MySQL 5.7: implementing using CASE statements in SELECT causing unexpected results
I'm sure I'm missing something obvious here, but I'm working with an scenario with a query that uses a `CASE` statement within a `SELECT` in MySQL 5.7, and it’s not returning the expected results for certain conditions... My query looks like this: ```sql SELECT id, name, CASE WHEN status = 'active' THEN 'Active User' WHEN status = 'inactive' THEN 'Inactive User' ELSE 'Unknown' END as user_status FROM users; ``` The `status` column contains values like 'active', 'inactive', and some NULLs. However, I'm noticing that when the `status` is NULL, instead of returning 'Unknown', it’s treating those records as if they don't exist in the result set at all. I tried adding a condition to explicitly check for NULL values: ```sql SELECT id, name, CASE WHEN status IS NULL THEN 'Unknown' WHEN status = 'active' THEN 'Active User' WHEN status = 'inactive' THEN 'Inactive User' ELSE 'Unknown' END as user_status FROM users; ``` This still doesn’t return any results for users with a NULL status. I've also checked if any filters are applied elsewhere in my application code, but there seem to be none. I’m confused why NULLs are being excluded even though they should return 'Unknown'. Is there something specific to MySQL 5.7 that might be affecting this behavior, or am I missing something in my query? Any help would be greatly appreciated! My team is using Sql for this desktop app. Any pointers in the right direction?