruções abaixo no editor SQL e clique em Run.

Os comandos SQL seguintes criam as tabelas internas LINEITEM, ORDERS, PARTSUPP, PART, CUSTOMER, SUPPLIER, NATION e REGION. Essas tabelas armazenarão os dados para consultas posteriores.

DROP TABLE IF EXISTS LINEITEM;

BEGIN;
CREATE TABLE LINEITEM (
    L_ORDERKEY bigint NOT NULL,
    L_PARTKEY int NOT NULL,
    L_SUPPKEY int NOT NULL,
    L_LINENUMBER int 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 text NOT NULL,
    L_LINESTATUS text NOT NULL,
    L_SHIPDATE date NOT NULL,
    L_COMMITDATE date NOT NULL,
    L_RECEIPTDATE date NOT NULL,
    L_SHIPINSTRUCT text NOT NULL,
    L_SHIPMODE text NOT NULL,
    L_COMMENT text NOT NULL,
    PRIMARY KEY (L_ORDERKEY, L_LINENUMBER)
);
CALL set_table_property ('LINEITEM', 'clustering_key', 'L_SHIPDATE,L_ORDERKEY');
CALL set_table_property ('LINEITEM', 'segment_key', 'L_SHIPDATE');
CALL set_table_property ('LINEITEM', 'distribution_key', 'L_ORDERKEY');
CALL set_table_property ('LINEITEM', 'bitmap_columns', 'L_RETURNFLAG,L_LINESTATUS,L_SHIPINSTRUCT,L_SHIPMODE');
CALL set_table_property ('LINEITEM', 'dictionary_encoding_columns', 'l_comment:off,l_returnflag,l_linestatus,l_shipinstruct,l_shipmode');
COMMIT;

DROP TABLE IF EXISTS ORDERS;

BEGIN;
CREATE TABLE ORDERS (
    O_ORDERKEY bigint NOT NULL PRIMARY KEY,
    O_CUSTKEY int NOT NULL,
    O_ORDERSTATUS text NOT NULL,
    O_TOTALPRICE DECIMAL(15, 2) NOT NULL,
    O_ORDERDATE date NOT NULL,
    O_ORDERPRIORITY text NOT NULL,
    O_CLERK text NOT NULL,
    O_SHIPPRIORITY int NOT NULL,
    O_COMMENT text NOT NULL
);
CALL set_table_property ('ORDERS', 'segment_key', 'O_ORDERDATE');
CALL set_table_property ('ORDERS', 'colocate_with', 'lineitem');
CALL set_table_property ('ORDERS', 'distribution_key', 'O_ORDERKEY');
CALL set_table_property ('ORDERS', 'bitmap_columns', 'O_ORDERSTATUS,O_ORDERPRIORITY,O_CLERK,O_SHIPPRIORITY');
CALL set_table_property ('ORDERS', 'dictionary_encoding_columns', 'o_comment:off,o_orderstatus,o_orderpriority,o_clerk');
COMMIT;

DROP TABLE IF EXISTS PARTSUPP;

BEGIN;
CREATE TABLE PARTSUPP (
    PS_PARTKEY int NOT NULL,
    PS_SUPPKEY int NOT NULL,
    PS_AVAILQTY int NOT NULL,
    PS_SUPPLYCOST DECIMAL(15, 2) NOT NULL,
    PS_COMMENT text NOT NULL,
    PRIMARY KEY (PS_PARTKEY, PS_SUPPKEY)
);
CALL set_table_property ('PARTSUPP', 'distribution_key', 'PS_PARTKEY');
CALL set_table_property ('PARTSUPP', 'colocate_with', 'lineitem');
CALL set_table_property ('PARTSUPP', 'bitmap_columns', 'ps_availqty');
CALL set_table_property ('PARTSUPP', 'dictionary_encoding_columns', '');
COMMIT;

DROP TABLE IF EXISTS PART;

BEGIN;
CREATE TABLE PART (
    P_PARTKEY int NOT NULL PRIMARY KEY,
    P_NAME text NOT NULL,
    P_MFGR text NOT NULL,
    P_BRAND text NOT NULL,
    P_TYPE text NOT NULL,
    P_SIZE int NOT NULL,
    P_CONTAINER text NOT NULL,
    P_RETAILPRICE DECIMAL(15, 2) NOT NULL,
    P_COMMENT text NOT NULL
);
CALL set_table_property ('PART', 'distribution_key', 'P_PARTKEY');
CALL set_table_property ('PART', 'colocate_with', 'lineitem');
CALL set_table_property ('PART', 'bitmap_columns', 'P_SIZE,P_MFGR,P_BRAND,P_TYPE,P_CONTAINER');
CALL set_table_property ('PART', 'dictionary_encoding_columns', 'p_name:off,p_comment:off,p_mfgr,p_brand,p_type,p_container');
COMMIT;

DROP TABLE IF EXISTS CUSTOMER;

BEGIN;
CREATE TABLE CUSTOMER (
    C_CUSTKEY int NOT NULL PRIMARY KEY,
    C_NAME text NOT NULL,
    C_ADDRESS text NOT NULL,
    C_NATIONKEY int NOT NULL,
    C_PHONE text NOT NULL,
    C_ACCTBAL DECIMAL(15, 2) NOT NULL,
    C_MKTSEGMENT text NOT NULL,
    C_COMMENT text NOT NULL
);
CALL set_table_property ('CUSTOMER', 'distribution_key', 'C_CUSTKEY');
CALL set_table_property ('CUSTOMER', 'colocate_with', 'lineitem');
CALL set_table_property ('CUSTOMER', 'bitmap_columns', 'C_NATIONKEY,C_MKTSEGMENT');
CALL set_table_property ('CUSTOMER', 'dictionary_encoding_columns', 'c_name:off,c_address:off,c_phone:off,c_comment:off,c_mktsegment');
COMMIT;

DROP TABLE IF EXISTS SUPPLIER;

BEGIN;
CREATE TABLE SUPPLIER (
    S_SUPPKEY int NOT NULL PRIMARY KEY,
    S_NAME text NOT NULL,
    S_ADDRESS text NOT NULL,
    S_NATIONKEY int NOT NULL,
    S_PHONE text NOT NULL,
    S_ACCTBAL DECIMAL(15, 2) NOT NULL,
    S_COMMENT text NOT NULL
);
CALL set_table_property ('SUPPLIER', 'distribution_key', 'S_SUPPKEY');
CALL set_table_property ('SUPPLIER', 'colocate_with', 'lineitem');
CALL set_table_property ('SUPPLIER', 'bitmap_columns', 'S_NATIONKEY');
CALL set_table_property ('SUPPLIER', 'dictionary_encoding_columns', '');
COMMIT;

DROP TABLE IF EXISTS NATION;

BEGIN;
CREATE TABLE NATION (
    N_NATIONKEY int NOT NULL PRIMARY KEY,
    N_NAME text NOT NULL,
    N_REGIONKEY int NOT NULL,
    N_COMMENT text NOT NULL
);
CALL set_table_property ('NATION', 'distribution_key', 'N_NATIONKEY');
CALL set_table_property ('NATION', 'colocate_with', 'lineitem');
CALL set_table_property ('NATION', 'bitmap_columns', '');
CALL set_table_property ('NATION', 'dictionary_encoding_columns', '');
COMMIT;

DROP TABLE IF EXISTS REGION;

BEGIN;
CREATE TABLE REGION (
    R_REGIONKEY int NOT NULL PRIMARY KEY,
    R_NAME text NOT NULL,
    R_COMMENT text
);
CALL set_table_property ('REGION', 'distribution_key', 'R_REGIONKEY');
CALL set_table_property ('REGION', 'colocate_with', 'lineitem');
CALL set_table_property ('REGION', 'bitmap_columns', '');
CALL set_table_property ('REGION', 'dictionary_encoding_columns', '');
COMMIT;

Etapa 3: Importar dados de exemplo

Com as tabelas internas prontas, siga os passos abaixo para carregar dados nelas.

Nota

Foreign tables apenas mapeiam campos de origens externas e não retêm dados no Hologres. Utilize-as para consultar informações armazenadas no projeto MaxCompute MAXCOMPUTE_PUBLIC_DATA.

Na página SQL Editor, clique em New SQL Window no canto superior esquerdo.

Na página Ad-hoc Query, selecione o Instance Name e o Database criados, insira as instruções a seguir no editor SQL e clique em Run.

Os comandos SQL abaixo importam dados de tabelas como public.odps_customer_10g e public.odps_lineitem_10g, pertencentes ao projeto público MaxCompute MAXCOMPUTE_PUBLIC_DATA, e os carregam nas tabelas internas correspondentes para consultas subsequentes.

INSERT INTO public.customer SELECT * FROM public.odps_customer_10g ;
INSERT INTO public.lineitem SELECT * FROM public.odps_lineitem_10g ;
INSERT INTO public.nation SELECT * FROM public.odps_nation_10g ;
INSERT INTO public.orders SELECT * FROM public.odps_orders_10g ;
INSERT INTO public.part SELECT * FROM public.odps_part_10g ;
INSERT INTO public.partsupp SELECT * FROM public.odps_partsupp_10g ;
INSERT INTO public.region SELECT * FROM public.odps_region_10g ;
INSERT INTO public.supplier SELECT * FROM public.odps_supplier_10g ;

vacuum nation;
vacuum region;
vacuum supplier;
vacuum customer;
vacuum part;
vacuum partsupp;
vacuum orders;
vacuum lineitem;

analyze nation;
analyze region;
analyze lineitem;
analyze orders;
analyze customer;
analyze part;
analyze partsupp;
analyze supplier;
analyze lineitem (l_orderkey,l_partkey,l_suppkey);
analyze orders (o_custkey);
analyze partsupp(ps_partkey,ps_suppkey);

Etapa 4: Consultar dados nas tabelas

Na página SQL Editor, clique em New SQL Window no canto superior esquerdo.

Na nova página Ad-hoc Query, selecione o Instance Name e o Database criados, insira as instruções abaixo no editor SQL e clique em Run.

Nota

As instruções SQL a seguir consultam dados em tabelas internas. Caso prefira usar uma foreign table, substitua o nome da tabela na instrução pelo nome da foreign table correspondente.

A tabela abaixo contém links para as 22 instruções SQL do TPC-H. Clique no link desejado para visualizar a instrução específica.

Nome	Instrução de consulta
22 instruções de consulta TPC-H	Q1	Q2	Q3	Q4
	Q5	Q6	Q7	Q8
	Q9	Q10	Q11	Q12
	Q13	Q14	Q15	Q16
	Q17	Q18	Q19	Q20
	Q21	Q22	-	-

select
        l_returnflag,
        l_linestatus,
        sum(l_quantity) as sum_qty,
        sum(l_extendedprice) as sum_base_price,
        sum(l_extendedprice * (1 - l_discount)) as sum_disc_price,
        sum(l_extendedprice * (1 - l_discount) * (1 + l_tax)) as sum_charge,
        avg(l_quantity) as avg_qty,
        avg(l_extendedprice) as avg_price,
        avg(l_discount) as avg_disc,
        count(*) as count_order
from
        lineitem
where
        l_shipdate <= date '1998-12-01' - interval '120' day
group by
        l_returnflag,
        l_linestatus
order by
        l_returnflag,
        l_linestatus;

select
        s_acctbal,
        s_name,
        n_name,
        p_partkey,
        p_mfgr,
        s_address,
        s_phone,
        s_comment
from
        part,
        supplier,
        partsupp,
        nation,
        region
where
        p_partkey = ps_partkey
        and s_suppkey = ps_suppkey
        and p_size = 48
        and p_type like '%STEEL'
        and s_nationkey = n_nationkey
        and n_regionkey = r_regionkey
        and r_name = 'EUROPE'
        and ps_supplycost = (
                select
                        min(ps_supplycost)
                from
                        partsupp,
                        supplier,
                        nation,
                        region
                where
                        p_partkey = ps_partkey
                        and s_suppkey = ps_suppkey
                        and s_nationkey = n_nationkey
                        and n_regionkey = r_regionkey
                        and r_name = 'EUROPE'
        )
order by
        s_acctbal desc,
        n_name,
        s_name,
        p_partkey
limit 100;

select
        l_orderkey,
        sum(l_extendedprice * (1 - l_discount)) as revenue,
        o_orderdate,
        o_shippriority
from
        customer,
        orders,
        lineitem
where
        c_mktsegment = 'MACHINERY'
        and c_custkey = o_custkey
        and l_orderkey = o_orderkey
        and o_orderdate < date '1995-03-23'
        and l_shipdate > date '1995-03-23'
group by
        l_orderkey,
        o_orderdate,
        o_shippriority
order by
        revenue desc,
        o_orderdate
limit 10;

select
        o_orderpriority,
        count(*) as order_count
from
        orders
where
        o_orderdate >= date '1996-07-01'
        and o_orderdate < date '1996-07-01' + interval '3' month
        and exists (
                select
                        *
                from
                        lineitem
                where
                        l_orderkey = o_orderkey
                        and l_commitdate < l_receiptdate
        )
group by
        o_orderpriority
order by
        o_orderpriority;

select
        n_name,
        sum(l_extendedprice * (1 - l_discount)) as revenue
from
        customer,
        orders,
        lineitem,
        supplier,
        nation,
        region
where
        c_custkey = o_custkey
        and l_orderkey = o_orderkey
        and l_suppkey = s_suppkey
        and c_nationkey = s_nationkey
        and s_nationkey = n_nationkey
        and n_regionkey = r_regionkey
        and r_name = 'EUROPE'
        and o_orderdate >= date '1996-01-01'
        and o_orderdate < date '1996-01-01' + interval '1' year
group by
        n_name
order by
        revenue desc;

select
        sum(l_extendedprice * l_discount) as revenue
from
        lineitem
where
        l_shipdate >= date '1996-01-01'
        and l_shipdate < date '1996-01-01' + interval '1' year
        and l_discount between 0.02 - 0.01 and 0.02 + 0.01
        and l_quantity < 24;

set hg_experimental_enable_double_equivalent=on;
select
        supp_nation,
        cust_nation,
        l_year,
        sum(volume) as revenue
from
        (
                select
                        n1.n_name as supp_nation,
                        n2.n_name as cust_nation,
                        extract(year from l_shipdate) as l_year,
                        l_extendedprice * (1 - l_discount) as volume
                from
                        supplier,
                        lineitem,
                        orders,
                        customer,
                        nation n1,
                        nation n2
                where
                        s_suppkey = l_suppkey
                        and o_orderkey = l_orderkey
                        and c_custkey = o_custkey
                        and s_nationkey = n1.n_nationkey
                        and c_nationkey = n2.n_nationkey
                        and (
                                (n1.n_name = 'CANADA' and n2.n_name = 'BRAZIL')
                                or (n1.n_name = 'BRAZIL' and n2.n_name = 'CANADA')
                        )
                        and l_shipdate between date '1995-01-01' and date '1996-12-31'
        ) as shipping
group by
        supp_nation,
        cust_nation,
        l_year
order by
        supp_nation,
        cust_nation,
        l_year;

set hg_experimental_enable_double_equivalent=on;
select
        o_year,
        sum(case
                when nation = 'BRAZIL' then volume
                else 0
        end) / sum(volume) as mkt_share
from
        (
                select
                        extract(year from o_orderdate) as o_year,
                        l_extendedprice * (1 - l_discount) as volume,
                        n2.n_name as nation
                from
                        part,
                        supplier,
                        lineitem,
                        orders,
                        customer,
                        nation n1,
                        nation n2,
                        region
                where
                        p_partkey = l_partkey
                        and s_suppkey = l_suppkey
                        and l_orderkey = o_orderkey
                        and o_custkey = c_custkey
                        and c_nationkey = n1.n_nationkey
                        and n1.n_regionkey = r_regionkey
                        and r_name = 'AMERICA'
                        and s_nationkey = n2.n_nationkey
                        and o_orderdate between date '1995-01-01' and date '1996-12-31'
                        and p_type = 'LARGE ANODIZED COPPER'
        ) as all_nations
group by
        o_year
order by
        o_year;

set hg_experimental_enable_double_equivalent=on;
select
        nation,
        o_year,
        sum(amount) as sum_profit
from
        (
                select
                        n_name as nation,
                        extract(year from o_orderdate) as o_year,
                        l_extendedprice * (1 - l_discount) - ps_supplycost * l_quantity as amount
                from
                        part,
                        supplier,
                        lineitem,
                        partsupp,
                        orders,
                        nation
                where
                        s_suppkey = l_suppkey
                        and ps_suppkey = l_suppkey
                        and ps_partkey = l_partkey
                        and p_partkey = l_partkey
                        and o_orderkey = l_orderkey
                        and s_nationkey = n_nationkey
                        and p_name like '%maroon%'
        ) as profit
group by
        nation,
        o_year
order by
        nation,
        o_year desc;

Q10

select
        c_custkey,
        c_name,
        sum(l_extendedprice * (1 - l_discount)) as revenue,
        c_acctbal,
        n_name,
        c_address,
        c_phone,
        c_comment
from
        customer,
        orders,
        lineitem,
        nation
where
        c_custkey = o_custkey
        and l_orderkey = o_orderkey
        and o_orderdate >= date '1993-02-01'
        and o_orderdate < date '1993-02-01' + interval '3' month
        and l_returnflag = 'R'
        and c_nationkey = n_nationkey
group by
        c_custkey,
        c_name,
        c_acctbal,
        c_phone,
        n_name,
        c_address,
        c_comment
order by
        revenue desc
limit 20;

Q11

select
        ps_partkey,
        sum(ps_supplycost * ps_availqty) as value
from
        partsupp,
        supplier,
        nation
where
        ps_suppkey = s_suppkey
        and s_nationkey = n_nationkey
        and n_name = 'EGYPT'
group by
        ps_partkey having
                sum(ps_supplycost * ps_availqty) > (
                        select
                                sum(ps_supplycost * ps_availqty) * 0.0001000000
                        from
                                partsupp,
                                supplier,
                                nation
                        where
                                ps_suppkey = s_suppkey
                                and s_nationkey = n_nationkey
                                and n_name = 'EGYPT'
                )
order by
        value desc;

Q12

select
        l_shipmode,
        sum(case
                when o_orderpriority = '1-URGENT'
                        or o_orderpriority = '2-HIGH'
                        then 1
                else 0
        end) as high_line_count,
        sum(case
                when o_orderpriority <> '1-URGENT'
                        and o_orderpriority <> '2-HIGH'
                        then 1
                else 0
        end) as low_line_count
from
        orders,
        lineitem
where
        o_orderkey = l_orderkey
        and l_shipmode in ('FOB', 'AIR')
        and l_commitdate < l_receiptdate
        and l_shipdate < l_commitdate
        and l_receiptdate >= date '1997-01-01'
        and l_receiptdate < date '1997-01-01' + interval '1' year
group by
        l_shipmode
order by
        l_shipmode;

Q13

select
        c_count,
        count(*) as custdist
from
        (
                select
                        c_custkey,
                        count(o_orderkey) as c_count
                from
                        customer left outer join orders on
                                c_custkey = o_custkey
                                and o_comment not like '%special%deposits%'
                group by
                        c_custkey
        ) c_orders
group by
        c_count
order by
        custdist desc,
        c_count desc;

Q14

select
        100.00 * sum(case
                when p_type like 'PROMO%'
                        then l_extendedprice * (1 - l_discount)
                else 0
        end) / sum(l_extendedprice * (1 - l_discount)) as promo_revenue
from
        lineitem,
        part
where
        l_partkey = p_partkey
        and l_shipdate >= date '1997-06-01'
        and l_shipdate < date '1997-06-01' + interval '1' month;

Q15

with revenue0(SUPPLIER_NO, TOTAL_REVENUE)  as
  (
  select
    l_suppkey,
    sum(l_extendedprice * (1 - l_discount))
  from
    lineitem
  where
    l_shipdate >= date '1995-02-01'
    and l_shipdate < date '1995-02-01' + interval '3' month
  group by
    l_suppkey
  )
select
  s_suppkey,
  s_name,
  s_address,
  s_phone,
  total_revenue
from
  supplier,
  revenue0
where
  s_suppkey = supplier_no
  and total_revenue = (
    select
      max(total_revenue)
    from
      revenue0
  )
order by
  s_suppkey;

Q16

select
        p_brand,
        p_type,
        p_size,
        count(distinct ps_suppkey) as supplier_cnt
from
        partsupp,
        part
where
        p_partkey = ps_partkey
        and p_brand <> 'Brand#45'
        and p_type not like 'SMALL ANODIZED%'
        and p_size in (47, 15, 37, 30, 46, 16, 18, 6)
        and ps_suppkey not in (
                select
                        s_suppkey
                from
                        supplier
                where
                        s_comment like '%Customer%Complaints%'
        )
group by
        p_brand,
        p_type,
        p_size
order by
        supplier_cnt desc,
        p_brand,
        p_type,
        p_size;

Q17

select
        sum(l_extendedprice) / 7.0 as avg_yearly
from
        lineitem,
        part
where
        p_partkey = l_partkey
        and p_brand = 'Brand#51'
        and p_container = 'WRAP PACK'
        and l_quantity < (
                select
                        0.2 * avg(l_quantity)
                from
                        lineitem
                where
                        l_partkey = p_partkey
        );

Q18

select
        c_name,
        c_custkey,
        o_orderkey,
        o_orderdate,
        o_totalprice,
        sum(l_quantity)
from
        customer,
        orders,
        lineitem
where
        o_orderkey in (
                select
                        l_orderkey
                from
                        lineitem
                group by
                        l_orderkey having
                                sum(l_quantity) > 312
        )
        and c_custkey = o_custkey
        and o_orderkey = l_orderkey
group by
        c_name,
        c_custkey,
        o_orderkey,
        o_orderdate,
        o_totalprice
order by
        o_totalprice desc,
        o_orderdate
limit 100;

Q19

select
        sum(l_extendedprice* (1 - l_discount)) as revenue
from
        lineitem,
        part
where
        (
                p_partkey = l_partkey
                and p_brand = 'Brand#52'
                and p_container in ('SM CASE', 'SM BOX', 'SM PACK', 'SM PKG')
                and l_quantity >= 3 and l_quantity <= 3 + 10
                and p_size between 1 and 5
                and l_shipmode in ('AIR', 'AIR REG')
                and l_shipinstruct = 'DELIVER IN PERSON'
        )
        or
        (
                p_partkey = l_partkey
                and p_brand = 'Brand#43'
                and p_container in ('MED BAG', 'MED BOX', 'MED PKG', 'MED PACK')
                and l_quantity >= 12 and l_quantity <= 12 + 10
                and p_size between 1 and 10
                and l_shipmode in ('AIR', 'AIR REG')
                and l_shipinstruct = 'DELIVER IN PERSON'
        )
        or
        (
                p_partkey = l_partkey
                and p_brand = 'Brand#52'
                and p_container in ('LG CASE', 'LG BOX', 'LG PACK', 'LG PKG')
                and l_quantity >= 21 and l_quantity <= 21 + 10
                and p_size between 1 and 15
                and l_shipmode in ('AIR', 'AIR REG')
                and l_shipinstruct = 'DELIVER IN PERSON'
        );

Q20

select
        s_name,
        s_address
from
        supplier,
        nation
where
        s_suppkey in (
                select
                        ps_suppkey
                from
                        partsupp
                where
                        ps_partkey in (
                                select
                                        p_partkey
                                from
                                        part
                                where
                                        p_name like 'drab%'
                        )
                        and ps_availqty > (
                                select
                                        0.5 * sum(l_quantity)
                                from
                                        lineitem
                                where
                                        l_partkey = ps_partkey
                                        and l_suppkey = ps_suppkey
                                        and l_shipdate >= date '1996-01-01'
                                        and l_shipdate < date '1996-01-01' + interval '1' year
                        )
        )
        and s_nationkey = n_nationkey
        and n_name = 'KENYA'
order by
        s_name;

Q21

select
        s_name,
        count(*) as numwait
from
        supplier,
        lineitem l1,
        orders,
        nation
where
        s_suppkey = l1.l_suppkey
        and o_orderkey = l1.l_orderkey
        and o_orderstatus = 'F'
        and l1.l_receiptdate > l1.l_commitdate
        and exists (
                select
                        *
                from
                        lineitem l2
                where
                        l2.l_orderkey = l1.l_orderkey
                        and l2.l_suppkey <> l1.l_suppkey
        )
        and not exists (
                select
                        *
                from
                        lineitem l3
                where
                        l3.l_orderkey = l1.l_orderkey
                        and l3.l_suppkey <> l1.l_suppkey
                        and l3.l_receiptdate > l3.l_commitdate
        )
        and s_nationkey = n_nationkey
        and n_name = 'PERU'
group by
        s_name
order by
        numwait desc,
        s_name
limit 100;

Q22

select
        cntrycode,
        count(*) as numcust,
        sum(c_acctbal) as totacctbal
from
        (
                select
                        substring(c_phone from 1 for 2) as cntrycode,
                        c_acctbal
                from
                        customer
                where
                        substring(c_phone from 1 for 2) in
                                ('24', '32', '17', '18', '12', '14', '22')
                        and c_acctbal > (
                                select
                                        avg(c_acctbal)
                                from
                                        customer
                                where
                                        c_acctbal > 0.00
                                        and substring(c_phone from 1 for 2) in
                                                ('24', '32', '17', '18', '12', '14', '22')
                        )
                        and not exists (
                                select
                                        *
                                from
                                        orders
                                where
                                        o_custkey = c_custkey
                        )
        ) as custsale
group by
        cntrycode
order by
        cntrycode;