SQL Tutorial ? Learn Some Advanced Queries online

Posted by Fresh2Refresh on February 26th, 2019

SQL (Structured Query Language) is essential for developers as well as testers to build and test dynamic websites. Database servers are becoming more and more powerful by getting involved in computations rather than just passively storing data. SQL, being the most preferred database language is not just easy but best option to store and manipulate millions of records in quick time.

SQL (Structured Query Language) is essential for developers as well as testers to build and test dynamic websites. Database servers are becoming more and more powerful by getting involved in computations rather than just passively storing data. SQL, being the most preferred database language is not just easy but best option to store and manipulate millions of records in quick time. SQL can be learned easily through SQL tutorial on multiple websites. While the basic queries is taught in school/college, here are some advanced queries often used in SQL -

• The GROUP BY statement is often used with aggregate functions (COUNT, MAX, MIN, SUM, AVG) to group the result-set by one or more columns.
• A JOIN clause is used to combine rows from two or more tables, based on a related column between them.
• The ORDER BY keyword is used to sort the result-set in ascending or descending order. The ORDER BY keyword sorts the records in ascending order by default. To sort the records in descending order, use the DESC keyword

Learn more queries online through SQL tutorial >>> https://fresh2refresh.com/sql-tutorial/