@JulianI agree, I also had to read the paragraph several times to understand what Eric was going for - presumably because of my knowledge with python (well and scheme to some lesser degree). Personally treating empty collections and null as implicitly null is generally the behavior one would ...
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IsNull returns True if expression is Null, that is, it contains no valid data; otherwise, IsNull returns False.The Null value indicates that the variable contains no valid data. Null is not the same as Empty, which indicates that a variable has not yet been initialized. It is also not ...
I put a breakpoint on the line to check the string variable when it was hit and it was '“nothing”. The breakpoint should not have been hit since the previous line was “If ‘string’ <> Nothing Then” I found that when I replace ‘Nothing’ with ‘vbNullString’ th...
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Whatever, here’s your empty result set.” IS NOT NULL vs != And now, IS NOT NULL versus != NULL. select id, mychar FROM #tmp WHERE mychar IS NOT NULL; select id, mychar FROM #tmp WHERE mychar != NULL; The IS NULL query returns two rows, as it should: id mychar 1 a 2...
WHERE (WineID BETWEEN 16 AND 22) AND (Body IS EMPTY) ORDER BY idRec The results of this example would the same as the previousIS_EMPTYexample. IS_NOT_EMPTY function TheIS_NOT_EMPTYfunction takes a set and returnsTRUEif that set is not empty. The syntax of theIS_NOT_EMPTYfunction is...
This command starts a proxy agent on the machine, and listens to ports 80 and 443 at the same time. It can be used as a normal proxy, or directly resolve the domain name that needs to be proxyed to the IP of this machine.If there is a upstream agent, then refer to the above ...
Perform the following operations, then install the standby MPU and run the save command to ensure that the configurations on the active and standby MPUs are the same. Connect your PC to the device through the console port. Restart the device. When the "Press Ctrl+B to enter BOOT menu" ...
The Blank function returns a blank value. Use this to store a NULL value in a data source that supports these values, effectively removing any value from the field.IsBlankApplies to: Canvas apps Model-driven appsThe IsBlank function tests for a blank value or an empty string. The test ...