How can I debug my SQL query that isn't returning the expected results?
First, can you share the SQL query you're using and describe what results you expect?
Sure, I'm using SELECT * FROM users WHERE age > 30, but it's returning no results.
Check if there are any users older than 30 in your database. You might also want to verify the data type of the 'age' column.
I see, the 'age' column is stored as a string. How can I convert it to an integer in my query?
You can use CAST or CONVERT functions. For example: SELECT * FROM users WHERE CAST(age AS INT) > 30.
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