813 search results for "sql"

Using PostgreSQL in R: A quick how-to

February 1, 2016
By
Using PostgreSQL in R: A quick how-to

The combination of R plus SQL offers an attractive way to work with what we call medium-scale data: data that’s perhaps too large to gracefully work with in its entirety within your favorite desktop analysis tool (whether that be R or Excel), but too small to justify the overhead of big data infrastructure. In some … Continue reading...

Read more »

Data Manipulation in R: Beyond SQL

January 19, 2016
By
Data Manipulation in R: Beyond SQL

As a follow up to an article on using SQL in R, I just had an new article published at Simple Talk that considers ways to manipulate data in R that are cumbersome in SQL as well as ways to replace SQL statements with functional equivalents.

Read more »

A use of gsub, reshape2 and sqldf with healthcare data

December 18, 2015
By
A use of gsub, reshape2 and sqldf with healthcare data

Building off other industry-specific posts, I want to use healthcare data to demonstrate the use of R packages. The data can be downloaded here. To read the .CSV file in R you might read the post how to import data in R. Packages in R are stored in libraries and often are pre-installed, but reaching

Read more »

Tutorial: Data Science with SQL Server R Services

December 17, 2015
By
Tutorial: Data Science with SQL Server R Services

You may have heard that R and the big-data RevoScaleR package have been integrated with with SQL Server 2016 as SQL Server R Services. If you've been wanting to try out R with SQL Server but haven't been sure where to start, a new MSDN tutorial will take you through all the steps of creating a predictive model: from...

Read more »

Bringing the powers of SQL into R

December 11, 2015
By
Bringing the powers of SQL into R

One of the big flaw of R is that data loaded into it are stored in the memory (on the RAM) and not on the disk. As you are working in an analysis with large (big) data the processing time of simple and more complex functions can become very long or even crash your computer.

Read more »

Exploring Recursive CTEs with sqldf

December 1, 2015
By
Exploring Recursive CTEs with sqldf

by Bob Horton Sr. Data Scientist at Microsoft Common table expressions (CTEs, or “WITH clauses”) are a syntactic feature in SQL that makes it easier to write and use subqueries. They act as views or temporary tables that are only available during the lifetime of a single query. A more sophisticated feature is the “recursive CTE”, which is a...

Read more »

DataOps at SQL in the City

November 24, 2015
By
DataOps at SQL in the City

By Steph Locke Back in October, I had the pleasure of going along to the annual Redgate conference SQL in the City. This was a great day full of informative talks on how people are becoming more agile with their … Continue reading →

Read more »

Demo: R in SQL Server 2016

October 30, 2015
By

At the PASS Summit in Seattle this week, Microsoft's Jason Wilcox and Gopi Kumar demonstrated a SQL Server 2016 application that embeds R to predict what time you need to leave to catch a flight, given traffic, check-in time, and the likelihood of a flight leaving early or being delayed. The underlying preditive model was created with the RevoScaleR...

Read more »

Revolution R now available with SQL Server Community Preview

October 28, 2015
By
Revolution R now available with SQL Server Community Preview

The new SQL Server 2016 is now available as part of the Community Technical Preview program, and as presaged it embeds connectivity with the R language and the big-data statistical algorithms of Revolution R Enterprise. SQL Server 2016 includes two ways of calling R. The first is by embedding R code direcly in a SQL Stored Procedure, which can...

Read more »

Mango at SQL Relay!

October 22, 2015
By
Mango at SQL Relay!

By Steph Locke SQL Relay is an annual conference around SQL Server and related tech. It hits six to ten cities in the space of a fortnight, touring the country offering free and awesome training on SQL Server, Business Intelligence … Continue reading →

Read more »

Sponsors

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)