Complete SQL Topics for Data Analysis
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Let's start with the first topic:
### 1. Introduction to SQL:
SQL (Structured Query Language) is a programming language designed for managing and querying relational databases. It provides a standardized way to interact with databases. The basic structure of an SQL query involves:
SELECT column1, column2 FROM table_name WHERE condition;- `SELECT
: Specifies the columns to retrieve.
- FROM: Specifies the table from which to retrieve the data.
- WHERE: Filters the rows based on a condition.
Example:
``sql
SELECT first_name, last_name FROM employees WHERE department = 'IT';`This query retrieves the first name and last name of employees working in the IT department.
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