I want my client application to set clienthostname as [NULL]

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I have MFC application, how can I set

clienthostname as [NULL]

. I tried below code, now working.

I used clienthostname="\0" in my connection string, it does not set value as NULL in database using sybase 16 SP3 driver.

However when i use sybase 15.5 driver, it does set value to NULL for hostname.

What I have tried:

had tried couple of solutions mentioned on net . nothing working. sybase driver 16 SP3 seems to have different behavior.

Posted 26-Aug-19 22:31pm

Aravhere

Updated 27-Aug-19 4:54am

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Richard MacCutchan 27-Aug-19 4:47am

That looks like a sybase problem; try their support forum.

Aravhere 27-Aug-19 4:57am

Initially,I had same thought but want to know if theer is any way to set clienthostname as NULL in MFC using sybase driver 16 SP3.

Richard MacCutchan 27-Aug-19 5:13am

Your code statement .clienthostname="\0" sets the variable to a pointer to an empty string. If you want it to be NULL, then use NULL, or nullptr.
But you need to check the sybase documentation to see if that is valid.

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Gerry Schmitz · Answer 1 · 2019-08-27T04:55:00

Maybe you're going about it wrong.

Quote:
The set command includes options that allow you to assign each client an individual name, host name, and application name. This is useful for differentiating among clients in a system where many clients connect to Adaptive Server using the same name, host name, or application name.

The partial syntax for the set command is:

set [clientname client_name | clienthostname host_name | clientapplname application_name]

http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.dc36271_1251/html/blocks/X26384.htm[^]