ABAP Select data from SAP table RNREDOMA_FIELDS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNREDOMA_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 RNREDOMA_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 RNREDOMA_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_RNREDOMA_FIELDS TYPE STANDARD TABLE OF RNREDOMA_FIELDS,
      WA_RNREDOMA_FIELDS TYPE RNREDOMA_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: <RNREDOMA_FIELDS> TYPE RNREDOMA_FIELDS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNREDOMA_FIELDS
*  INTO TABLE @DATA(IT_RNREDOMA_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_RNREDOMA_FIELDS INDEX 1 INTO DATA(WA_RNREDOMA_FIELDS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNREDOMA_FIELDS>-PLAN_DURAT = 1.
<RNREDOMA_FIELDS>-PLAN_DAYS = 1.
<RNREDOMA_FIELDS>-PLAN_MONTHS = 1.
<RNREDOMA_FIELDS>-START_DATE = 1.
<RNREDOMA_FIELDS>-END_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNREDOMA_FIELDS-CREA_DATE, sy-vline,
  WA_RNREDOMA_FIELDS-RESP_PERS, sy-vline,
  WA_RNREDOMA_FIELDS-INITIAL_DOC, sy-vline,
  WA_RNREDOMA_FIELDS-RENEWED_DOC, sy-vline,
  WA_RNREDOMA_FIELDS-END_DOC, sy-vline,
  WA_RNREDOMA_FIELDS-INDEPEND_DOC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNREDOMA_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_RNREDOMA_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_RNREDOMA_FIELDS INTO WA_RNREDOMA_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 ALPHA, internal->external for field RESP_PERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNREDOMA_FIELDS-RESP_PERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNREDOMA_FIELDS-RESP_PERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LGTXT
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RNREDOMA_FIELDS-LGTXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNREDOMA_FIELDS-LGTXT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field KOSTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNREDOMA_FIELDS-KOSTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNREDOMA_FIELDS-KOSTR.
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_RNREDOMA_FIELDS_STR, 
PLAN_DURAT TYPE STRING,
PLAN_DAYS TYPE STRING,
PLAN_MONTHS TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
CREA_DATE TYPE STRING,
RESP_PERS TYPE STRING,
INITIAL_DOC TYPE STRING,
RENEWED_DOC TYPE STRING,
END_DOC TYPE STRING,
INDEPEND_DOC TYPE STRING,
KZTXT TYPE STRING,
LGTXT TYPE STRING,
DIAG_EXIST TYPE STRING,
PLAN_KZ TYPE STRING,
ESMESIT TYPE STRING,
ESDIASIT TYPE STRING,
ESFECH_ENVIO TYPE STRING,
ESFBAJA TYPE STRING,
ESFAGOTA TYPE STRING,
ESPLANS TYPE STRING,
NNAME TYPE STRING,
VNAME TYPE STRING,
GBDAT TYPE STRING,
GBNAM TYPE STRING,
ADRNR TYPE STRING,
ADROB TYPE STRING,
KOSTR TYPE STRING,
PATKZ TYPE STRING,
VERAB TYPE STRING,
VERNR TYPE STRING,
VKNUM TYPE STRING,
VKNRA TYPE STRING,
VKVST TYPE STRING,
VKVSE TYPE STRING,
VCEND TYPE STRING,
VERSV TYPE STRING,
VERBI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNREDOMA_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_RNREDOMA_FIELDS_STR-PLAN_DURAT sy-vline 
WA_RNREDOMA_FIELDS_STR-PLAN_DAYS sy-vline 
WA_RNREDOMA_FIELDS_STR-PLAN_MONTHS sy-vline 
WA_RNREDOMA_FIELDS_STR-START_DATE sy-vline 
WA_RNREDOMA_FIELDS_STR-END_DATE sy-vline 
WA_RNREDOMA_FIELDS_STR-CREA_DATE sy-vline 
WA_RNREDOMA_FIELDS_STR-RESP_PERS sy-vline 
WA_RNREDOMA_FIELDS_STR-INITIAL_DOC sy-vline 
WA_RNREDOMA_FIELDS_STR-RENEWED_DOC sy-vline 
WA_RNREDOMA_FIELDS_STR-END_DOC sy-vline 
WA_RNREDOMA_FIELDS_STR-INDEPEND_DOC sy-vline 
WA_RNREDOMA_FIELDS_STR-KZTXT sy-vline 
WA_RNREDOMA_FIELDS_STR-LGTXT sy-vline 
WA_RNREDOMA_FIELDS_STR-DIAG_EXIST sy-vline 
WA_RNREDOMA_FIELDS_STR-PLAN_KZ sy-vline 
WA_RNREDOMA_FIELDS_STR-ESMESIT sy-vline 
WA_RNREDOMA_FIELDS_STR-ESDIASIT sy-vline 
WA_RNREDOMA_FIELDS_STR-ESFECH_ENVIO sy-vline 
WA_RNREDOMA_FIELDS_STR-ESFBAJA sy-vline 
WA_RNREDOMA_FIELDS_STR-ESFAGOTA sy-vline 
WA_RNREDOMA_FIELDS_STR-ESPLANS sy-vline 
WA_RNREDOMA_FIELDS_STR-NNAME sy-vline 
WA_RNREDOMA_FIELDS_STR-VNAME sy-vline 
WA_RNREDOMA_FIELDS_STR-GBDAT sy-vline 
WA_RNREDOMA_FIELDS_STR-GBNAM sy-vline 
WA_RNREDOMA_FIELDS_STR-ADRNR sy-vline 
WA_RNREDOMA_FIELDS_STR-ADROB sy-vline 
WA_RNREDOMA_FIELDS_STR-KOSTR sy-vline 
WA_RNREDOMA_FIELDS_STR-PATKZ sy-vline 
WA_RNREDOMA_FIELDS_STR-VERAB sy-vline 
WA_RNREDOMA_FIELDS_STR-VERNR sy-vline 
WA_RNREDOMA_FIELDS_STR-VKNUM sy-vline 
WA_RNREDOMA_FIELDS_STR-VKNRA sy-vline 
WA_RNREDOMA_FIELDS_STR-VKVST sy-vline 
WA_RNREDOMA_FIELDS_STR-VKVSE sy-vline 
WA_RNREDOMA_FIELDS_STR-VCEND sy-vline 
WA_RNREDOMA_FIELDS_STR-VERSV sy-vline 
WA_RNREDOMA_FIELDS_STR-VERBI sy-vline      INTO ld_text SEPARATED BY SPACE.

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