| -- SORT_QUERY_RESULTS |
| |
| set hive.support.concurrency=true; |
| set hive.txn.manager=org.apache.hadoop.hive.ql.lockmgr.DbTxnManager; |
| set hive.strict.checks.cartesian.product=false; |
| set hive.stats.fetch.column.stats=true; |
| set hive.optimize.constraints.join=false; |
| |
| create table emps_n30 ( |
| empid int, |
| deptno int, |
| name varchar(256), |
| salary float, |
| commission int) |
| stored as orc TBLPROPERTIES ('transactional'='true'); |
| insert into emps_n30 values (100, 10, 'Bill', 10000, 1000), (200, 20, 'Eric', 8000, 500), |
| (150, 10, 'Sebastian', 7000, null), (110, 10, 'Theodore', 10000, 250), (120, 10, 'Bill', 10000, 250); |
| |
| create table depts_n20 ( |
| deptno int, |
| name varchar(256), |
| locationid int) |
| stored as orc TBLPROPERTIES ('transactional'='true'); |
| insert into depts_n20 values (10, 'Sales', 10), (30, 'Marketing', null), (20, 'HR', 20); |
| |
| create table dependents_n20 ( |
| empid int, |
| name varchar(256)) |
| stored as orc TBLPROPERTIES ('transactional'='true'); |
| insert into dependents_n20 values (10, 'Michael'), (20, 'Jane'); |
| |
| create table locations_n20 ( |
| locationid int, |
| name varchar(256)) |
| stored as orc TBLPROPERTIES ('transactional'='true'); |
| insert into locations_n20 values (10, 'San Francisco'), (20, 'San Diego'); |
| |
| alter table emps_n30 add constraint pk1 primary key (empid) disable novalidate rely; |
| alter table depts_n20 add constraint pk2 primary key (deptno) disable novalidate rely; |
| alter table dependents_n20 add constraint pk3 primary key (empid) disable novalidate rely; |
| alter table locations_n20 add constraint pk4 primary key (locationid) disable novalidate rely; |
| |
| alter table emps_n30 add constraint fk1 foreign key (deptno) references depts_n20(deptno) disable novalidate rely; |
| alter table depts_n20 add constraint fk2 foreign key (locationid) references locations_n20(locationid) disable novalidate rely; |
| |
| -- EXAMPLE 1 |
| create materialized view mv1_n20 as |
| select deptno, name, salary, commission |
| from emps_n30; |
| |
| explain |
| select emps_n30.name, emps_n30.salary, emps_n30.commission |
| from emps_n30 |
| join depts_n20 using (deptno); |
| |
| select emps_n30.name, emps_n30.salary, emps_n30.commission |
| from emps_n30 |
| join depts_n20 using (deptno); |
| |
| drop materialized view mv1_n20; |
| |
| -- EXAMPLE 2 |
| create materialized view mv1_n20 as |
| select empid, emps_n30.deptno, count(*) as c, sum(empid) as s |
| from emps_n30 join depts_n20 using (deptno) |
| group by empid, emps_n30.deptno; |
| |
| explain |
| select depts_n20.deptno, count(*) as c, sum(empid) as s |
| from emps_n30 join depts_n20 using (deptno) |
| group by depts_n20.deptno; |
| |
| select depts_n20.deptno, count(*) as c, sum(empid) as s |
| from emps_n30 join depts_n20 using (deptno) |
| group by depts_n20.deptno; |
| |
| drop materialized view mv1_n20; |
| |
| -- EXAMPLE 3 |
| create materialized view mv1_n20 as |
| select dependents_n20.empid, emps_n30.deptno, sum(salary) as s |
| from emps_n30 |
| join dependents_n20 on (emps_n30.empid = dependents_n20.empid) |
| group by dependents_n20.empid, emps_n30.deptno; |
| |
| explain |
| select dependents_n20.empid, sum(salary) as s |
| from emps_n30 |
| join depts_n20 on (emps_n30.deptno = depts_n20.deptno) |
| join dependents_n20 on (emps_n30.empid = dependents_n20.empid) |
| group by dependents_n20.empid; |
| |
| select dependents_n20.empid, sum(salary) as s |
| from emps_n30 |
| join depts_n20 on (emps_n30.deptno = depts_n20.deptno) |
| join dependents_n20 on (emps_n30.empid = dependents_n20.empid) |
| group by dependents_n20.empid; |
| |
| drop materialized view mv1_n20; |
| |
| -- EXAMPLE 4 |
| create materialized view mv1_n20 as |
| select emps_n30.empid, emps_n30.deptno, emps_n30.name as name1, emps_n30.salary, emps_n30.commission, dependents_n20.name as name2 |
| from emps_n30 join dependents_n20 on (emps_n30.empid = dependents_n20.empid); |
| |
| explain |
| select emps_n30.empid, dependents_n20.empid, emps_n30.deptno |
| from emps_n30 |
| join dependents_n20 on (emps_n30.empid = dependents_n20.empid) |
| join depts_n20 a on (emps_n30.deptno=a.deptno) |
| where emps_n30.name = 'Bill'; |
| |
| select emps_n30.empid, dependents_n20.empid, emps_n30.deptno |
| from emps_n30 |
| join dependents_n20 on (emps_n30.empid = dependents_n20.empid) |
| join depts_n20 a on (emps_n30.deptno=a.deptno) |
| where emps_n30.name = 'Bill'; |
| |
| drop materialized view mv1_n20; |
| |
| |
| |
| |
| |