Hello,

I've seen on different database designs two main filters approaches in order to select based on a "status" field: a status based on char(1) and status based on number.

For example,

1rst approach:
SELECT * FROM table WHERE status = 'A'

2do approach:
SELECT * FROM table WHERE status = 1

The question is: What approach is the best in order to improve query performance??

Best regards,

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