ABAP Select data from SAP table RM63A_SEL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RM63A_SEL 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 RM63A_SEL. 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 RM63A_SEL 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_RM63A_SEL TYPE STANDARD TABLE OF RM63A_SEL,
      WA_RM63A_SEL TYPE RM63A_SEL,
      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: <RM63A_SEL> TYPE RM63A_SEL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RM63A_SEL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RM63A_SEL
  INTO TABLE IT_RM63A_SEL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RM63A_SEL
*  INTO TABLE @DATA(IT_RM63A_SEL2).
*--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_RM63A_SEL INDEX 1 INTO DATA(WA_RM63A_SEL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RM63A_SEL ASSIGNING <RM63A_SEL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RM63A_SEL>-ABCKZ = 1.
<RM63A_SEL>-EQFNR = 1.
<RM63A_SEL>-PPSID = 1.
<RM63A_SEL>-GSBER = 1.
<RM63A_SEL>-DAUFN = 1.

ENDLOOP.

LOOP AT IT_RM63A_SEL INTO WA_RM63A_SEL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RM63A_SEL-AUFNR, sy-vline,
  WA_RM63A_SEL-IWERK, sy-vline,
  WA_RM63A_SEL-INGRP, sy-vline,
  WA_RM63A_SEL-WERGW, sy-vline,
  WA_RM63A_SEL-GEWRK, sy-vline,
  WA_RM63A_SEL-SWERK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RM63A_SEL 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_RM63A_SEL 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_RM63A_SEL INTO WA_RM63A_SEL.


*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 DAUFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM63A_SEL-DAUFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM63A_SEL-DAUFN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM63A_SEL-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM63A_SEL-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM63A_SEL-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM63A_SEL-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PROID
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RM63A_SEL-PROID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM63A_SEL-PROID.
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_RM63A_SEL_STR, 
ABCKZ TYPE STRING,
EQFNR TYPE STRING,
PPSID TYPE STRING,
GSBER TYPE STRING,
DAUFN TYPE STRING,
AUFNR TYPE STRING,
IWERK TYPE STRING,
INGRP TYPE STRING,
WERGW TYPE STRING,
GEWRK TYPE STRING,
SWERK TYPE STRING,
STORT TYPE STRING,
BEBER TYPE STRING,
MSGRP TYPE STRING,
KOSTL TYPE STRING,
PROID TYPE STRING,
RBNR TYPE STRING,
SL1 TYPE STRING,
SL2 TYPE STRING,
SL3 TYPE STRING,
SL4 TYPE STRING,
SL5 TYPE STRING,
SL6 TYPE STRING,
SL7 TYPE STRING,
SL8 TYPE STRING,
SL9 TYPE STRING,
SL10 TYPE STRING,
SL11 TYPE STRING,
SL12 TYPE STRING,
SL13 TYPE STRING,
SL14 TYPE STRING,
SL15 TYPE STRING,
SL16 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RM63A_SEL_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_RM63A_SEL_STR-ABCKZ sy-vline 
WA_RM63A_SEL_STR-EQFNR sy-vline 
WA_RM63A_SEL_STR-PPSID sy-vline 
WA_RM63A_SEL_STR-GSBER sy-vline 
WA_RM63A_SEL_STR-DAUFN sy-vline 
WA_RM63A_SEL_STR-AUFNR sy-vline 
WA_RM63A_SEL_STR-IWERK sy-vline 
WA_RM63A_SEL_STR-INGRP sy-vline 
WA_RM63A_SEL_STR-WERGW sy-vline 
WA_RM63A_SEL_STR-GEWRK sy-vline 
WA_RM63A_SEL_STR-SWERK sy-vline 
WA_RM63A_SEL_STR-STORT sy-vline 
WA_RM63A_SEL_STR-BEBER sy-vline 
WA_RM63A_SEL_STR-MSGRP sy-vline 
WA_RM63A_SEL_STR-KOSTL sy-vline 
WA_RM63A_SEL_STR-PROID sy-vline 
WA_RM63A_SEL_STR-RBNR sy-vline 
WA_RM63A_SEL_STR-SL1 sy-vline 
WA_RM63A_SEL_STR-SL2 sy-vline 
WA_RM63A_SEL_STR-SL3 sy-vline 
WA_RM63A_SEL_STR-SL4 sy-vline 
WA_RM63A_SEL_STR-SL5 sy-vline 
WA_RM63A_SEL_STR-SL6 sy-vline 
WA_RM63A_SEL_STR-SL7 sy-vline 
WA_RM63A_SEL_STR-SL8 sy-vline 
WA_RM63A_SEL_STR-SL9 sy-vline 
WA_RM63A_SEL_STR-SL10 sy-vline 
WA_RM63A_SEL_STR-SL11 sy-vline 
WA_RM63A_SEL_STR-SL12 sy-vline 
WA_RM63A_SEL_STR-SL13 sy-vline 
WA_RM63A_SEL_STR-SL14 sy-vline 
WA_RM63A_SEL_STR-SL15 sy-vline 
WA_RM63A_SEL_STR-SL16 sy-vline      INTO ld_text SEPARATED BY SPACE.

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