topic Differences in Application Development and Automation Discussions

Differences

Former Member — Fri, 22 Jun 2007 08:41:07 GMT

Hi,

what is meaning of null and not null.

Thanks & regards,

sudhakar

Re: Differences

Former Member — Fri, 22 Jun 2007 08:43:36 GMT

Hi,

Null means which has no value

Not NUll means which has some value and is not empty. (Equivalent to <> 0)

Regards,

Suruchi

Re: Differences

Former Member — Fri, 22 Jun 2007 08:43:53 GMT

Hi,

NULL means it will check the initial value for the Data Object and NOT NULL means it is having the value other the default value for the DATA Object(Data TYPE)

(i)Undefined value cannot be explicitly stated that is there is no keyword called undefined whereas null value has keyword called null.

(ii)typeof undefined variable or property returns undefined whereas typeof null value returns object.

Regards

Sudheer

Re: Differences

varma_narayana — Fri, 22 Jun 2007 08:45:39 GMT

Hi,

NULL and NOT NULL are used in the context of database .

a NULL values represents a value that has no meaning. It is not 0 or SPACE.

Different databases handle the NULL values in different ways.

Reference variables in ABAP also contain NULL references when a Ref Variable is not Pointing to Any Object.

Regards.

Re: Differences

Former Member — Fri, 22 Jun 2007 08:50:39 GMT

Thanks for repiles.

Thanks & regards,

sudhakar