Two tables can be merged in SQL either by rows or columns through a variety of commands, including inner join, left join, union, except and more. Here’s how with examples.
SQL PIVOT is a function that is used to create pivot tables and divide components of data into different columns and rows to make it easier to analyze. Learn how to do it.
Optimizing SQL for large data sets is an important step in managing the performance of your database. Follow these best practices to achieve faster data retrieval and efficiency.
Data science interviews encompass a variety of challenging questions to test your knowledge in machine learning, probability, SQL and more. Hone your skills with these questions.
SOQL is Salesforce’s proprietary programming language that’s used to query data directly from your Salesforce. SQL is a language used to query data from a general database. Here’s what you need to know.
