Blog Archives

Real-time data visualization using R and data extracting from SQL Server

July 23, 2018
By
Real-time data visualization using R and data extracting from SQL Server

In the previous post, I have showed how to visualize near real-time data using Python and Dash module.  And it is time to see one of the many ways, how to do it in R. This time, I will not…Read more ›

Read more »

R null values: NULL, NA, NaN, Inf

July 4, 2018
By
R null values: NULL, NA, NaN, Inf

R language supports several null-able values and it is relatively important to understand how these values behave, when making data pre-processing and data munging. In general, R supports: NULL NA NaN Inf / -Inf NULL is an object and is returned when an expression or function results in an undefined value. In R language, NULL … Continue reading R...

Read more »

Native scoring in SQL Server 2017 using R

May 28, 2018
By
Native scoring in SQL Server 2017 using R

Native scoring is a much overlooked feature in SQL Server 2017 (available only under Windows and only on-prem), that provides scoring and predicting in pre-build and stored machine learning models in near real-time.                                                                                              Icons made by Smashicons from www.flaticon.com is licensed by CC 3.0 BY   Depending on the definition of real-time, and what … Continue reading Native...

Read more »

Using R in SQL Server Reporting Services (SSRS)

March 4, 2018
By
Using R in SQL Server Reporting Services (SSRS)

SQL Server Reporting services (SSRS) is an outstanding tool for creating, deploying and managing paginated, mobile, KPI reports as well as Power BI reports. Tool provides simple way to share and get data insights in your corporate environment. (Photo source: Microsoft docs) Using the privileges of R language to enrich your data, your statistical analysis … Continue reading Using...

Read more »

R or Python? Python or R? The ongoing debate.

January 28, 2018
By
R or Python? Python or R? The ongoing debate.

On every SQL community event, where there could be a cluster of sessions dedicated to BI or analytics, I would have people asking me, “which one would you recommend?” or “which one I  prefer?” So, questions about recommendation and preferences are in my opinion the hardest one. And not that I would know my preferences … Continue reading R...

Read more »

SQL Saturday statistics – Web Scraping with R and SQL Server

November 13, 2017
By
SQL Saturday statistics – Web Scraping with R and SQL Server

I wanted to check a simple query: How many times has a particular topic been presented and from how many different presenters. Sounds interesting, tackling the problem should not be a problem, just that the end numbers may vary, since there will be some text analysis included. First of all, some web scraping and getting … Continue reading SQL...

Read more »

Robust IRIS Dataset?

October 25, 2017
By

This blog post was born out of pure curiosity about the robustness of the IRIS Dataset. Biological datasets do not need to be that big in comparison to datasets of customers, consumption, stock and anything that might be volatile. When still at the university, on one occasion I can remember, we were measuring the length … Continue reading Robust...

Read more »

Passing two SQL queries to sp_execute_external_script

July 25, 2017
By
Passing two SQL queries to sp_execute_external_script

Recently, I got a question on one of my previous blog posts, if there is possibility to pass two queries in same run-time as an argument to external procedure sp_execute_external_script. Some of the  arguments of the procedure sp_execute_external_script are enumerated. This is valid for the inputting dataset and as the name of argument @input_data_1 suggests, … Continue reading Passing...

Read more »

Installing R packages with rxInstallPackages in Microsoft R Server

June 14, 2017
By
Installing R packages with rxInstallPackages in Microsoft R Server

In MicrosoftML package comes – in my opinion – long anticipated function for installing R packages for SQL Server and Microsoft R Server. And, I am super happy. Last year, in one of my previous blog posts, I have been showing how to install R package from SSMS using sp_execute_external_script. Now, with new package MicrosoftML … Continue reading Installing...

Read more »

Performance differences between RevoScaleR, ColumnStore Table and In-Memory OLTP Table

April 28, 2017
By
Performance differences between RevoScaleR, ColumnStore Table and In-Memory OLTP Table

Running *.XDF files using RevoScaleR computational functions versus have dataset available in Columnstore table or in In-Memory OLTP table will be focus of comparison for this blog post. For this test, I will use the AirLines dataset, available here. Deliberately, I have picked a sample 200 MB (of 13GB dataset) in order to properly test … Continue reading Performance...

Read more »

Search R-bloggers


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)