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1 lut 2010 · Here's a query to update a table based on a comparison of another table. If record is not found in tableB, it will update the "active" value to "n". If it's found, will set the value to NULL. UPDATE tableA LEFT JOIN tableB ON tableA.id = tableB.id SET active = IF(tableB.id IS NULL, 'n', NULL)"; Hope this helps someone else.
In this article, we would like to show you UPDATE query with IF condition in MySQL. Quick solution: UPDATE `table_name` SET `column_name` = IF(condition , if_true, if_false); Practical example. To show UPDATE query with IF condition, we will use the following users table:
20 wrz 2024 · The CASE() function is a way to implement the if-then-else logic in SQL. This function sequentially checks the provided conditions in the WHEN clauses and returns the value from the corresponding THEN clause when the first condition is satisfied.
19 kwi 2024 · If you want to get into roles like data analyst or data scientist, then you must master this advanced MySQL interview question to meet the demands of these positions. In this blog, I have compiled the Top 50 Advanced Interview Questions with answers to help you prepare for your upcoming interview.
22 lip 2024 · Here, we’ll cover 50+ MySQL Interview Questions with answers that are asked in Data Analyst/SQL Developer Interviews at MAANG and other high-paying companies.
These 100+ MySQL interview questions cover foundational to advanced topics, providing a thorough guide to help you succeed in your upcoming MySQL interview. Note : We have compiled all MySQL Interview Questions for your reference in a template format. Check it out now!
2 wrz 2023 · Prepare for your next interview with our comprehensive guide on SQL Case Expression. This article offers a detailed rundown of potential interview questions and answers to help you succeed.
