Distinct Queries (learnsqlonline.org)
DISTINCT queries in SQL allow us to retrieve unique values from a column or a combination of columns in a table. By eliminating duplicates, we can obtain a clean and…
Continue readingAll SQL content from my online portfolio
DISTINCT queries in SQL allow us to retrieve unique values from a column or a combination of columns in a table. By eliminating duplicates, we can obtain a clean and…
Continue readingAggregate functions in SQL enable us to perform calculations on sets of rows and return a single value as the result. These functions can summarize data, calculate statistics, and answer…
Continue readingRepresentational State Transfer (REST) APIs have become the backbone of modern web development, enabling seamless communication between different software systems over the internet. At its core, a REST API provides…
Continue readingThe HAVING statement is similar to the WHERE clause but operates on grouped data. It allows us to filter the results of a GROUP BY query based on conditions applied…
Continue readingDevOps is a cultural and professional movement that emphasizes collaboration, communication, and integration between software development (Dev) and IT operations (Ops) teams. At its core, DevOps aims to streamline the…
Continue readingWhen starting any good SQL learning journey, you may quickly realise that once you’ve started to understand MySQL, all of a sudden there are 6 or 7 other types of…
Continue readingStructured Query Language (SQL) stands as the backbone of modern data management, empowering organizations to store, retrieve, and manipulate vast amounts of structured data with precision and efficiency. From database…
Continue readingThe ORDER BY clause in SQL is used to sort the result set based on specified columns. It allows us to arrange data in ascending or descending order. Sorting query…
Continue readingThe GROUP BY clause in SQL is used to group rows from a table based on one or more columns. It enables us to aggregate data and perform calculations such…
Continue reading