Help in Data types behavior

[Former Member]

HI All

I have some data types that i dont know what are the behavior of them

I need to know that for all the following data types

Data types such as

byte -  Unsigned 8-bit integer value
guid - a 16-byte (128-bit) unique identifier value
SByte -  a signed 8-bit integer value
Int16	a  - signed 16-bit integer value
Int32	a -  signed 32-bit integer value
Int64	a -  signed 64-bit integer value
Single - a floating point number with 7 digits precision

I want to know if user want to create such of data types

does he need to specify a length and decimal for example .

for instance to string data type user dont need to specify anything

but for char ne need to specify a length ,etc .

I search for this data type in the help

and i found this following links but it's help for this data types .

http://help.sap.com/saphelp_nw04/helpdata/en/fc/eb2fd9358411d1829f0000e829fbfe/content.htm

http://help.sap.com/saphelp_crm/helpdata/en/fc/eb3138358411d1829f0000e829fbfe/content.htm

Thanks

Alex

Edited by: Alex Dean on Oct 13, 2010 3:14 PM

[Former Member]

In almost 12 years in SAP, I've never declared any of these, and I doubt you will either. But, may I suggest ABAP Help (F1) on the data: statement....should provide a wealth of information about the various data types.

[MarcinPciak]

[These predefined types|http://help.sap.com/abapdocu_70/en/ABENBUILT_IN_TYPES_DICTIONARY.htm] are only ones available and can only be used when typing data element in DDIC , but not directly in ABAP program.

Moreover what do you need such huge memory allocation for (i.e int64) ? I can't even imagine what max value would that be.

If you want to create dynamically certain data type (local to program) use cl_abap_elemdescr=>get_YYY where YYY stands for data type you want the data object be typed with.

Regards

Marcin