• Interests: Vedic Maths

Technical Article

Locate primary key - foreign key relations

Recently one of my friend was doing some investigation in a new/unknown database and had really hard time locating the primary key – foreign key relations. Like it’s really tough to locate these relations when not enforced at database level in terms of primary key and foreign key constraints. But generally all database developers keep […]

4.14 (7)

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2011-09-14 (first published: )

2,736 reads

Technical Article

Combine multiple rows into single output

We can use this function to combine multiple rows into single one. Generally to create comma separated list for each unique item. So this can create comma separated product list for any given category. The same can be used to make a list of items in a given order.ThanksMohit Nayyarhttp://mohitnayyar.blogspot.com/

5 (3)

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2007-09-14

3,757 reads

Technical Article

To Get Latest SQL Job Status

This query will give you the current job status of all scheduled jobs on sql server. Just by using sysJobs, and sysJobHistory table you will get to know the details about the last status of the scheduled jobs, irrespective of their status like failed, successful, or cancelled.Note: You must have admin right on MSDB database […]

3.54 (13)

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2003-09-04

8,472 reads

Technical Article

Error Handling in SQL Server (like Visual Basic)

Using this technique you can do error handling in SQL Server using the same way you do in Visual Basic (most of it). Just put your SQL Statement in exec('SQL Command') and make use of @@Error to get error information and put your error handling code in If block.Mohit NayyarMCP (.Net), MCSD, MCDBA

1 (1)

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2003-04-17

936 reads

Technical Article

To get Table and column name for Primary Keys.

This query will give you the table name and column name on which you have defined the primary key. You can use this to get columns on which the primary key is based. I find it very useful when i need to define the FK relationship for other tables in PowerDesigner. Try to do the […]

5 (2)

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2003-04-16

1,591 reads

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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