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Greg Rahn gregrahn

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View qgen.py
import time
import sys
import os
cmd = "./dsqgen -QUIET Y -DIALECT netezza -SCALE 100000 -TEMPLATE crash.tpl -DIRECTORY ../query_templates"
template1 = '''
define C= ulist(random(1, {}, uniform),5);
select
View cloudera-impala-odbc.rb
cask 'cloudera-impala-odbc' do
version '2.6.8.1008'
sha256 'dbc9a460004b93b39c1d9bfedf2c181226ee629e59c84774708ffd8fd4585a8d'
url "https://downloads.cloudera.com/connectors/ClouderaImpala_ODBC_#{version}/macOS/ClouderaImpalaODBC.dmg"
name 'Cloudera ODBC Driver for Impala'
homepage 'https://www.cloudera.com/downloads'
pkg 'ClouderaImpalaODBC.pkg'
View pg-unpivot.sql
create table rj (l1 int, l2 int, l3 int);
insert into rj values (0,0,0);
insert into rj values (1,1,1);
insert into rj values (1,0,1);
insert into rj values (0,1,0);
insert into rj values (1,0,0);
select * from rj;
l1 | l2 | l3
View query_0.sql
-- TPC-DS v2.11.0
-- ./dsqgen -DIRECTORY ../query_templates -INPUT ../query_templates/templates.lst -VERBOSE Y -QUALIFY Y -SCALE 10000 -DIALECT netezza -OUTPUT_DIR /tmp
-- start query 1 in stream 0 using template query1.tpl
with customer_total_return as
(select sr_customer_sk as ctr_customer_sk
,sr_store_sk as ctr_store_sk
,sum(SR_FEE) as ctr_total_return
from store_returns
,date_dim
View hms-queries.sql
--
-- list db/table/num_rows for tables with stats
--
SELECT
DBS.NAME AS DB_NAME,
TBLS.TBL_NAME AS TABLE_NAME,
TABLE_PARAMS.PARAM_VALUE as NUM_ROWS
FROM DBS
JOIN TBLS USING (DB_ID)
JOIN TABLE_PARAMS USING (TBL_ID)
@gregrahn
gregrahn / 1-tpcds-query92.sql
Last active Apr 17, 2017
When switching from the legacy Oracle top-n syntax using rownum to the ANSI/ISO SQL:2008 fetch first syntax, the WinMagic SQL transformation is lost.
View 1-tpcds-query92.sql
-- Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
-- Using 1GB TPC-DS
-- Table DDL: https://raw.githubusercontent.com/gregrahn/tpcds-kit/master/tools/tpcds.sql
-- WinMagic paper: "WinMagic: subquery elimination using window aggregation"
-- https://pdfs.semanticscholar.org/0bfa/e505ad588d00d4b204acf8ba4b5646eac244.pdf
alter session set nls_date_format = 'YYYY-MM-DD';
-- start query 1 in stream 0 using template query92.tpl
View keybase.md

Keybase proof

I hereby claim:

  • I am gregrahn on github.
  • I am gregrahn (https://keybase.io/gregrahn) on keybase.
  • I have a public key whose fingerprint is 9C32 D323 4E55 8113 FE4B CFEB FA4D 0C79 A267 C6C4

To claim this, I am signing this object:

@gregrahn
gregrahn / inmap.sh
Last active Aug 29, 2015
download and merge all the tiles to make a high resolution LinkedIn InMap
View inmap.sh
# 1) get your inmap from http://inmaps.linkedinlabs.com/
# 2) zoom all the way in and note the url for the individual tiles (I used Charles Proxy to do this,
# but right/control-click, "Inspect Element", "Network" tab, then reload page, also works.)
# 3) download your tiles
# 4) merge the tiles into column-wise strips
# 5) merge the column-wise strips into the final high resolution image
# download the individual tiles
# my inmap happended to be 15 tiles wide and 12 tiles tall
View tez-crash.sql
hive> set hive.execution.engine=tez;
hive> select split('I crash Tez',' ');
Query ID = hue_20140718150505_1eafc45c-6e2b-49f1-9d72-0ec737a72377
Total jobs = 1
Launching Job 1 out of 1
Status: Running (application id: application_1405217363240_0016)
Map 1: -/-
View indexes.sql
create unique index person_pk on person(person_id);
create index person_n1 on person(date_id);
create unique index calendar_pk on calendar(date_id) ;