Today when creating a database I found to use select count(*) or save the count as a number are both available in this case.
So I’m wondering if there are some performance differences between them? How to choose?
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Today when creating a database I found to use select count(*) or save the count as a number are both available in this case.
So I’m wondering if there are some performance differences between them? How to choose?
Count(*) is most reliable becuase it gives correct count even when some rows are deleted from the table