Learn how to connect to a MySQL database from Python. >>>
Monthly Archives: January 2025
How to Replace NULL With 0 in SQL
Learn cross-compatible and database-specific ways of replacing NULL values with zeros to avoid errors in calculations. >>>
Implementing Keyword Search in SQL
Learn how to implement keyword search in SQL for simple searches or full-text indexing. >>>
How to Limit the Number of Rows Returned by SQL Query After Ordering?
Learn how to apply the SQL LIMIT clause and combine it with other SQL mechanisms to get a limited subset of rows after sorting. >>>
Give All Permissions to a User in SQL
Learn how to grant all necessary permissions to a user in PostgreSQL, MySQL, and SQL Server. >>>
What Are Common Table Expressions (CTE) Used For?
A quick tutorial explaining common table expressions in SQL databases. They’re particularly useful for simplifying complex queries and organizing intermediate results in a structured manner. >>>
Why Window Functions Cannot Be Used in WHERE Clause in SQL
Sometimes, it would be handy to apply conditions on the window functions in the WHERE clause. Learn why that can’t be done and what workarounds you can use. >>>
How to Sum Two Columns in an SQL Query?
Learn about summing two columns using column expressions, aggregation, and window functions. >>>