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How to use Print & RaiseError in TSQL

Posted on 2012-04-03
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Last Modified: 2012-06-27
Hi,
I am writing some TSQL procedures to extract data.. I wish to know progress within my procedure  so using print stmt. I have used dbms_output.print_line under Oracle SQL. I though print here does the same job but I am not receiving any output at SSMS.

Do I need to use raiseerror? Please explain with examples.

Thanks
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Question by:crazywolf2010
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Expert Comment

by:Scott Pletcher
ID: 37803442
In general PRINT will work.

Keep in mind, if you PRINT null, it will look like a blank line (you won't actually see any output).
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Author Comment

by:crazywolf2010
ID: 37827369
Anyone who can send me an TSQL examples?
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LVL 69

Expert Comment

by:Scott Pletcher
ID: 37827883
--Example:

DECLARE @varchar_var varchar(40)
DECLARE @varchar_var2 varchar(40)
DECLARE @int_var int

PRINT @int_var
PRINT @varchar_var + ' / ' + @varchar_var2
PRINT @varchar_var + ' / ' + CAST(@int_var AS varchar(10))


You can directly PRINT any single variable.

You can directly PRINT a concatenation of varchar variables.

If you want to concatenate numeric values for PRINTing, you must explicitly convert them to [var]char.
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Author Comment

by:crazywolf2010
ID: 37827980
Hi,
I ran above code but there were no ouput at MS SQL server studio. Where does print will print?
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LVL 69

Expert Comment

by:Scott Pletcher
ID: 37828032
Shows in the window below the query.  When there's output, the output/results window should be shown, unless it's hidden.  You can press Ctrl-R to toggle the results window view on/off.
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Author Comment

by:crazywolf2010
ID: 37828693
Please see attached snap here.
MSSM.gif
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LVL 69

Expert Comment

by:Scott Pletcher
ID: 37828942
Click on the "Results" tab to move the focus off the "Messages" tab.
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Author Comment

by:crazywolf2010
ID: 37831394
There is no results tab displayed. I do see results for other queries but not for PRINT queries.
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LVL 75

Expert Comment

by:Anthony Perkins
ID: 37832174
1. The PRINT statements show on the Messages tab and not the Results tab.
2. The reason you are not getting any output is because all three values result in NULLs
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Accepted Solution

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Anthony Perkins earned 500 total points
ID: 37832190
See for yourself (fix the obvious typo in xDECLARE):
xDECLARE @varchar_var varchar(40)
xDECLARE @varchar_var2 varchar(40)
xDECLARE @int_var int

SET @varchar_var = 'Test String'
PRINT '@int_var: ' + ISNULL(CAST(@int_var AS varchar(10)), 'NULL')
PRINT '@varchar_var +  /  + @varchar_var2: ' + ISNULL(@varchar_var + ' / ' + @varchar_var2, 'NULL')
PRINT '@varchar_var +  /  + CAST(@int_var AS varchar(10)): ' + ISNULL(@varchar_var + ' / ' + CAST(@int_var AS varchar(10)), 'NULL')

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