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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.

The Key to Successful Indexing

An index is a schema element that includes a record for each content that arrives in the indexed column of the database table or cluster and gives a high-speed path to rows. There are many types of indexes such as Bitmap indexes, Partitioned indexes, Function-based indexes, and Domain indexes. Accurate indexing requires that the Primary Key column contains only unique values for this purpose. This guarantees that JOIN statements will maintain integrity and produce valid matches. Let’s create our Customers table again and establish the ID column as the Primary Key:

CREATE TABLE Customers (
ID int NOT NULL,
Name varchar(80) NOT NULL,
PRIMARY KEY (ID)
);

We can extend the functionality of the Primary Key so that it automatically increments from a base. Change the ID entry above to add the AUTO_INCREMENT keyword as in the following statement:

ID int NOT NULL AUTO_INCREMENT

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

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