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Query related to MAX() function

 
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anaresh

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Joined: 01 Aug 2008
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Location: Hyderabad

PostPosted: Fri Mar 13, 2009 9:42 am    Post subject: Query related to MAX() function
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Hi,

I have a FIELD in a table which is defined as INT.
Logic in program is it is getting MAX(FIELD) in to a S9(9) COMP variable.

Initially when no rows are there in table, what will the function return?
Checking this I have to move '1' to this field.

Thanks,
Naresh.
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anandinmainframe

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Joined: 31 May 2007
Posts: 171
Location: India

PostPosted: Fri Mar 13, 2009 9:57 am    Post subject: Reply to: Query related to MAX() function
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Hi anaresh ,
The sqlcode will return 100.
check for the sqlcode if it is 0 then move wharever you have to
if it is 100 move 1 to the field.
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anaresh

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PostPosted: Fri Mar 13, 2009 10:00 am    Post subject:
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Thanks Anand...
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Bharath Bhat

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PostPosted: Fri Mar 13, 2009 11:38 am    Post subject:
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The function will return a null. You can check the null indicator also. But, the column should be not null.
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ajeshrn

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Joined: 25 Mar 2009
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PostPosted: Thu Apr 09, 2009 11:08 am    Post subject: Reply to: Query related to MAX() function
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Hi,

Thats true if the column is not defined with NOT NULL ,then if null is being passed to the application hist variable it will be returning a SQLCODE -305.As Bharat told we can handle this situation through NULLINDICATOR.

Thanks
Ajesh R N
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