Get the fieldnames of a generic internal table or work area

Hi All,
I have one generic work area which I have created in the below manner...
* ET_DATA itself is a generic table of type ANY...can have any internal table data in it.
* Create dynamic internal table
CREATE DATA lv_new_table LIKE et_data.
ASSIGN lv_new_table->* TO <fs_dyn_table>.
* Create dynamic work area and assign to fieldsymbol.
CREATE DATA lv_new_line LIKE LINE OF <fs_dyn_table>.
ASSIGN lv_new_line->* TO <fs_dyn_wa>.
Now...I need to get the field names of this dynamic internal table or work area..
I have already searched in forum...got many answers..but none them gives me the output.
Please note that I require the field names and not field position..
Awaiting your suggestions on how to get field names of this dynamic work area...

create data wa_ref like line of it_data.
assign wa_ref->* to <p_data>.
desc_table ?= cl_abap_tabledescr=>describe_by_data( it_data ).
desc_struc ?= desc_table->get_table_line_type( ).
describe field <p_data> type rtty components ncom.
This one is working in our environment without any error. it_data is an importing parameter in the signature of a method of type any table.

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How to get the field name of an internal table during runtime?

How to get the field name of an internal table during runtime?

Hi Sudhir,
Declare and Use Get Cursor Field in Your Prm to get the field Name of the Intenal Table
Example Code:
    <b> DATA: v_field(60).                        " Insert this code.
     GET CURSOR FIELD v_field.        " Insert this code.</b>
     <b>CHECK v_field = 'ITAB-KUNNR'.    " Insert this code. (or)
Write: v_field.</b>
Regards,
Ramganesan K.

Internal table and work area

Hi,
can anybody explain the concepts of Internal table and work area.Thanks in advance.

hai,
This may help u.
WORKAREA is a structure that can hold only one record at a time. It is a collection of fields. We use workarea as we cannot directly read from a table. In order to interact with a table we need workarea. When a Select Statement is executed on a table then the first record is read and put into the header of the table and from there put into the header or the workarea(of the same structure as that of the table)of the internal table and then transferred top the body of the internal table or directly displayed from the workarea.
Each row in a table is a record and each column is a field.
While adding or retrieving records to / from internal table we have to keep the record temporarily.
The area where this record is kept is called as work area for the internal table. The area must have the same structure as that of internal table. An internal table consists of a body and an optional header line.
Header line is a implicit work area for the internal table. It depends on how the internal table is declared that the itab will have the header line or not.
e.g.
data: begin of itab occurs 10,
ab type c,
cd type i,
end of itab. " this table will have the header line.
data: wa_itab like itab. " explicit work area for itab
data: itab1 like itab occurs 10. " table is without header line.
Internal tables are used for storing records which are obtained as a result when we use select statement on database. internal tables are run time entities and doesn't occupy any memory. they are dynamic.
internal tables are of types.
1. internal tables with header line. [header and body]
2. internal tables with out header line. [only body]
Workarea is the concept which is mainly useful when working with internal tables with out header line.
at any point of time we can access only one record through header of a internal table. every thing should be done [inserting,modifying, reading ] through header only.
ex: data: itab like standard table of mara with header line.
for internal tables with out header line we will create a work area [explicit header] as type of table for storing data into internal table.
ex: data: itab like mara,
wa like mara.
more about internal table types:
Standard table:
The key access to a standard table uses a sequential search. The time required for an access is linearly dependent on the number of entries in the internal table.
You should usually access a standard table with index operations.
Sorted table:
The table is always stored internally sorted by its key. Key access to a sorted table can therefore use a binary search. If the key is not unique, the entry with the lowest index is accessed. The time required for an access is logarithmically dependent on the number of entries in the internal table.
Index accesses to sorted tables are also allowed. You should usually access a sorted table using its key.
Hash table:
The table is internally managed with a hash procedure. All the entries must have a unique key. The time required for a key access is constant, that is it does not depend on the number of entries in the internal table.
You cannot access a hash table with an index. Accesses must use generic key operations (SORT, LOOP, etc.).
Hashed tables
This is the most appropriate type for any table where the main operation is key access. You cannot access a hashed table using its index.
The response time for key access remains constant, regardless of the number of table entries. Like database tables, hashed tables always
have a unique key. Hashed tables are useful if you want to construct and use an internal table which resembles a database table or for
processing large amounts of data.
TYPES VECTOR TYPE HASHED TABLE OF I WITH UNIQUE KEY TABLE LINE.
TYPES: BEGIN OF LINE,
COLUMN1 TYPE I,
COLUMN2 TYPE I,
COLUMN3 TYPE I,
END OF LINE.
DATA ITAB TYPE HASHED TABLE OF SPFLI
WITH UNIQUE KEY CARRID CONNID.
with regards,
B.Sowjanya,
reward points if helpful.

Internal table declaration - work area and body

Hi all
I have declared my internal table in my program as
data : itab_wa type ZRESULT_LINE,
       itab    type ZRESULT_ROW.
Where ZRESULT_LINE and ZRESULT_ROW are the structure and table types.
Now I want to add
data: TCOLOR TYPE SLIS_T_SPECIALCOL_ALV.
in my internal table declaration. How can I do this. Please remember I need to have work area and body in my internal table as I have used work area and body in my code.
Waiting..............
Message was edited by: Raju Boda

HI,
See the Declarion types of workarea and Internal tables
* Table declaration (old method)
DATA: BEGIN OF tab_ekpo OCCURS 0,             "itab with header line
ebeln TYPE ekpo-ebeln,
ebelp TYPE ekpo-ebelp,
END OF tab_ekpo.
*Table declaration (new method)     "USE THIS WAY!!!
TYPES: BEGIN OF t_ekpo,
ebeln TYPE ekpo-ebeln,
ebelp TYPE ekpo-ebelp,
END OF t_ekpo.
DATA: it_ekpo TYPE STANDARD TABLE OF t_ekpo INITIAL SIZE 0,      "itab
      wa_ekpo TYPE t_ekpo.                    "work area (header line)
* Build internal table and work area from existing internal table
DATA: it_datatab LIKE tab_ekpo OCCURS 0,      "old method
      wa_datatab LIKE LINE OF tab_ekpo.
* Build internal table and work area from existing internal table,
* adding additional fields
TYPES: BEGIN OF t_repdata.
        INCLUDE STRUCTURE tab_ekpo. "could include EKKO table itself!!
TYPES: bukrs TYPE ekpo-werks,
       bstyp TYPE ekpo-bukrs.
TYPES: END OF t_repdata.
DATA: it_repdata TYPE STANDARD TABLE OF t_repdata INITIAL SIZE 0,   "itab
      wa_repdata TYPE t_repdata.                 "work area (header line
you need to maintain same structure for both workarea as well Internal table
Regards
Sudheer

Internal table with work area

hi all,
data: BEGIN OF it_summ OCCURS 0.
INCLUDE STRUCTURE yapn_summary.
data: END OF it_summ.
data : wa_demo1 type yapn_summary.
clear wa_demo1.
wa_demo1-sumr = 'hai'.
append wa_Demo1 to it_summ.
WRITE: it_summ-sumr.
its not get output..
i want to display for hai using it_summ.
donot use work area.
how to change it.?
reply me soon,
s.suresh.

You can't write out an internal table - you can only write out a line (or components of a line) of an internal table. So you MUST use a work area. If you use OCCURS 0 then you've a table with a headerline, and so don't need a workarea. However, later versions of ABAP discourage tables with headerline, and it is preferred to define a specific work area. So, either:
data: BEGIN OF it_summ OCCURS 0.
INCLUDE STRUCTURE yapn_summary.
data: END OF it_summ.
clear it_summ.
it_summ-sumr = 'hai'.
append wa_Demo1 to it_summ.
LOOP AT it_summ.
WRITE: it_summ-sumr.
ENDLOOP.
Now, you see here that at some points it_summ refers to the table, and at others to the header-line. This is ambiguous, and therefore BAD. It's better to define the table and work area seperately.
data: it_summ TYPE STANDARD TABLE OF yapn_summary WITH NON-UNIQUE KEY table_line.
data : wa_demo1 type yapn_summary.
clear wa_demo1.
wa_demo1-sumr = 'hai'.
append wa_Demo1 to it_summ.
LOOP AT it_summ INTO wa_demo1.
WRITE: wa_demo1-sumr.
ENDLOOP.
matt

I need insert /update/modify ztable from internal table or work area

I have one simple problem.
TYPES: BEGIN OF t_account,
        acc_no          LIKE zztaccountheader-acc_no,
        cust_id         LIKE zztaccountheader-cust_id,
        acc_type        LIKE zztaccountheader-acc_type,
        od_option       LIKE zztaccountheader-od_option,
        od_limit        LIKE zztaccountheader-od_limit,
        od_issue_date   LIKE zztaccountheader-od_issue_date,
        END OF t_account.
data: lwa_account TYPE t_account,
     li_account TYPE STANDARD TABLE OF t_account,
bu scerrin i am inputing data :
i want modify updare or insert record into ztable by work area i put following thing
MOVE : zztaccountheader-acc_no        TO lwa_account-acc_no,
           zztcustomer-cust_id            TO lwa_account-cust_id,
           zztaccountheader-acc_type      TO lwa_account-acc_type,
           zztaccountheader-od_option     TO lwa_account-od_option,
           zztaccountheader-od_limit      TO lwa_account-od_limit,
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ENDIF.
i am etting error
The type of the database table and work area (or internal table)
"LWA_ACCOUNT" are not Unicode convertible.
please solve it

hi,
decalre like this.
tables : zztaccountheader.
data : t_account like zztaccountheader occurs 0 with header line.
data: lwa_account TYPE t_account,
li_account TYPE STANDARD TABLE OF t_account,
MOVE : zztaccountheader-acc_no TO lwa_account-acc_no,
zztcustomer-cust_id TO lwa_account-cust_id,
zztaccountheader-acc_type TO lwa_account-acc_type,
zztaccountheader-od_option TO lwa_account-od_option,
zztaccountheader-od_limit TO lwa_account-od_limit,
zztaccountheader-od_issue_date TO lwa_account-od_issue_date.
INSERT zztaccountheader CLIENT SPECIFIED FROM lwa_account .
CLEAR lwa_account.
ENDIF.
rgss
anver
if hlped mark points

What is the best way to get the end of record from internal table?

Hi,
what is the best way to get the latest year and month ?
the end of record(KD00011001H 1110 2007 11)
Not KE00012002H, KA00012003H
any function for MBEWH table ?
MATNR                 BWKEY      LFGJA LFMON
========================================
KE00012002H        1210             2005 12
KE00012002H        1210             2006 12
KA00012003H        1000             2006 12
KD00011001H        1110             2005 12
KD00011001H        1110             2006 12
KD00011001H        1110             2007 05
KD00011001H        1110             2007 08
KD00011001H        1110             2007 09
KD00011001H        1110             2007 10
KD00011001H        1110             2007 11
thank you
dennis
Edited by: ogawa Dennis on Jan 2, 2008 1:28 AM
Edited by: ogawa Dennis on Jan 2, 2008 1:33 AM

Hi dennis,
you can try this:
Sort <your internal_table MBEWH> BY lfgja DESCENDING lfmon DESCENDING.
Thanks
William Wilstroth

Error: you cannot create an internal table as work area

Hi, My code is as follows and when i perform a check it gives the above mentioned error in the select statement.
TYPES: BEGIN OF t_vbrk,
        vbeln            TYPE vbrk-vbeln,
        vtweg            TYPE vbrk-vtweg,
      END OF t_vbrk.
DATA vbrktab TYPE TABLE OF t_vbrk.
SELECT      vbeln
                vtweg
         FROM   vbrk
         INTO vbrktab
         FOR ALL ENTRIES IN xxcvb
         WHERE vbeln       = xxcvb-vbeln.
      INSERT TABLE vbrktab.
    ENDSELECT.
where xxcvb is another internal table with some key values.

Hi
I don't know how you've defined XXCVB, but u should write:
TYPES: BEGIN OF T_VBRK,
         VBELN TYPE VBRK-VBELN,
         VTWEG TYPE VBRK-VTWEG,
       END OF T_VBRK.
DATA: VBRKTAB    TYPE TABLE OF T_VBRK,
      WA_VBRKTAB TYPE T_VBRK.
SELECT VBELN VTWEG FROM VBRK INTO TABLE VBRKTAB
FOR ALL ENTRIES IN XXCVB
     WHERE VBELN = XXCVB-VBELN.
LOOP AT VBRKTAB INTO WA_VBRKTAB.
ENDLOOP.
Max

Smartform Table; Internal table to work area

Hi,
I have created smartform with one table,in that internal table values are not moving into workarea,can anyone solve my issue.

Hi Bose,
If you are populating internal table values in progarm and passing this internal table to smartforms
here is the syntax and declaration to follow
data : itab_final type standard table of type_final (some type) with header line .
Pass this under tables in your Z program,
CALL FUNCTION 'smartform name'
       EXPORTING
          archive_index      = toa_dara
          archive_parameters = arc_params
          vbdkl              = vbdkl
          vbdpl              = vbdpl
          makt               = makt
          qals               = qals
          vbco3              = vbco3
        TABLES
          g_final            = g_final
        EXCEPTIONS
          FORMATTING_ERROR   = 1
          INTERNAL_ERROR     = 2
          SEND_ERROR         = 3
          USER_CANCELED      = 4
          OTHERS             = 5.
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Declare this internal table in form interface under tables as,
G_FINAL     TYPE     Z_TT_FINAL_COA(table type)
And work area in global data as,
WA_G_FINAL     TYPE     ZFINAL_COA (structure)
Now it can be used used in table control under data column as
G_FINAL          INTO                  WA_G_FINAL
Regards,
Sagar.

How to get the last record of an internall table ....

Hi All..
i want to get the last record of an internal table itab, and i want the the value of the last record.

Hi,
     Use describe statment.
data: lv_line type i.
    Describe table itab lines lv_line.
    read table itab into wa_itab index lv_line.
regards,
Santosh Thorat

Structure of table and work area are not compatible - table control wizard

Structure of table and work area are not compatible is the error i am getting when specifying my internal table and work area in my table control? What am I doing wrong?

hii
this error comes when you have different structure of work area then internal table..so work area will not work here and you will not be able to append records in internal table.
check strucure of internal table and work area.it should be like below.
TYPES:
BEGIN OF type_s_kna1,
     kunnr LIKE kna1-kunnr,            " Customer Number
     name1 LIKE kna1-name1,            " Name
     vbeln LIKE vbap-vbeln,            " Sales Document
END OF type_s_kna1.
* Internal Table And Work Area Declarations For Customer Details      *
DATA : t_kna1 TYPE STANDARD TABLE OF type_s_kna1,
         fs_kna1 TYPE type_s_kna1.
regards
twinkal

Generic Internal Tables unassign

I am using a generic internal tables to get some data one by one. if i get it onece, how i make it to generic internal table again?
just like:
CALL METHOD cl_alv_table_create=>create_dynamic_table
    EXPORTING
      it_fieldcatalog           = it_fldcat
    IMPORTING
      ep_table                  = em_str
    EXCEPTIONS
      generate_subpool_dir_full = 1
      OTHERS                    = 2.
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TRY .
      em_pyst = <fs_table>.
    CATCH cx_sy_dyn_call_illegal_type .
ENDTRY.
and i'd like to use em_pyst again, but it already has the same structure of last <fs_table>. how can i make it correct?

I am using a generic internal tables to get some data one by one. if i get it onece, how i make it to generic internal table again?
Not sure what is your point here.
First you create dyncamic table em_str . It already receives some structure which you determined in fieldcatalog. Than you have to dereference it (assign it to field symbol in order you can address it) ASSIGN em_str->* TO <fs_table> .
Finally you want to retrun this empty dynamically generated table to exporting parameter em_pyst . If this parameter is typed as any table it will take on the structure from your field symbol <fs_table> . I think for generic parameter this is the point to pass it generic TO function/method and receive it typed FROM the function.
If you clarify what exactly you want to achieve it will be easier to help you.
Regards
Marcin

Get ALV Report's Result Into Internal Table

Hello everyone,
is there a way to get a alv reports result into an internal table?
For example: is it possible to get the values from transaction S_ALR_87012078.
I mean i want to write a function an it will give you the alv reports result as internal table, so you won't have to dig the reports code in.
thanks to any answers from now. bye.

Hi
This is a wrapper program which will execute the standard program and capture the output as we are using list to memory
Then after we will be using LIST_FROM_MEMORY and 'LIST_TO_ASCI'
submit rhrhaz00 exporting list to memory
and return
with pchplvar = pchplvar
with pchotype = pchotype
with pchobjid in pchobjid
with pchsobid in pchsobid
with pchseark = pchseark
with pchostat = pchostat
with pchistat = pchistat
with pchztr_d = pchztr_d
with pchztr_a = pchztr_a
with pchztr_z = pchztr_z
with pchztr_m = pchztr_m
with pchztr_p = pchztr_p
with pchztr_y = pchztr_y
with pchztr_f = pchztr_f
with pchobeg = pchobeg
with pchoend = pchoend
with pchtimed = pchtimed
with pchbegda = pchbegda
with pchendda = pchendda
* with pchwegid = pchwegid
* with pchsvect = pchsvect
* with pchdepth = pchdepth
with infty in infty
with subty in subty
with vdata = vdata
with info = info.
data: list like abaplist occurs 0 with header line.
data: txtlines(1024) type c occurs 0 with header line.
clear list.
refresh list.
clear tbl_reportlines.
refresh tbl_reportlines.
call function 'LIST_FROM_MEMORY'
tables
listobject = list
exceptions
not_found = 1
others = 2.
if sy-subrc <> 0.
message id sy-msgid type sy-msgty number sy-msgno
with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
endif.
call function 'LIST_TO_ASCI'
* EXPORTING
* LIST_INDEX = -1
* WITH_LINE_BREAK = ' '
* IMPORTING
* LIST_STRING_ASCII =
* LIST_DYN_ASCII =
tables
listasci = txtlines
listobject = list
exceptions
empty_list = 1
list_index_invalid = 2
others = 3
if sy-subrc <> 0.
message id sy-msgid type sy-msgty number sy-msgno
with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
else.
tbl_reportlines[] = txtlines[].
call function 'LIST_FREE_MEMORY'.
endif.
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*Example Code (Retrieving list from memory)
DATA BEGIN OF itab_list OCCURS 0.
INCLUDE STRUCTURE abaplist.
DATA END OF itab_list.
DATA: BEGIN OF vlist OCCURS 0,
filler1(01) TYPE c,
field1(06) TYPE c,
filler(08) TYPE c,
field2(10) TYPE c,
filler3(01) TYPE c,
field3(10) TYPE c,
filler4(01) TYPE c,
field4(3) TYPE c,
filler5(02) TYPE c,
field5(15) TYPE c,
filler6(02) TYPE c,
field6(30) TYPE c,
filler7(43) TYPE c,
field7(10) TYPE c,
END OF vlist.
SUBMIT zreport EXPORTING LIST TO MEMORY.
CALL FUNCTION 'LIST_FROM_MEMORY'
TABLES
listobject = itab_list
EXCEPTIONS
not_found = 4
OTHERS = 8.
CALL FUNCTION 'LIST_TO_ASCI'
EXPORTING
list_index = -1
TABLES
listasci = vlist
listobject = itab_list
EXCEPTIONS
empty_list = 1
list_index_invalid = 2
OTHERS = 3.
IF sy-subrc NE '0'.
WRITE:/ 'LIST_TO_ASCI error !! ', sy-subrc.
ENDIF.
Re: alv to internal table

How can I search the last line in an internal table?

How can I search the last line in an internal table?
With a describe?? If it is , how can I do that?
Thanks!!

Hi shilpa,
it seems to be you are NEW to SDN. welcome. if you want to get solutions to your Questions, you have to post a NEW thread.dont use the existing thread to post your question.
any way i am giving you the solution for your question
LOOP AT ITAB WHERE F1 = <SOME VALUE>
F2 = <SOME VALUE>.
ENDLOOP.
IF SY-SUBRC = 0.
ITAB WILL HAVE THE LAST RECORD which satisfying the given criteria in WHERE clause of LOOP.
write itab <--this ITAB will have the last record.
ENDIF.
regards,
Srikanth.
Message was edited by: Srikanth Kidambi

The type of the database table and work area (or internal table)...

Hello
I am trying to use a database and select all records from it and store them into an internal table.
My code:
Select * from xixi_dbcurrency into table gt_currency.
The error:
"The type of the database table and work area (or internal table) "GT_CURRENCY" are not Unicode-convertible . . . . . . . . . .     "
Any suggestions?
Thank you

Hi Thomas,
Thank you for your inputs above.
But as you suggested is we use INTO CORRESPONDING FIELDS OF TABLE then it resolve the error.
But I have below piece of code:
DATA:    it_new_source TYPE STANDARD TABLE OF _ty_s_sc_1,
              wa_source TYPE _ty_s_sc_1,
              wa_new_source TYPE _ty_s_sc_1,
              ls_target_key TYPE t_target_key.
SELECT * INTO CORRESPONDING FIELDS OF TABLE it_new_source
       FROM /bic/afao06pa100
       FOR ALL ENTRIES IN SOURCE_PACKAGE
       where /bic/fcckjobno = SOURCE_PACKAGE-/bic/fcckjobno
       and /bic/fcckjitid = SOURCE_PACKAGE-/bic/fcckjitid.
But since this is reading into corresponding fields of table the data load from one DSO to other DOS is running for long more that 15 hours and still not getting completed and giving dump.
So if I switch the search to below:
SELECT * FROM /bic/afao06pa100
   INTO TABLE it_new_source
       FOR ALL ENTRIES IN SOURCE_PACKAGE
       where /bic/fcckjobno = SOURCE_PACKAGE-/bic/fcckjobno
       and /bic/fcckjitid = SOURCE_PACKAGE-/bic/fcckjitid.
Then I am getting below error:E:The type of the database table and work area (or internal table) "IT_NEW_SOURCE" are not Unicode convertible.
Can you please advice on this, as performance need to improve in start routine code.
Thank You.

Get the fieldnames of a generic internal table or work area

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