Basic Difference of Join and Subquery
A JOIN is used to combine data from multiple tables into a single result set, while a subquery is used to filter data from a single table. Joins are based on the logical connections between tables, whereas subqueries are also referred to as nested or inner queries.
Joins are particularly beneficial for normalized databases and can simplify queries, while subqueries are helpful when dealing with complex conditions or when data needs to be retrieved from a single table based on the results of another query.
Is Join Faster Than A Subquery
Generally, joins tend to be faster than subqueries for retrieving query results than Subqueries. This is because joins use a single query to replace multiple ones, reducing the processing load on the database. However, subqueries can be faster in certain situations, particularly when they replace complex joins or unions.