[hadoop@h001 ~]$ cat .hivehistory
show tables;
show databases;
show databases;
create table jtemp01 (a int, b string);
create table jtmep01_invites (a int, b string) partitioned by (cs string);
describe jtemp01;
describe jtemp01_invites;
alter table jtemp01 add columns (new_col int);
alter table invites add columns ( new_col2 int comment 'aaaa comment');
alter table jtmep01_invites add columns( new_col2 int comment 'aaa comment);
describe jtmep01_invites;
create table invites (foo int, bar string) partitioned by (ds string);
show tables;
describe invites;
alter table invites add columns (new_col2 int comment ' by jacob ');
describe invites;
load data local inpath './examples/files/kv2.txt' overwrite into table invites partition (ds='2008-08-15');
select a.foo from invites a where a.ds='2008-08-15';
select a.foo, a.bar, a.new_col2, a. from invites a where a.ds='2008-08-15';
select * from invites a where a.ds='2008-08-15';
select a.foo, a.ba* from invites a where a.ds='2008-08-15';
select a.foo, a.bar from invites a where a.ds='2008-08-15';
show tables;
exit;
show databases;
show tables;
exit;
show database;
show databases;
ls
;
exit;
show databases;
show tables;
ls
;
cls
;
clear;
show tables;
creat table invites ( foo int, bar string) partitioned by (ds string);
create table invites ( foo int, bar string) partitioned by (ds string);
describe invites;
alter table invites add column (new_col2 int comment ' by jacob ');
alter table invites add columns (new_col2 int comment ' by jacob ');
describe invites;
load data local inpath './examples/files/kv2.txt' overwrite into table invites partition (ds='2008-08-15');
load data local inpath '../examples/files/kv2.txt' overwrite into table invites partition (ds='2008-08-15');
select a.foo from invites a where a.ds = '2008-08-15';
sdfnl
;
load data local inpath '../examples/files/kv3.txt' overwrite into table invites partition (ds='2013-06-16');
select a.foo from invites a where a.ds='2013-06-16';
select a.foo from invites a;
CREATE TABLE airline_delay(
Year INT,
Month INT,
DayofMonth INT,
DayOfWeek INT,
DepTime INT,
CRSDepTime INT,
ArrTime INT,
CRSArrTime INT,
UniqueCarrier STRING,
FlightNum INT,
TailNum STRING,
ActualElapsedTime INT,
CRSElapsedTime INT,
AirTime INT,
ArrDelay INT,
DepDelay INT,
Origin STRING,
Dest STRING,
Distance INT,
TaxiIn INT,
TaxiOut INT,
Cancelled INT,
CancellationCode STRING COMMENT 'A = carrier, B = weather, C = NAS, D=security' ,
Diverted INT COMMENT '1 = yes, 0 = no',
CarrierDelay STRING,
WeatherDelay STRING,
NASDelay STRING,
SecurityDelay STRING,
LateAircraftDelay STRING
)
COMMENT 'The data consists of flight arrival and departure details for all commercial flights within the USA, from October 1987 to April 2008'
Partitioned by (DelayYear INT)
ROW FORMAT DELIMITED
FIELDS TERMINATED BY ','
LINES TERMINATED BY '\n'
STORED AS TEXTFILE;
CREATE TABLE airline_delay(
Year INT,
Month INT,
DayofMonth INT,
DayOfWeek INT,
DepTime INT,
CRSDepTime INT,
ArrTime INT,
CRSArrTime INT,
UniqueCarrier STRING,
FlightNum INT,
TailNum STRING,
ActualElapsedTime INT,
CRSElapsedTime INT,
AirTime INT,
ArrDelay INT,
DepDelay INT,
Origin STRING,
Dest STRING,
Distance INT,
TaxiIn INT,
TaxiOut INT,
Cancelled INT,
CancellationCode STRING COMMENT 'A = carrier, B = weather, C = NAS, D=security' ,
Diverted INT COMMENT '1 = yes, 0 = no',
CarrierDelay STRING,
WeatherDelay STRING,
NASDelay STRING,
SecurityDelay STRING,
LateAircraftDelay STRING
)
COMMENT 'The data consists of flight arrival and departure details for all commercial flights within the USA, from October 1987 to April 2008'
Partitioned by (DelayYear INT)
ROW FORMAT DELIMITED
FIELDS TERMINATED BY ','
LINES TERMINATED BY '\n'
STORED AS TEXTFILE;
describe airline_delay
;
load data local inpath '../examples/2008_new.csv'
overwrite into table airline_delay
partition (delayYear='2008') ;
select * from airline_delay
where delayYear = '2008'
LIMIT 10;
select count(*) from airline_delay ;
load data local inpath '../examples/1987_new.csv'
overwrite into table airline_delay
partition (delayYear='1987') ;
select * from airline_delay limit 10;
select * from airline_delay where delayYear = 1987 limit 10;
select count(*) from airline_delay where delayYear = 1987 limit 10;
select count(*) from airline_delay where delayYear = 1987;
select Year, Month, count(*) as arrrive_delay_count
from airline_delay
where delayYear = 1987
and arrDelay > 0
Group by Year, Month;
select Year, Month, AVG(ArrDelay) as avg_arrive_delay_time, AVG(depDelay) as avg_departure_delay_time
from airline_delay
where delayYear = 1987
and arrdelay > 0
group by Year, Month;
thanks for wathing this movie even though it is a bit boring
and not well organized ^^
anyway thanks again
from jacob calebpro@gmail.com
show databases
;
show tables;
exit
;
show tables
;
dfs-help
;
dfs -help
;
dfs -help;
dfs -ls;
select * from system_logs;
show tables;
describe jtemp01;
list
;
select * from jtemp01
;
select * from invites;
set hive.cli.print.header=true;
select * from invites limit 3;
[hadoop@h001 ~]$
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