John Hanrahan


Blogs

6 Can’t-Miss Basic SQL Courses to Learn in 2024: Your Fast Track to Data Mastery

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Ready to dive into the world of SQL? Whether you're dreaming of a lucrative...

Data-driven vs. Data-informed: Let’s Acknowledge the Truth

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This comic was retweeted into my timeline on Twitter (I refuse to call it...

Writing Parquet Files – #SQLNewBlogger

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Recently I’ve been looking at archiving some data at SQL Saturday, possibly querying it,...

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Forums

Fixing snapshot replication login error

By webrunner

Hello experts, We set up the Brent Ozar SQL Agent alerts, one of which...

is azure an option for multiple instances of dev engine and ssas?

By stan

Hi as you can see at https://www.sqlservercentral.com/forums/topic/test-sql-servers#post-4422832  we would really like multiple instances in...

Excel blobs & BCP extract commands...

By jellybean

Hi everyone, I have been asked to investigate storing Excel files in Sql Server...

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Question of the Day

Multiple Query Trace Flags

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);

See possible answers