ABAP Select data from SAP table TF100 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TF100 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to TF100. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the TF100 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_TF100 TYPE STANDARD TABLE OF TF100,
      WA_TF100 TYPE TF100,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <TF100> TYPE TF100.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TF100.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TF100
  INTO TABLE IT_TF100.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TF100
*  INTO TABLE @DATA(IT_TF1002).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_TF100 INDEX 1 INTO DATA(WA_TF1002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TF100 ASSIGNING <TF100>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TF100>-MANDT = 1.
<TF100>-ITCLG = 1.
<TF100>-ITEM = 1.
<TF100>-ITCGY = 1.
<TF100>-SIGN = 1.

ENDLOOP.

LOOP AT IT_TF100 INTO WA_TF100.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TF100-ITUSE, sy-vline,
  WA_TF100-ITGRP, sy-vline,
  WA_TF100-ITTYP, sy-vline,
  WA_TF100-SBLNCIND, sy-vline,
  WA_TF100-CITEMIND, sy-vline,
  WA_TF100-APPNIIND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TF100 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_TF100 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_TF100 INTO WA_TF100.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit BFIMC, internal->external for field ITEM
CALL FUNCTION 'CONVERSION_EXIT_BFIMC_OUTPUT'
  EXPORTING
    input =                      WA_TF100-ITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TF100-ITEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BFIMC, internal->external for field CTRITEM
CALL FUNCTION 'CONVERSION_EXIT_BFIMC_OUTPUT'
  EXPORTING
    input =                      WA_TF100-CTRITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TF100-CTRITEM.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TF100_STR, 
MANDT TYPE STRING,
ITCLG TYPE STRING,
ITEM TYPE STRING,
ITCGY TYPE STRING,
SIGN TYPE STRING,
ITUSE TYPE STRING,
ITGRP TYPE STRING,
ITTYP TYPE STRING,
SBLNCIND TYPE STRING,
CITEMIND TYPE STRING,
APPNIIND TYPE STRING,
CIIND TYPE STRING,
DEIND TYPE STRING,
IDEIND TYPE STRING,
CTRITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TF100_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_TF100_STR-MANDT sy-vline 
WA_TF100_STR-ITCLG sy-vline 
WA_TF100_STR-ITEM sy-vline 
WA_TF100_STR-ITCGY sy-vline 
WA_TF100_STR-SIGN sy-vline 
WA_TF100_STR-ITUSE sy-vline 
WA_TF100_STR-ITGRP sy-vline 
WA_TF100_STR-ITTYP sy-vline 
WA_TF100_STR-SBLNCIND sy-vline 
WA_TF100_STR-CITEMIND sy-vline 
WA_TF100_STR-APPNIIND sy-vline 
WA_TF100_STR-CIIND sy-vline 
WA_TF100_STR-DEIND sy-vline 
WA_TF100_STR-IDEIND sy-vline 
WA_TF100_STR-CTRITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.