我认为这适用于任何方言:
select (select count(*) from SalesLT.Customer where customerid < 55) as rows_before, (select count(*) from SalesLT.Customer where customerid > 55) as rows_after, CustomerID, FirstNamefrom SalesLT.Customerwhere CustomerID = 55

我认为这适用于任何方言:
select (select count(*) from SalesLT.Customer where customerid < 55) as rows_before, (select count(*) from SalesLT.Customer where customerid > 55) as rows_after, CustomerID, FirstNamefrom SalesLT.Customerwhere CustomerID = 55