September 14, 2024

Select data from table using SQL

Select statement is one of the most important SQL statement. By making an appropriate select query, we can retrieve data we need. It allows you to specify which columns of a table we want to get, apply filters, sort the results, and more.

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September 14, 2024

Perform arithmetic operation in SQL

SQL allows you to perform arithmetic operations using standard operators like +, -, *, and /. However, these operations are restricted to working on values within the same row, meaning you can only combine columns from a single row.

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September 13, 2024

Update data in table using SQL

Update SQL statement is very important in DML (data manipulation language). We can update selective or all records from table by using update SQL statement.

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September 13, 2024

Delete data in table using SQL

Delete SQL statement is also very important in DML (data manipulation language). We can remove selective or all records from table by using delete SQL statement.

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September 13, 2024

Insert data in table using SQL

Insert SQL statement is very important. We can also say that, this is the initial step where we insert new data into the tables in DML (data manipulation language). In this tutorial we will define insert statement with two variations.

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September 13, 2024

Create Table in SQL

Table creation is very important part in SQL. Without table creation we cannot store data in database. To create a table in SQL, we can use the CREATE TABLE statement, which defines the structure of the table, including table name & column names and their data types.

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August 23, 2024

Logical Operators in SQL

Logical operators in SQL are powerful tools that allow you to combine multiple comparison operators within a single query. They allow you to combine multiple conditions within a query, making it possible to perform more complex searches and data retrieval. Each logical operator has its own unique function and purpose, so it's essential to understand how they work individually. In the following les

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August 23, 2024

Comparison operators in SQL

Comparison operators are fundamental components of SQL that enable users to compare numerical values effectively. Understanding how to use these operators is essential for constructing accurate queries and performing data analysis. By leveraging these operators, you can filter, sort, and manipulate data to gain valuable insights.

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August 23, 2024

What is a NULL Value in SQL?

A null value signifies the absence of data or an unknown value. It is distinct from zero, an empty string, or any other placeholder that may represent a value. In essence, a null value indicates that no information has been provided for that particular field.

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August 17, 2024

What is SQL

SQL (Structured Query Language) is a powerful programming language specifically crafted for managing and manipulating data in relational databases. It offers a comprehensive set of functions that enable users to query, update, and organize data with precision.

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