ABAP Select data from SAP table RECA_RS_ADD_FIELDS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECA_RS_ADD_FIELDS
*  INTO TABLE @DATA(IT_RECA_RS_ADD_FIELDS2).
*--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_RECA_RS_ADD_FIELDS INDEX 1 INTO DATA(WA_RECA_RS_ADD_FIELDS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECA_RS_ADD_FIELDS>-BUKRS = 1.
<RECA_RS_ADD_FIELDS>-SWENR = 1.
<RECA_RS_ADD_FIELDS>-XOBJINFO = 1.
<RECA_RS_ADD_FIELDS>-OBJVALIDFROM = 1.
<RECA_RS_ADD_FIELDS>-OBJVALIDTO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECA_RS_ADD_FIELDS-AUTHGRP, sy-vline,
  WA_RECA_RS_ADD_FIELDS-STTXT_INT, sy-vline,
  WA_RECA_RS_ADD_FIELDS-STTXT_EXT, sy-vline,
  WA_RECA_RS_ADD_FIELDS-XADDRESS, sy-vline,
  WA_RECA_RS_ADD_FIELDS-COUNTRY, sy-vline,
  WA_RECA_RS_ADD_FIELDS-REGION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECA_RS_ADD_FIELDS 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_RECA_RS_ADD_FIELDS 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_RECA_RS_ADD_FIELDS INTO WA_RECA_RS_ADD_FIELDS.


*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 SWENR, internal->external for field SWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_RECA_RS_ADD_FIELDS-SWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECA_RS_ADD_FIELDS-SWENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field OBJVALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RECA_RS_ADD_FIELDS-OBJVALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECA_RS_ADD_FIELDS-OBJVALIDTO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit REDAT, internal->external for field RECNENDABS
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RECA_RS_ADD_FIELDS-RECNENDABS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECA_RS_ADD_FIELDS-RECNENDABS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field RNENDMAX
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RECA_RS_ADD_FIELDS-RNENDMAX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECA_RS_ADD_FIELDS-RNENDMAX.
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_RECA_RS_ADD_FIELDS_STR, 
BUKRS TYPE STRING,
SWENR TYPE STRING,
XOBJINFO TYPE STRING,
OBJVALIDFROM TYPE STRING,
OBJVALIDTO TYPE STRING,
AUTHGRP TYPE STRING,
STTXT_INT TYPE STRING,
STTXT_EXT TYPE STRING,
XADDRESS TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
POST_CODE1 TYPE STRING,
CITY1 TYPE STRING,
CITY2 TYPE STRING,
STREET TYPE STRING,
HOUSE_NUM1 TYPE STRING,
ADRZUS TYPE STRING,
RECNNR TYPE STRING,
RECNTYPE TYPE STRING,
XRECNTYPE TYPE STRING,
RECNBEG TYPE STRING,
RECNDPO TYPE STRING,
RECNEND1ST TYPE STRING,
RECNTERMMONTHS TYPE STRING,
RECNENDABS TYPE STRING,
XPESTATE TYPE STRING,
RNHASRULE TYPE STRING,
RNEND1ST TYPE STRING,
RNENDNEW TYPE STRING,
RNENDMAX TYPE STRING,
NTALLOWEDPAR TYPE STRING,
NTALLOWEDOWN TYPE STRING,
NTPER TYPE STRING,
NTPERINACTIVE TYPE STRING,
RELEVANTEVAL TYPE STRING,
XRELEVANTEVAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECA_RS_ADD_FIELDS_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_RECA_RS_ADD_FIELDS_STR-BUKRS sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-SWENR sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-XOBJINFO sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-OBJVALIDFROM sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-OBJVALIDTO sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-AUTHGRP sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-STTXT_INT sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-STTXT_EXT sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-XADDRESS sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-COUNTRY sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-REGION sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-POST_CODE1 sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-CITY1 sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-CITY2 sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-STREET sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-HOUSE_NUM1 sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-ADRZUS sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-RECNNR sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-RECNTYPE sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-XRECNTYPE sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-RECNBEG sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-RECNDPO sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-RECNEND1ST sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-RECNTERMMONTHS sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-RECNENDABS sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-XPESTATE sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-RNHASRULE sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-RNEND1ST sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-RNENDNEW sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-RNENDMAX sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-NTALLOWEDPAR sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-NTALLOWEDOWN sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-NTPER sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-NTPERINACTIVE sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-RELEVANTEVAL sy-vline 
WA_RECA_RS_ADD_FIELDS_STR-XRELEVANTEVAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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