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Home / Archive for March 2015
Difference between COALESCE and ISNULL

Difference between COALESCE and ISNULL

10:24 PM Rohit Kumar Barik 0
COALESCE and ISNULL function is used to return the first non-null expression. Here is the few differences: 1. COALESCE is a ANSI st...
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How to Find Highest Salary from Table

How to Find Highest Salary from Table

10:28 AM Rohit Kumar Barik 0
This is the common interview question. We can do this two ways. 1. Co-related query 2. CTE Find the below example: declare @temp as...
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  • Unable to open Step output file. The step failed
    Unable to open Step output file. The step failed
    When you try to execute the job, The job will fail with error "Unable to open Step output file. The step failed" In this case th...
  • Transactions and Isolation Levels in SSIS
    Transaction options in SSIS Package: NotSupported  - Specifies that no transaction will be started for this container, and consequently, ...
  • Date Function: DateDiff()
    This is used to find the difference between two dates based on DatePart type The DATEDIFF() function returns the time between two dates....

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