Top 10 SQL Functions Every Developer Should Know

  SQL (Structured Query Language) functions are essential tools that every developer should be familiar with. They allow for efficient data manipulation, aggregation, and retrieval, making database interactions more powerful and flexible. In this blog post, we will explore the top 10 SQL functions that are indispensable for any SQL developer. 1. COUNT()           Definition : The COUNT() function returns the number of rows that match a specified criterion. Common Scenarios : Counting the total number of rows in a table, counting non-null values in a column. 2. SUM()          Definition : The SUM() function calculates the total sum of a numeric column. Common Scenarios : Calculating total sales, aggregating total expenses. 3. AVG()            Definition : The AVG() function calculates the average value of a numeric column. Common Scenarios : Finding the average salary, calculating the average price. 4. ...