ABAP Select data from SAP table ATRAS into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP ATRAS 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 ATRAS. 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 ATRAS 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_ATRAS TYPE STANDARD TABLE OF ATRAS,
      WA_ATRAS TYPE ATRAS,
      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: <ATRAS> TYPE ATRAS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ATRAS
*  INTO TABLE @DATA(IT_ATRAS2).
*--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_ATRAS INDEX 1 INTO DATA(WA_ATRAS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ATRAS>-MANDT = 1.
<ATRAS>-RANTYP = 1.
<ATRAS>-RANL = 1.
<ATRAS>-RHANDPL = 1.
<ATRAS>-SKURSART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ATRAS-DKURS, sy-vline,
  WA_ATRAS-WAERS, sy-vline,
  WA_ATRAS-PKUR, sy-vline,
  WA_ATRAS-PKTKUR, sy-vline,
  WA_ATRAS-SKHERK, sy-vline,
  WA_ATRAS-SOBJEKT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ATRAS 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_ATRAS 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_ATRAS INTO WA_ATRAS.


*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 ALPHA, internal->external for field RANL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ATRAS-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATRAS-RANL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RFGEB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ATRAS-RFGEB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATRAS-RFGEB.
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_ATRAS_STR, 
MANDT TYPE STRING,
RANTYP TYPE STRING,
RANL TYPE STRING,
RHANDPL TYPE STRING,
SKURSART TYPE STRING,
DKURS TYPE STRING,
WAERS TYPE STRING,
PKUR TYPE STRING,
PKTKUR TYPE STRING,
SKHERK TYPE STRING,
SOBJEKT TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RFGEB TYPE STRING,
DFREI TYPE STRING,
TFREI TYPE STRING,
SKZUSA TYPE STRING,
SKABSCH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ATRAS_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_ATRAS_STR-MANDT sy-vline 
WA_ATRAS_STR-RANTYP sy-vline 
WA_ATRAS_STR-RANL sy-vline 
WA_ATRAS_STR-RHANDPL sy-vline 
WA_ATRAS_STR-SKURSART sy-vline 
WA_ATRAS_STR-DKURS sy-vline 
WA_ATRAS_STR-WAERS sy-vline 
WA_ATRAS_STR-PKUR sy-vline 
WA_ATRAS_STR-PKTKUR sy-vline 
WA_ATRAS_STR-SKHERK sy-vline 
WA_ATRAS_STR-SOBJEKT sy-vline 
WA_ATRAS_STR-RBEAR sy-vline 
WA_ATRAS_STR-DBEAR sy-vline 
WA_ATRAS_STR-TBEAR sy-vline 
WA_ATRAS_STR-RFGEB sy-vline 
WA_ATRAS_STR-DFREI sy-vline 
WA_ATRAS_STR-TFREI sy-vline 
WA_ATRAS_STR-SKZUSA sy-vline 
WA_ATRAS_STR-SKABSCH sy-vline      INTO ld_text SEPARATED BY SPACE.

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