SQL Data Types
Data types are used to represent the nature of the data that can be stored in the database table. For example, in a particular column of a table, if we want to store a string type of data then we will have to declare a string data type of this column.
Data types are mainly classified into three categories for every database.
- String Data types VARCHAR
- Numeric Data types INT
- Date and time Data types DATE
Course Video
YouTube Reference :
1) SQL Data Types in Hindi
2) SQL Data Types in English
SQL Data Types define the type of data that can be stored in a column, such as integers, text, dates, and more. Understanding them is essential for structuring databases effectively.
You can explore a comprehensive SQL Data Types guide at Iqra Technology Academy, which includes examples and explanations.
Yes, our website offers a free tutorial that explains SQL Data Types and how to use them in your database design and queries.
Common SQL Data Types include:
- Integer: For whole numbers.
- Varchar: For text of variable length.
- Date: For date values.
- Float: For decimal numbers.
Our SQL Data Types tutorial provides a step-by-step approach, including examples and best practices for database management.
- Use appropriate data types for efficiency and accuracy.
- Avoid using generic data types like TEXT or BLOB unless necessary.
- Regularly validate and clean data to prevent errors.
Yes, our platform includes tutorials in Hindi, helping native speakers learn SQL Data Types in their preferred language.
Choosing the right SQL Data Types ensures efficient storage and faster query execution. For instance, using INT instead of BIGINT for smaller numbers saves space and improves performance.
- Char: Fixed-length text. For example, Char(10) always uses 10 bytes.
- Varchar: Variable-length text. For example, Varchar(10) uses only the necessary storage.
Using the wrong data type can lead to issues like inefficient storage, incorrect query results, or errors during data insertion.
