Q8
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 = 'ECONOMY ANODIZED STEEL'
	) all_nations
group by
	o_year
order by
	o_year;

Oracle Execution Plan

Operation: table access
Options: FULL
Object_type: TABLE
Other: 
Object_owner: CALUSER01
Search_columns: 
Projection: P_PARTKEY
Object_name: PART
Alias: PART@SEL$2
Extended_information:    FP:P_TYPE='ECONOMY ANODIZED STEEL'
Access_predicates: 
Filter_predicates: P_TYPE='ECONOMY ANODIZED STEEL'
Select_level: SEL$F5BB74E1
--------------------
Operation: table access
Options: FULL
Object_type: TABLE
Other: 
Object_owner: CALUSER01
Search_columns: 
Projection: L_ORDERKEY^L_PARTKEY^L_SUPPKEY^L_EXTENDEDPRICE^L_DISCOUNT
Object_name: LINEITEM
Alias: LINEITEM@SEL$2
Extended_information: 
Access_predicates: 
Filter_predicates: 
Select_level: SEL$F5BB74E1
--------------------
Operation: hash join
Options: 
Object_type: 
Other: 
Object_owner: 
Search_columns: 
Projection:  L_ORDERKEY^L_DISCOUNT^L_SUPPKEY^L_EXTENDEDPRICE
Object_name: 
Alias: 
Extended_information:    AP:P_PARTKEY=L_PARTKEY
Access_predicates: P_PARTKEY=L_PARTKEY
Filter_predicates: 
Select_level: 
--------------------
Operation: table access
Options: FULL
Object_type: TABLE
Other: 
Object_owner: CALUSER01
Search_columns: 
Projection: S_SUPPKEY^S_NATIONKEY
Object_name: SUPPLIER
Alias: SUPPLIER@SEL$2
Extended_information: 
Access_predicates: 
Filter_predicates: 
Select_level: SEL$F5BB74E1
--------------------
Operation: hash join
Options: 
Object_type: 
Other: 
Object_owner: 
Search_columns: 
Projection:  L_ORDERKEY^L_DISCOUNT^L_EXTENDEDPRICE^S_NATIONKEY
Object_name: 
Alias: 
Extended_information:    AP:S_SUPPKEY=L_SUPPKEY
Access_predicates: S_SUPPKEY=L_SUPPKEY
Filter_predicates: 
Select_level: 
--------------------
Operation: table access
Options: FULL
Object_type: TABLE
Other: 
Object_owner: CALUSER01
Search_columns: 
Projection: O_ORDERKEY^O_CUSTKEY^O_ORDERDATE
Object_name: ORDERS
Alias: ORDERS@SEL$2
Extended_information:    FP:O_ORDERDATE>=TO_DATE('1995-01-01 00:00:00', 'yyyy-mm-dd hh24:mi:ss') AND O_ORDERDATE<=TO_DATE('1996-12-31 00:00:00', 'yyyy-mm-dd hh24:mi:ss')
Access_predicates: 
Filter_predicates: O_ORDERDATE>=TO_DATE('1995-01-01 00:00:00', 'yyyy-mm-dd hh24:mi:ss')&O_ORDERDATE<=TO_DATE('1996-12-31 00:00:00', 'yyyy-mm-dd hh24:mi:ss')
Select_level: SEL$F5BB74E1
--------------------
Operation: hash join
Options: 
Object_type: 
Other: 
Object_owner: 
Search_columns: 
Projection:  S_NATIONKEY^L_DISCOUNT^L_EXTENDEDPRICE^O_ORDERDATE^O_CUSTKEY
Object_name: 
Alias: 
Extended_information:    AP:L_ORDERKEY=O_ORDERKEY
Access_predicates: L_ORDERKEY=O_ORDERKEY
Filter_predicates: 
Select_level: 
--------------------
Operation: table access
Options: FULL
Object_type: TABLE
Other: 
Object_owner: CALUSER01
Search_columns: 
Projection: C_CUSTKEY^C_NATIONKEY
Object_name: CUSTOMER
Alias: CUSTOMER@SEL$2
Extended_information: 
Access_predicates: 
Filter_predicates: 
Select_level: SEL$F5BB74E1
--------------------
Operation: hash join
Options: 
Object_type: 
Other: 
Object_owner: 
Search_columns: 
Projection:  S_NATIONKEY^L_DISCOUNT^L_EXTENDEDPRICE^O_ORDERDATE^C_NATIONKEY
Object_name: 
Alias: 
Extended_information:    AP:O_CUSTKEY=C_CUSTKEY
Access_predicates: O_CUSTKEY=C_CUSTKEY
Filter_predicates: 
Select_level: 
--------------------
Operation: table access
Options: FULL
Object_type: TABLE
Other: 
Object_owner: CALUSER01
Search_columns: 
Projection: N1.N_NATIONKEY^N1.N_REGIONKEY
Object_name: NATION
Alias: N1@SEL$2
Extended_information: 
Access_predicates: 
Filter_predicates: 
Select_level: SEL$F5BB74E1
--------------------
Operation: hash join
Options: 
Object_type: 
Other: 
Object_owner: 
Search_columns: 
Projection:  S_NATIONKEY^L_DISCOUNT^L_EXTENDEDPRICE^O_ORDERDATE^N1.N_REGIONKEY
Object_name: 
Alias: 
Extended_information:    AP:C_NATIONKEY=N1.N_NATIONKEY
Access_predicates: C_NATIONKEY=N1.N_NATIONKEY
Filter_predicates: 
Select_level: 
--------------------
Operation: table access
Options: FULL
Object_type: TABLE
Other: 
Object_owner: CALUSER01
Search_columns: 
Projection: N2.N_NATIONKEY^N2.N_NAME
Object_name: NATION
Alias: N2@SEL$2
Extended_information: 
Access_predicates: 
Filter_predicates: 
Select_level: SEL$F5BB74E1
--------------------
Operation: hash join
Options: 
Object_type: 
Other: 
Object_owner: 
Search_columns: 
Projection:  N1.N_REGIONKEY^L_DISCOUNT^L_EXTENDEDPRICE^O_ORDERDATE^N2.N_NAME
Object_name: 
Alias: 
Extended_information:    AP:S_NATIONKEY=N2.N_NATIONKEY
Access_predicates: S_NATIONKEY=N2.N_NATIONKEY
Filter_predicates: 
Select_level: 
--------------------
Operation: table access
Options: FULL
Object_type: TABLE
Other: 
Object_owner: CALUSER01
Search_columns: 
Projection: R_REGIONKEY
Object_name: REGION
Alias: REGION@SEL$2
Extended_information:    FP:R_NAME='AMERICA'
Access_predicates: 
Filter_predicates: R_NAME='AMERICA'
Select_level: SEL$F5BB74E1
--------------------
Operation: hash join
Options: 
Object_type: 
Other: 
Object_owner: 
Search_columns: 
Projection:  N2.N_NAME^L_DISCOUNT^L_EXTENDEDPRICE^O_ORDERDATE
Object_name: 
Alias: 
Extended_information:    AP:N1.N_REGIONKEY=R_REGIONKEY
Access_predicates: N1.N_REGIONKEY=R_REGIONKEY
Filter_predicates: 
Select_level: 
--------------------
Operation: sort
Options: GROUP BY
Object_type: 
Other: 
Object_owner: 
Search_columns: 
Projection:  EXTRACT(YEAR FROM INTERNAL_FUNCTION(O_ORDERDATE))^SUM(L_EXTENDEDPRICE*(1-L_DISCOUNT))^SUM(DECODE(N2.N_NAME,'BRAZIL',L_EXTENDEDPRICE*(1-L_DISCOUNT),0))
Object_name: 
Alias: 
Extended_information: 
Access_predicates: 
Filter_predicates: 
Select_level: SEL$F5BB74E1
--------------------
Operation: select statement
Options: 
Object_type: 
Other: 
Object_owner: 
Search_columns: 
Projection: 
Object_name: 
Alias: 
Extended_information: 
Access_predicates: 
Filter_predicates: 
Select_level: 
--------------------

Calpont Execution Plan

>SELECT MAIN
>>Returned Columns
1. ArithmeticColumn: FunctionColumn: extract(YEAR FROM INTERNAL_FUNCTION(O_ORDERDATE))

2. ArithmeticColumn: AggregateColumn sum(L_EXTENDEDPRICE*(1-L_DISCOUNT))
ArithmeticColumn: SimpleColumn L_EXTENDEDPRICE
  s/t/c/T/A: ///0/

ConstantColumn: 1(n)
SimpleColumn L_DISCOUNT
  s/t/c/T/A: ///0/

Operator: -
Operator: *


3. ArithmeticColumn: AggregateColumn sum(DECODE(N2.N_NAME,'BRAZIL',L_EXTENDEDPRICE*(1-L_DISCOUNT),0))
ArithmeticColumn: FunctionColumn: decode(N2.N_NAME,'BRAZIL',L_EXTENDEDPRICE*(1-L_DISCOUNT),0)


>>Filters
SimpleFilter
  SimpleColumn tpch.PART.P_TYPE
  s/t/c/T/A: tpch/PART/P_TYPE/50/
  Operator: =  ConstantColumn: ECONOMY ANODIZED STEEL(l)
SimpleFilter
  SimpleColumn tpch.PART.P_PARTKEY
  s/t/c/T/A: tpch/PART/P_PARTKEY/46/PART
  Operator: =  SimpleColumn tpch.LINEITEM.L_PARTKEY
  s/t/c/T/A: tpch/LINEITEM/L_PARTKEY/26/LINEITEM

Operator: and
SimpleFilter
  SimpleColumn tpch.SUPPLIER.S_SUPPKEY
  s/t/c/T/A: tpch/SUPPLIER/S_SUPPKEY/55/SUPPLIER
  Operator: =  SimpleColumn tpch.LINEITEM.L_SUPPKEY
  s/t/c/T/A: tpch/LINEITEM/L_SUPPKEY/27/LINEITEM

Operator: and
SimpleFilter
  SimpleColumn tpch.ORDERS.O_ORDERDATE
  s/t/c/T/A: tpch/ORDERS/O_ORDERDATE/20/ORDERS
  Operator: >=  ArithmeticColumn: FunctionColumn: to_date('1995-01-01 00:00:00', 'yyyy-mm-dd hh24:mi:ss')

SimpleFilter
  SimpleColumn tpch.ORDERS.O_ORDERDATE
  s/t/c/T/A: tpch/ORDERS/O_ORDERDATE/20/ORDERS
  Operator: <=  ArithmeticColumn: FunctionColumn: to_date('1996-12-31 00:00:00', 'yyyy-mm-dd hh24:mi:ss')

Operator: AND
Operator: and
SimpleFilter
  SimpleColumn tpch.LINEITEM.L_ORDERKEY
  s/t/c/T/A: tpch/LINEITEM/L_ORDERKEY/25/LINEITEM
  Operator: =  SimpleColumn tpch.ORDERS.O_ORDERKEY
  s/t/c/T/A: tpch/ORDERS/O_ORDERKEY/16/ORDERS

Operator: and
SimpleFilter
  SimpleColumn tpch.ORDERS.O_CUSTKEY
  s/t/c/T/A: tpch/ORDERS/O_CUSTKEY/17/ORDERS
  Operator: =  SimpleColumn tpch.CUSTOMER.C_CUSTKEY
  s/t/c/T/A: tpch/CUSTOMER/C_CUSTKEY/8/CUSTOMER

Operator: and
SimpleFilter
  SimpleColumn tpch.CUSTOMER.C_NATIONKEY
  s/t/c/T/A: tpch/CUSTOMER/C_NATIONKEY/11/CUSTOMER
  Operator: =  SimpleColumn tpch.NATION.N_NATIONKEY
  s/t/c/T/A: tpch/NATION/N_NATIONKEY/4/N1

Operator: and
SimpleFilter
  SimpleColumn tpch.SUPPLIER.S_NATIONKEY
  s/t/c/T/A: tpch/SUPPLIER/S_NATIONKEY/58/SUPPLIER
  Operator: =  SimpleColumn tpch.NATION.N_NATIONKEY
  s/t/c/T/A: tpch/NATION/N_NATIONKEY/4/N2

Operator: and
SimpleFilter
  SimpleColumn tpch.REGION.R_NAME
  s/t/c/T/A: tpch/REGION/R_NAME/2/
  Operator: =  ConstantColumn: AMERICA(l)
Operator: and
SimpleFilter
  SimpleColumn tpch.NATION.N_REGIONKEY
  s/t/c/T/A: tpch/NATION/N_REGIONKEY/6/N1
  Operator: =  SimpleColumn tpch.REGION.R_REGIONKEY
  s/t/c/T/A: tpch/REGION/R_REGIONKEY/1/REGION

Operator: and
>>Group By Columns
ArithmeticColumn: FunctionColumn: extract(YEAR FROM INTERNAL_FUNCTION(O_ORDERDATE))

ArithmeticColumn: AggregateColumn sum(L_EXTENDEDPRICE*(1-L_DISCOUNT))
ArithmeticColumn: SimpleColumn L_EXTENDEDPRICE
  s/t/c/T/A: ///0/

ConstantColumn: 1(n)
SimpleColumn L_DISCOUNT
  s/t/c/T/A: ///0/

Operator: -
Operator: *


ArithmeticColumn: AggregateColumn sum(DECODE(N2.N_NAME,'BRAZIL',L_EXTENDEDPRICE*(1-L_DISCOUNT),0))
ArithmeticColumn: FunctionColumn: decode(N2.N_NAME,'BRAZIL',L_EXTENDEDPRICE*(1-L_DISCOUNT),0)


SessionID: 4834
TxnID: 313
VerID: 313
--- Column Map ---
C_CUSTKEY : 0x9e1eec8
C_NATIONKEY : 0x9e12238
L_DISCOUNT : 0x9e122b8
L_EXTENDEDPRICE : 0x9e121b0
L_ORDERKEY : 0x9e0d7c8
L_PARTKEY : 0x9e12150
L_SUPPKEY : 0x9e12180
N_NAME : 0x9e1ec38
N_NATIONKEY : 0x9e119b8
N_NATIONKEY : 0x9e1ec08
N_REGIONKEY : 0x9e119e8
O_CUSTKEY : 0x9e12588
O_ORDERDATE : 0x9e125b8
O_ORDERKEY : 0x9e12558
P_PARTKEY : 0x9e06df8
P_TYPE : 0x9e0d758
R_NAME : 0x9e1ea58
R_REGIONKEY : 0x9e1e9d8
S_NATIONKEY : 0x9e123b8
S_SUPPKEY : 0x9e12388