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Hope this post finds you in good health and spirit.

Structured Query Language, abbreviated as SQL, is a domain-specific language used in programming and designed for managing data held in a relational database management system, or for stream processing in a relational data stream management system.

An good developer must be familiar with a few commands in SQL because it is such a strong development tool. The SQL queries listed below are important for coding and optimization. Almost every system that interacts with a SQL database will be affected by each query in the SQL tutorial.

Data Manipulation Using SUM

SUM calculates the total of the attribute that is given to it as an argument. SUM is an aggregate function and it calculates the sum of all the distinct values. and the sum of all the duplicate values.

SELECT SUM(Salary)FROM Employee WHERE Emp_Age < 30;

So, that’s all in this blog. I will meet you soon with next stuff .Have a nice day !!!

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