topic DESCRIBE FIELD statement difference between structure & Itab in Application Development and Automation Discussions

DESCRIBE FIELD statement difference between structure & Itab

Former Member — Mon, 09 Feb 2009 05:53:31 GMT

Hai ,

I am trying to read field attributes using DESCRIBE FIELD satement & I am getting the field type

in SYDES_DESC-types.

When I am trying to read the attributes of a structure like the one below,

data : begin of STRUCT ,

field1 type c,

field2 type c,

end of STRUCT.

and the table like below,

data : begin of TAB1 occurs 10,

field1 type c,

field2 type c,

end of TAB1.

that is ,

describe field STRUCT in w_sydes_desc.

describe field TAB1 in w_sydes_desc.

( w_sydes_desc is of type sydes_desc).

my question is,

for the above 2 stements the table W_SYDES_DESC-TYPES contains same values

though one is plain structure & another one is internal table with header line.

can any one tell how can we distinguish between the above fields?

or is ther any other approach to find wheter a variable is a struct or table?

Regards,

Bhaskar M

Re: DESCRIBE FIELD statement difference between structure & Itab

Former Member — Mon, 09 Feb 2009 06:01:26 GMT

hi...

you can use this one for your information

http://help.sap.com/saphelp_46C/helpdata/EN/d3/2e974d35c511d1829f0000e829fbfe/frameset.htm

regards

Re: DESCRIBE FIELD statement difference between structure & Itab

SuhaSaha — Mon, 09 Feb 2009 06:08:25 GMT

Hello,

describe field STRUCT in w_sydes_desc.
describe field TAB1 in w_sydes_desc.

When you use an int. table with HEADER LINE, then TAB1 represents the HEADER LINE & not the entire table body. To access the whole table you have to use TAB1[].

So you are getting the same results.

Try this coding:

TYPE-POOLS: sydes.

DATA : BEGIN OF struct ,
field1 TYPE c,
field2 TYPE c,
END OF struct.

DATA:
w_sydes_desc  TYPE sydes_desc,
w_sydes_desc1 TYPE sydes_desc.

DATA :
BEGIN OF tab1 OCCURS 10,
field1 TYPE c,
field2 TYPE c,
END OF tab1.

DESCRIBE FIELD struct INTO w_sydes_desc.
DESCRIBE FIELD tab1[] INTO w_sydes_desc1.

IF sy-subrc = 0.
WRITE: 'Hurray !!!'.
ENDIF.

BR,

Suhas

Re: DESCRIBE FIELD statement difference between structure & Itab

Former Member — Mon, 09 Feb 2009 06:09:15 GMT

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