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Thanks for your quick reply. But the thing I am not clear by looking into this table is how the component relationship is maintained. For example structure 'S1' do have a defnition as given below,
begin of S1,
fld1,
S2,
fld3,
end of S1.
Here 'S2' also a structure with definition,
begin of S2,
fld1,
fld2,
end of S1.
But if I go and see inside the table DD02L for info related to 'S1', I can see 'fld1' do have two entries, one for 'S1' and another for 'S2'. But how can I differentiate between them.
To differentiate between the two fields, do the following:
TYPES:
fld TYPE char10,
BEGIN OF s2,
fld1 TYPE fld,
fld2 TYPE fld,
END OF s2,
BEGIN OF s1,
fld1 TYPE fld,
fs2 TYPE s2,
fld2 TYPE fld,
END OF s1.
DATA:
v1 TYPE s1,
v2 TYPE s2,
vfld1 TYPE fld,
vfld2 TYPE fld,
vfld3 TYPE fld,
vfld4 TYPE fld.
* Assign values
v2-fld1 = 'S2 Field 1'.
v2-fld2 = 'S2 Field 2'.
v1-fld1 = 'S1 Field 1'.
v1-fs2 = v2.
v1-fld2 = 'S1 Field 2'.
* Now reading (only with V1 structure)
vfld1 = v1-fld1.
vfld2 = v1-fs2-fld1.
vfld3 = v1-fs2-fld2.
vfld4 = v1-fld2.
If you take a careful look at the contents on DD03L you will see that "Include" or "Append" structures are also mentioned. They always start with a dot "." and they do not have the field ROLLNAME (= data element) filled. Instead the field PRECFIELD filled with the name of the include.
"include" structures are named .INCLUDE as fieldname.
"append" structures are named .INCLU--AP as fieldname.
You could then re-access DD03L with the include name to identify the fields.
This will be the case for all the DDIC structure you are
going to create. I jsut created a structure definition as I mentioned earlier(S1 and S2).May be if you have time you can also try it out and see the result in DD03L.
OK. You will find in DD03L that any structured "field" (e.g. field with a structured type) that the field DD03L-DATATYPE contains the type "STRU" and field DD03L-COMPTYE contains a letter "S" (fields INTTYPE and INTLEN are not filled).
With the field DD03L-ROLLNAME you can find out the names of the fields in question. To have to diffirentiate between fields of the same name you need to take a look at the DD03L-POSITION field. All fields from the structured field come behind its declaration in DD03L. Obviously you need to do some programming to distinguise between a direct field and a field via a structred field.
But if I do a filtering based tabname with value 'S1', query result will contain two entries for 'fld1'. One from 'S1' and another from internal structure 'S2'. My question is how can I differentiate between them? I hope the filter you meant is the same as I said above.
Bluesky
