When using SQL Server, you frequently need to work with data that represents intervals of time. For example, consider intervals representing sessions, contracts, projects, and so on. Tasks related to interval manipulation are typically quite intriguing, especially because coming up with efficient solutions isn't easy. Itzik Ben-Gan explains
2013-08-01
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I want to enable two trace flags, 4199 and 4137, for a single query. How should I do this:
-- A
SELECT
a.AddressID
, a.AddressLine1
, a.AddressLine2
, a.City
, a.StateProvinceID
, a.PostalCode
, p.FirstName
, p.LastName
FROM
Person.Address a
INNER JOIN person.Person AS p
ON p.rowguid = a.rowguid
WHERE
City = 'SEATTLE'
AND PostalCode = 98104
OPTION (QUERYTRACEON 4199, 4137);
-- B
SELECT
a.AddressID
, a.AddressLine1
, a.AddressLine2
, a.City
, a.StateProvinceID
, a.PostalCode
, p.FirstName
, p.LastName
FROM
Person.Address a
INNER JOIN person.Person AS p
ON p.rowguid = a.rowguid
WHERE
City = 'SEATTLE'
AND PostalCode = 98104
OPTION (QUERYTRACEON 4199, QUERYTRACEON 4137);
-- C
SELECT
a.AddressID
, a.AddressLine1
, a.AddressLine2
, a.City
, a.StateProvinceID
, a.PostalCode
, p.FirstName
, p.LastName
FROM
Person.Address a
INNER JOIN person.Person AS p
ON p.rowguid = a.rowguid
WHERE
City = 'SEATTLE'
AND PostalCode = 98104
OPTION (QUERYTRACEON 4199), (QUERYTRACEON 4137);
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