From the course: Complete Guide to SQL for Data Engineering: from Beginner to Advanced
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Logical errors in SQL - SQL Tutorial
From the course: Complete Guide to SQL for Data Engineering: from Beginner to Advanced
Logical errors in SQL
- [Instructor] Logical error in SQL are mistakes that happen when your instruction to the database don't achieve what you intended. It's like telling someone to make a sandwich, but instead of putting the peanut butter and jelly together, they put peanut butter and the mayonnaise. Their steps may be correct, but the result is not what you wanted. Logical errors in SQL refers to mistakes or flaws in the logic of SQL query that lead to unintended results. Unlike syntax errors which are caught by the SQL parser and prevent the query from executing, logical errors allows the query to run, but the result is incorrect, and it is not what you are expecting out of the query. These kind of errors sometimes is more challenging to identify and resolve because they often requires a deep understanding of both the data and the problem statement that you're trying to solve. Let's talk about some common types of logical errors in SQL…
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