Learn: What is SQL?

SQL stands for Structured Query Language. It is the standard language used to communicate with relational databases and perform various operations such as data manipulation, on the data stored within them.

To manage, update or query in a relational database system, SQL is often used.

Features of SQL:

Data Querying:

• SELECT Statement: Retrieves data from one or more tables.
• WHERE Clause: Filters records based on specific conditions.
• JOIN Operations: Combines rows from two or more tables based on related columns.

Sample Code:

SELECT column1, column2
FROM table_name
WHERE condition;

Data Manipulation:

• INSERT INTO: Adds new rows of data into a table.
• UPDATE: Modifies existing data within a table.
• DELETE: Removes rows from a table.

Sample Code:

UPDATE table_name
SET column1 = value1, column2 = value2, ...
WHERE condition; 

Data Definition:

• CREATE TABLE: Defines a new table and its structure.
• ALTER TABLE: Modifies an existing table’s structure (e.g., adding or dropping columns).
• DROP TABLE: Deletes a table and all its data.

Sample Code:

DROP TABLE table_name; 

Conclusion

SQL is an essential tool for working with relational databases as it is a widely accepted standard. It enables users to interact with data in a structured and efficient manner. Whether you’re developing applications, managing multiple databases, or performing data analysis, SQL provides you with the functionality needed to handle complex data tasks effectively. Till then, Hope you learn a byte!