Create a table in Hive

Source: Internet
Author: User
Tags hadoop fs
When Hive creates a table, the regular expression is the same as that in java code. \ is used in RegexSerDe to indicate the anti-transcoding.

When Hive creates a table, the regular expression is the same as that in java code. \ is used in RegexSerDe to indicate the anti-transcoding.

1. When Hive creates a table, the regular expression is the same as that in java code. \ is used in RegexSerDe to represent the anti-transcoding.
Create table inst_cn_3 (
Ip string,
Time string,
Mac string,
Lan string,
Ver string,
Lc string,
Pn string,
Reg string,
Vrf string,
Line string)
Row format serde 'org. apache. Hadoop. hive. contrib. serde2.regexserde'
With serdeproperties (
"Input. regex "="-* ([\ d \.] +) * \ [([\ d] {2}/[\ w] +/[\ d] {4 }: [\ d] {2}: [\ d] {2}: [\ d] {2} \ s + \ + [\ d] +) \] * GET */mx3/inst/([0-9a-f] {12})/ver = ([\\. \ d] +), lan = (0x [\ w] + )(? :, Lc = ([\ w] + ))(? :, Pn = ([\ w] + ))(? :, Reg = ([0-1]) (? :, Vrf = ([\ w] + ))?. *"
)
Stored as textfile;

Alter table inst_cn_3 add columns (line string );
Alter table inst_cn_3 set serdeproperties (
"Input. regex "="-([\ d \.] +) \ [([\ d] {2}/[\ w] +/[\ d] {4}: [\ d] {2 }: [\ d] {2}: [\ d] {2} \ s + \ + [\ d] +) \] GET/mx3/inst/([0-9a-f] {12})/ver = ([\\. \ d] +), lan = (0x [\ w] + )(? :, Lc = ([\ w] + ))(? :, Pn = ([\ w] + ))(? :, Reg = ([0-1]) (? :, Vrf = ([\ w] + ))?. * | (.*)"
);
Select * from inst_cn_3 limit 100;

Select
Line
From inst_cn_3
Where
1 = 1
And mac is null
And line is not null
And! (Line rlike '. * unknowuser00 .*')
;

Hadoop fs-cp/mnt/nfs/log/statcn/inst/inst_cn_3. *. txt/hive/warehouse/inst_cn_3/

2011.06.09 hive Time Processing
1. select
From_unixtime (unix_timestamp ('02/May/2011: 00: 00: 00 + 000000', 'dd/MMMMM/yyyy: HH: mm: ss Z '), 'yyyy-MM-dd HH: mm: ss '),
From_unixtime (unix_timestamp ('02/May/2011: 23: 59: 59 + 0800 ', 'dd/MMMMM/yyyy: HH: mm: ss Z '), 'yyyy-MM-dd HH: mm: ss '),
From_unixtime (unix_timestamp ('03/May/2011: 00: 00: 00 + 100', 'dd/MMMMM/yyyy: HH: mm: ss Z '), 'yyyy-MM-dd HH: mm: ss '),
From_unixtime (unix_timestamp ('03/May/2011: 23: 59: 59 + 0800 ', 'dd/MMMMM/yyyy: HH: mm: ss Z '), 'yyyy-MM-dd HH: mm: ss ')
From
Stat_c_log
Where
1 = 1
And partkey = '000000'
And logType = 'inst _ cn_3'
And url rlike '/mx3/inst /.*'
Limit
10
;

2.
Select
From_unixtime (unix_timestamp ('02/May/2011: 00: 00: 00 + 000000', 'dd/MMMMM/yyyy: HH: mm: ss Z '), 'yyyy-MM-dd HH: mm: ss '),
From_unixtime (unix_timestamp ('02/May/2011: 23: 59: 59 + 0800 ', 'dd/MMMMM/yyyy: HH: mm: ss Z '), 'yyyy-MM-dd HH: mm: ss '),
From_unixtime (unix_timestamp ('03/May/2011: 00: 00: 00 + 100', 'dd/MMMMM/yyyy: HH: mm: ss Z '), 'yyyy-MM-dd HH: mm: ss '),
From_unixtime (unix_timestamp ('03/May/2011: 23: 59: 59 + 0800 ', 'dd/MMMMM/yyyy: HH: mm: ss Z '), 'yyyy-MM-dd HH: mm: ss '),
Round (unix_timestamp ('02/May/2011: 00: 00: 00 + 100', 'dd/MMMMM/yyyy: HH: mm: ss Z ') -4*3600)/(3600*24) * (3600*24*1000 ),
Round (unix_timestamp ('02/May/2011: 23: 59: 59 + 0800 ', 'dd/MMMMM/yyyy: HH: mm: ss Z ') -4*3600)/(3600*24) * (3600*24*1000)
From
Stat_c_log
Where
1 = 1
And partkey = '000000'
And logType = 'inst _ cn_3'
And url rlike '/mx3/inst /.*'
Limit
10
;

2012.03.01
1. Hive method registration class FunctionRegistry
2012.06.14
1. set hive. cli. print. header = true; you can set the output of hive shell.
2012.06.26
1. When hive cdh4b2 uses arichive to archive a table and uses select line to query the archived partition, A FileNotFoundException exception is reported.
The https://issues.apache.org/jira/browse/MAPREDUCE-2704 is because CombineFileInputFormat constructs new Path objects by converting an existing path to a URI, and then only pulling out the "path" part of it. this drops the scheme and host, which makes CombineFileInputFormat fail if the paths are on a filesystem other than the default one.
2012.07.16
1. explain extended hive_query; view the run.
2012.07.29
1. describe formatted mock; displays columns, location, params, and so on.
2./src/ql/src/test/queries/clientpositive/

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.