Hacker

How to Master SQL Joins - Inner, Outer, Cross, and Self-Joins With Examples

Hello there! 👋 I'm Luca, a BI Developer with a passion for all things data, Proficient in Python, SQL and Power BI ...
IEEE

Document Similarity Self-Join with MapReduce

Abstract: Given a collection of objects, the Similarity Self-Join problem requires to discover all those pairs of objects whose similarity is above a user defined threshold. In this paper we focus on ...
GitHub

ASOF self-join on symbol column uses string keys instead of int ones

Is your feature request related to a problem? If you run the following query on demo, it'll use a string key in the hash table instead of a more efficient int one: ...
GitHub

Calculate number of weekdays between two dates.sql

INSERT INTO list_prices values (2, '2020-02-01', '2020-02-10',500) INSERT INTO list_prices values (3, '2020-03-01', '2020-03-10',400) INSERT INTO list_prices values ...
IEEE

GPU Accelerated Self-Join for the Distance Similarity Metric

Abstract: The self-join finds all objects in a dataset within a threshold of each other defined by a similarity metric. As such, the self-join is a building block for the field of databases and data ...