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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 COUNT

This query displays the total number of customers by counting each customer ID. In addition, it groups the results according to the country of each customer. In count, if users define DISTINCT, then they cal also define the query_partition_clause. This clause is a part of the analytic clause, and the other clauses such as order_by_clause and windowing_clause are not permitted. Syntax: SELECT COUNT(colname) FROM table name;

SELECT COUNT(CustomerID), Country FROM Customers GROUP BY Country;

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

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