Tag: Table

Feed: R-bloggers. Author: R Views. Two hundred twenty-two new packages made it to CRAN in May, and it was more of an effort than usual to select the “Top 40”. Nevertheless, here they are in nine categories, Computational Methods, Data, Machine Learning, Mathematics, Medicine, Science, Statistics, Utilities and Visualization. Computational Methods dde v1.0.0: Implements a Dormand-Prince algorithm for solving “non-stiff” differential equations. See the vignette for examples. rTRNG v4.20-1: Implements an interface to Tina’s Random Number Generator C++ Library, and provides examples of how to use parallel RNG with RcppParallel. See Bauke (2018) for implementation details and the vignette for ... Read More

Feed: Planet PostgreSQL. Recently I gave a "deep dive" talk on the topic of PostgreSQL security, and I wanted to capture one part of that content into a blog since this format is both better for making that content stand on its own and for expanding on it a bit.Specifically, in this two-part blog, we will cover a PostgreSQL extension that I wrote called crunchy_check_access -- the motivation behind it and what it does -- and then use that extension to probe and understand the consequences of the default, out of the box, security of PostgreSQL. We will also examine ... Read More

Feed: Planet MySQL; Author: Krunal Lathiya; SQL BETWEEN AND IN OPERATOR Tutorial With Example is today’s topic. SQL between operator is used for selecting values within the specified range. The values can be text, date, numbers, or other SQL datatypes that can be used with select, update, insert, or delete statement. The records will be returned only if there exists any value within the range of values as specified in statements. SQL between operator is inclusive, i.e., both starting and end points values are included. Content Overview SQL BETWEEN AND IN OPERATOR The SQL BETWEEN operator is used with a WHERE ... Read More

Feed: Planet MySQL; Author: Vitess; For many large companies seeking help with horizontal scaling, Vitess’ value proposition is easily understood; running stateful workloads at astronomical scale is a hard problem that Vitess has boldly solved in the past. However, for businesses that aren’t hitting the performance limitations of standard MySQL, it may seem difficult to justify placing seemingly complex middleware in your data path with no immediate reward. I’m here to show you why unsharded Vitess is not just a pre-optimization for future horizontal scaling - it provides many upgrades to the MySQL experience.Query OptimizationNo matter how advanced our new ... Read More

Feed: Neo4j Graph Database Platform. Author: Jocelyn Hoppa. “There are huge performance concerns running certain queries on data that is more connected,” said Michael Wytock, CEO of Coshx.Technology consulting firm Coshx uses Neo4j whenever it sees a lot of database JOINs in a client’s current architecture, knowing performance will be greatly improved.In this week’s five-minute interview (conducted at GraphConnect 2018 in NYC), we discuss why Coshx chose Neo4j and how a graph data model makes it easier to communicate with business stakeholders and solve difficult engineering problems.How do you use Neo4j?Michael Wytock: We used Neo4j in a couple of client ... Read More

Feed: Featured Blog Posts - Data Science Central. Author: steve miller. I recently downloaded a 5 year Public Use Microsample (PUMS) from the latest release of the American Community Survey (ACS) census data. The data contain a wealth of demographic information on both American households and individuals (population). The final household and population data stores are quite large for desktop computing: household consists of almost 7.5M records with 233 attributes, while population is just under 15.8M cases and 286 variables. In addition to enabling a wealth of demographic analyses, these census data are quite suitable for performance testing functions to ingest, munge, ... Read More

Feed: Recent Announcements. AWS GovCloud (US) is Amazon's isolated cloud infrastructure and services designed to address specific regulatory and compliance requirements of US Government agencies, as well as contractors, educational institutions, and other US customers that run sensitive workloads in the cloud.  For a full list of AWS Regions where Fargate is available, please visit our Region table ... Read More

Feed: Planet MySQL; Author: FromDual; It is Saturday night at 23:19. Time to go to bed after a hard migration day. Just a last clean-up query before finishing: Tap tap tap. Enter! - Oops! SQL> UPDATE prospect_lists_prospects SET prospect_list_id = '73ae6cca-7b34-c4a3-5500-5d0e2674dbb6'; Query OK, 4686 rows affected (0.21 sec) Rows matched: 5666 Changed: 4686 Warnings: 0 A verification query to make sure I am in the mess: SQL> SELECT prospect_list_id, COUNT(*) FROM prospect_lists_prospects GROUP BY prospect_list_id; +--------------------------------------+----------+ | prospect_list_id | count(*) | +--------------------------------------+----------+ | 73ae6cca-7b34-c4a3-5500-5d0e2674dbb6 | 5666 | +--------------------------------------+----------+ And certainly I did not enter the START TRANSACTION; command before. So ... Read More

Feed: Microsoft Azure Blog. Author: Microsoft Azure. News and updates Announcing native backup for SQL Server 2008 end of support in Azure With SQL Server 2008 and 2008 R2 approaching end of support, many customers are moving to Azure. They see this milestone as an opportunity to reimagine and transform their infrastructure with the power of cloud computing. Azure’s offer of free extended security updates for three years provides a new lease on life to these servers while giving organizations time to upgrade. Learn how easy it is to protect your SQL databases in Azure. Microsoft and Truffle partner to ... Read More

Feed: Big Data Made Simple. Author: Guest. If you were an Amazon seller, would you want to know the listing price of a product of all competitors? If you don’t have direct access to the Amazon database, then you’re out of luck. You’d have to browse and click through every single listing. Just for constructing a table of sellers and prices. This is where a web scraping tool comes in handy. It automatically downloads your desired information, including product names, sellers’ names, prices etc.However, web scraping that requires coding skill can be painful for professionals in IT, SEO, marketing, e-commerce, ... Read More