Mengekstrak data di Hologres - Hologres

Topik ini menjelaskan cara mengekstrak data dari tabel internal atau menggunakan tabel asing di Hologres. Ini membantu Anda memahami performa unggul ekstraksi data di Hologres.

Prasyarat

Instans Hologres telah dibeli. Untuk informasi lebih lanjut, lihat Beli Instans Hologres.
Pengguna RAM yang akan melakukan operasi telah diberikan izin yang diperlukan. Untuk informasi lebih lanjut, lihat Berikan Izin kepada Pengguna RAM.

Informasi latar belakang

Hologres dapat merespons permintaan ekstraksi data dengan cepat. Topik ini menjelaskan cara membuat database, tabel asing, dan tabel internal, serta mengimpor data ke tabel internal di Hologres. Selain itu, topik ini juga menjelaskan cara mengekstrak data dari tabel internal atau menggunakan tabel asing di Hologres untuk memberikan pemahaman tentang performa unggul ekstraksi data di Hologres.

Prosedur

Buat Database
Langkah ini menunjukkan cara membuat database di Hologres. Database digunakan untuk menyimpan data instans Hologres Anda agar dapat dikueri nanti.
Buat Tabel
Langkah ini menunjukkan cara membuat tabel di database yang telah dibuat. Tabel digunakan untuk menyimpan data sampel. Anda dapat membuat tabel asing dan tabel internal di Hologres. Berikut adalah karakteristik kedua jenis tabel:
- Tabel asing memetakan bidang dalam sumber data eksternal dan tidak menyimpan data di Hologres.
- Tabel internal digunakan untuk menyimpan data di Hologres.
Impor Data Sampel
Langkah ini menunjukkan cara mengimpor data ke tabel internal di Hologres untuk kueri nanti. Dalam contoh ini, data berasal dari dataset TPC Benchmark H (TPC-H).
Ekstrak Data dari Tabel
Langkah ini menunjukkan cara mengekstrak data dari tabel. Dalam contoh ini, digunakan 22 pernyataan SQL TPC-H untuk menunjukkan ketepatan waktu dan stabilitas ekstraksi data di Hologres.

Langkah 1: Buat database

Masuk ke Konsol Hologres. Di panel navigasi kiri, klik Instances.
Di halaman Instances, klik nama instans tersebut.
Di panel navigasi kiri halaman Instance Details, klik Database Management.
Di halaman Database Authorization, klik Create Database di pojok kanan atas.

Di kotak dialog Create Database, konfigurasikan parameter sesuai dengan tabel berikut.

Tambahkan Database

Parameter	Deskripsi
Instance Name	Nama instans Hologres tempat Anda ingin membuat database. Secara default, nama instans yang terhubung ditampilkan. Anda juga dapat memilih instans Hologres lain dari daftar drop-down.
Database Name	Nama database. Dalam contoh ini, tpch_10g digunakan. null Nama database harus unik.
Permission Model	Model izin database. Nilai valid: SPM: model izin sederhana (SPM). Jika Anda memilih SPM, izin diberikan pada tingkat database. Peran berikut disediakan: admin, developer, writer, dan viewer. Anda dapat mengelola izin pada objek dalam database dengan cara yang nyaman dan aman dengan menggunakan beberapa fungsi manajemen izin. SLPM: model izin tingkat skema (SLPM). Jika Anda memilih SLPM, izin diberikan pada tingkat skema. Peran berikut disediakan: <db>.admin, <db>.<schema>.developer, <db>.<schema>.writer, dan <db>.<schema>.viewer. Dibandingkan dengan SPM, SLPM memungkinkan Anda mengelola izin secara lebih rinci. Ahli: model otorisasi PostgreSQL standar. Hologres kompatibel dengan PostgreSQL. Jika Anda memilih Ahli, Anda dapat menggunakan model otorisasi PostgreSQL standar.

Langkah 2: Buat tabel

Setelah database dibuat, Anda dapat membuat tabel di dalamnya. Anda dapat membuat tabel asing atau tabel internal tergantung pada lokasi penyimpanan data Anda.

Buat Tabel Asing
1. Masuk ke database.
  1. Di konsol HoloWeb, klik Metadata Management di bilah navigasi atas.
  2. Di tab Metadata Management, temukan database yang telah dibuat di panel navigasi kiri dan klik dua kali nama database tersebut. Di kotak dialog yang muncul, klik OK.
2. Buat tabel asing.
  1. Di tab SQL Editor, klik ikon di pojok kiri atas.
  2. Di tab Ad-hoc Query, pilih instans dari daftar drop-down Instance Name dan database dari daftar drop-down Database, masukkan pernyataan sampel berikut di editor SQL, lalu klik Running.
    Pernyataan SQL berikut digunakan untuk membuat tabel asing untuk kueri nanti. Tabel asing memetakan bidang dalam tabel sumber seperti tabel odps_customer_10g dan odps_lineitem_10g di Proyek 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');
```

Buat Tabel Internal

Masuk ke database.
1. Di konsol HoloWeb, klik Metadata Management di bilah navigasi atas.
2. Di tab Metadata Management, temukan database yang telah dibuat di panel navigasi kiri dan klik dua kali nama database tersebut. Di kotak dialog yang muncul, klik OK.

Buat tabel internal.

Pergi ke tab SQL Editor. Klik ikon Create SQL Query di pojok kiri atas.

Di tab Ad-hoc Query, pilih instans dari daftar drop-down Instance Name dan database dari daftar drop-down Database, masukkan pernyataan sampel berikut di editor SQL, lalu klik Running.

Pernyataan SQL berikut digunakan untuk membuat tabel internal bernama LINEITEM, ORDERS, PARTSUPP, PART, CUSTOMER, SUPPLIER, NATION, dan REGION. Tabel internal digunakan untuk menyimpan data untuk kueri nanti.

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;

Langkah 3: Impor data sampel

Setelah tabel internal dibuat, Anda dapat mengikuti langkah-langkah berikut untuk mengimpor data ke tabel internal di Hologres.

null

Tabel asing memetakan bidang dalam sumber data eksternal dan tidak menyimpan data di Hologres. Anda dapat menggunakan tabel asing di Hologres untuk mengekstrak data yang disimpan di proyek MaxCompute MAXCOMPUTE_PUBLIC_DATA.

Pergi ke tab SQL Editor. Klik ikon Create SQL Query di pojok kiri atas.

Di tab Ad-hoc Query, pilih instans tempat database milik dari daftar drop-down Instance Name dan pilih database dari daftar drop-down Database. Masukkan pernyataan berikut di editor SQL dan klik Running.

Pernyataan SQL berikut digunakan untuk mengimpor data untuk kueri nanti. Data diimpor dari tabel seperti public.odps_customer_10g dan public.odps_lineitem_10g di proyek MaxCompute MAXCOMPUTE_PUBLIC_DATA ke tabel internal dengan nama terkait di Hologres.

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);

Langkah 4: Ekstrak data di tabel

Pergi ke tab SQL Editor. Klik ikon Create SQL Query di pojok kiri atas.

null

Pernyataan SQL berikut digunakan untuk mengekstrak data dari tabel internal. Untuk mengekstrak data menggunakan tabel asing, ganti nama tabel dalam pernyataan dengan nama tabel asing.

Tabel berikut menyediakan tautan ke 22 pernyataan SQL TPC-H. Untuk melihat pernyataan SQL tertentu, Anda dapat mengklik tautan dalam tabel.

Nama	Pernyataan kueri
22 pernyataan kueri 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;