How to Insert a NULL Value in SQL
Inserting NULL values in SQL is a crucial skill for database management. This article explains the concept of NULL, how to insert it correctly, and common mistakes to avoid.
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Why Does Division Return 0 in SQL?
SQL division returning 0 can be frustrating for developers. This article explores the reasons behind this behavior and provides easy-to-implement fixes to ensure accurate calculations in your SQL queries.
SQL SELECT with 2 Decimal Places
Mastering SQL SELECT statements with 2 decimal places is crucial for precise data presentation. This article explores different techniques to format query results, ensuring your numbers are displayed consistently and accurately.
Select date from datetime in SQL
We'll cover various methods to extract, filter, and manipulate date data using SQL functions and queries. Whether you're working with SQL Server, MySQL, or other database systems, you'll find valuable insights to enhance your date-related SQL operations.
Understanding SQL Joins: The Key to Unlocking Relational Data
SQL joins are essential for combining data from multiple tables in relational databases. This article explores various join types (INNER, LEFT, RIGHT, FULL OUTER), their use cases, and advanced techniques like self joins and multiple joins, providing a comprehensive guide to mastering this crucial SQL skill.
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