ABAP Select data from SAP table RFICRC20SEL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RFICRC20SEL 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 RFICRC20SEL. 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 RFICRC20SEL 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_RFICRC20SEL TYPE STANDARD TABLE OF RFICRC20SEL,
      WA_RFICRC20SEL TYPE RFICRC20SEL,
      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: <RFICRC20SEL> TYPE RFICRC20SEL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RFICRC20SEL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RFICRC20SEL
  INTO TABLE IT_RFICRC20SEL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFICRC20SEL
*  INTO TABLE @DATA(IT_RFICRC20SEL2).
*--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_RFICRC20SEL INDEX 1 INTO DATA(WA_RFICRC20SEL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RFICRC20SEL ASSIGNING <RFICRC20SEL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFICRC20SEL>-MODE_RECON = 1.
<RFICRC20SEL>-MODE_STATU = 1.
<RFICRC20SEL>-MODE_SELEC = 1.
<RFICRC20SEL>-MODE_REORG = 1.
<RFICRC20SEL>-RCOMP = 1.

ENDLOOP.

LOOP AT IT_RFICRC20SEL INTO WA_RFICRC20SEL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFICRC20SEL-VBUND, sy-vline,
  WA_RFICRC20SEL-KEYDT, sy-vline,
  WA_RFICRC20SEL-WAERS, sy-vline,
  WA_RFICRC20SEL-CTYPE, sy-vline,
  WA_RFICRC20SEL-DATEC, sy-vline,
  WA_RFICRC20SEL-UMSKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFICRC20SEL 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_RFICRC20SEL 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_RFICRC20SEL INTO WA_RFICRC20SEL.


*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 RCOMP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFICRC20SEL-RCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFICRC20SEL-RCOMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFICRC20SEL-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFICRC20SEL-VBUND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR_R
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFICRC20SEL-KUNNR_R
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFICRC20SEL-KUNNR_R.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR_R
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFICRC20SEL-LIFNR_R
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFICRC20SEL-LIFNR_R.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR_V
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFICRC20SEL-KUNNR_V
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFICRC20SEL-KUNNR_V.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR_V
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFICRC20SEL-LIFNR_V
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFICRC20SEL-LIFNR_V.
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_RFICRC20SEL_STR, 
MODE_RECON TYPE STRING,
MODE_STATU TYPE STRING,
MODE_SELEC TYPE STRING,
MODE_REORG TYPE STRING,
RCOMP TYPE STRING,
VBUND TYPE STRING,
KEYDT TYPE STRING,
WAERS TYPE STRING,
CTYPE TYPE STRING,
DATEC TYPE STRING,
UMSKZ TYPE STRING,
KUNNR_R TYPE STRING,
LIFNR_R TYPE STRING,
KUNNR_V TYPE STRING,
LIFNR_V TYPE STRING,
ALPHA TYPE STRING,
TRANS TYPE STRING,
DEKRE TYPE STRING,
OPITM TYPE STRING,
SVGRP TYPE STRING,
MAXMD TYPE STRING,
MAXMD_TXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFICRC20SEL_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_RFICRC20SEL_STR-MODE_RECON sy-vline 
WA_RFICRC20SEL_STR-MODE_STATU sy-vline 
WA_RFICRC20SEL_STR-MODE_SELEC sy-vline 
WA_RFICRC20SEL_STR-MODE_REORG sy-vline 
WA_RFICRC20SEL_STR-RCOMP sy-vline 
WA_RFICRC20SEL_STR-VBUND sy-vline 
WA_RFICRC20SEL_STR-KEYDT sy-vline 
WA_RFICRC20SEL_STR-WAERS sy-vline 
WA_RFICRC20SEL_STR-CTYPE sy-vline 
WA_RFICRC20SEL_STR-DATEC sy-vline 
WA_RFICRC20SEL_STR-UMSKZ sy-vline 
WA_RFICRC20SEL_STR-KUNNR_R sy-vline 
WA_RFICRC20SEL_STR-LIFNR_R sy-vline 
WA_RFICRC20SEL_STR-KUNNR_V sy-vline 
WA_RFICRC20SEL_STR-LIFNR_V sy-vline 
WA_RFICRC20SEL_STR-ALPHA sy-vline 
WA_RFICRC20SEL_STR-TRANS sy-vline 
WA_RFICRC20SEL_STR-DEKRE sy-vline 
WA_RFICRC20SEL_STR-OPITM sy-vline 
WA_RFICRC20SEL_STR-SVGRP sy-vline 
WA_RFICRC20SEL_STR-MAXMD sy-vline 
WA_RFICRC20SEL_STR-MAXMD_TXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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