ABAP Select data from SAP table RGPLN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RGPLN
*  INTO TABLE @DATA(IT_RGPLN2).
*--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_RGPLN INDEX 1 INTO DATA(WA_RGPLN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RGPLN>-BUKRS = 1.
<RGPLN>-RCOMP = 1.
<RGPLN>-RLDNR = 1.
<RGPLN>-RVERS = 1.
<RGPLN>-RYEAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RGPLN-RPLAN, sy-vline,
  WA_RGPLN-PLDAT, sy-vline,
  WA_RGPLN-WAERS, sy-vline,
  WA_RGPLN-RUNIT, sy-vline,
  WA_RGPLN-TITLE, sy-vline,
  WA_RGPLN-ACTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RGPLN 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_RGPLN 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_RGPLN INTO WA_RGPLN.


*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_RGPLN-RCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGPLN-RCOMP.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RGPLN-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGPLN-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RGPLN-RUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGPLN-RUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field 1PER
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_RGPLN-1PER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGPLN-1PER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field 2PER
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_RGPLN-2PER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGPLN-2PER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field 1YTD
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_RGPLN-1YTD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGPLN-1YTD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field 2YTD
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_RGPLN-2YTD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGPLN-2YTD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC192, internal->external for field 1TOT
CALL FUNCTION 'CONVERSION_EXIT_AC192_OUTPUT'
  EXPORTING
    input =                      WA_RGPLN-1TOT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGPLN-1TOT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC192, internal->external for field 2TOT
CALL FUNCTION 'CONVERSION_EXIT_AC192_OUTPUT'
  EXPORTING
    input =                      WA_RGPLN-2TOT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGPLN-2TOT.
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_RGPLN_STR, 
BUKRS TYPE STRING,
RCOMP TYPE STRING,
RLDNR TYPE STRING,
RVERS TYPE STRING,
RYEAR TYPE STRING,
RPLAN TYPE STRING,
PLDAT TYPE STRING,
WAERS TYPE STRING,
RUNIT TYPE STRING,
TITLE TYPE STRING,
ACTION TYPE STRING,
SCALE TYPE STRING,
1DEC TYPE STRING,
2DEC TYPE STRING,
1UNIT TYPE STRING,
2UNIT TYPE STRING,
1UNIT_TYPE TYPE STRING,
2UNIT_TYPE TYPE STRING,
1TITLE TYPE STRING,
2TITLE TYPE STRING,
1SPRED TYPE STRING,
2SPRED TYPE STRING,
1EXP TYPE STRING,
2EXP TYPE STRING,
1POP TYPE STRING,
2POP TYPE STRING,
1PER TYPE STRING,
2PER TYPE STRING,
1YTD TYPE STRING,
2YTD TYPE STRING,
1TOT TYPE STRING,
2TOT TYPE STRING,
SET TYPE STRING,
FINDVALUE TYPE STRING,
FIELDTEXT TYPE STRING,
FIELDVALUE TYPE STRING,
START_SET TYPE STRING,
COUNT_SET TYPE STRING,
STEXT_FLD TYPE STRING,
START_SUM TYPE STRING,
COUNT_SUM TYPE STRING,
FGDISPLAY TYPE STRING,
RESOLVE TYPE STRING,
PSTATUS1 TYPE STRING,
PSTATUS2 TYPE STRING,
PSTATUS3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RGPLN_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_RGPLN_STR-BUKRS sy-vline 
WA_RGPLN_STR-RCOMP sy-vline 
WA_RGPLN_STR-RLDNR sy-vline 
WA_RGPLN_STR-RVERS sy-vline 
WA_RGPLN_STR-RYEAR sy-vline 
WA_RGPLN_STR-RPLAN sy-vline 
WA_RGPLN_STR-PLDAT sy-vline 
WA_RGPLN_STR-WAERS sy-vline 
WA_RGPLN_STR-RUNIT sy-vline 
WA_RGPLN_STR-TITLE sy-vline 
WA_RGPLN_STR-ACTION sy-vline 
WA_RGPLN_STR-SCALE sy-vline 
WA_RGPLN_STR-1DEC sy-vline 
WA_RGPLN_STR-2DEC sy-vline 
WA_RGPLN_STR-1UNIT sy-vline 
WA_RGPLN_STR-2UNIT sy-vline 
WA_RGPLN_STR-1UNIT_TYPE sy-vline 
WA_RGPLN_STR-2UNIT_TYPE sy-vline 
WA_RGPLN_STR-1TITLE sy-vline 
WA_RGPLN_STR-2TITLE sy-vline 
WA_RGPLN_STR-1SPRED sy-vline 
WA_RGPLN_STR-2SPRED sy-vline 
WA_RGPLN_STR-1EXP sy-vline 
WA_RGPLN_STR-2EXP sy-vline 
WA_RGPLN_STR-1POP sy-vline 
WA_RGPLN_STR-2POP sy-vline 
WA_RGPLN_STR-1PER sy-vline 
WA_RGPLN_STR-2PER sy-vline 
WA_RGPLN_STR-1YTD sy-vline 
WA_RGPLN_STR-2YTD sy-vline 
WA_RGPLN_STR-1TOT sy-vline 
WA_RGPLN_STR-2TOT sy-vline 
WA_RGPLN_STR-SET sy-vline 
WA_RGPLN_STR-FINDVALUE sy-vline 
WA_RGPLN_STR-FIELDTEXT sy-vline 
WA_RGPLN_STR-FIELDVALUE sy-vline 
WA_RGPLN_STR-START_SET sy-vline 
WA_RGPLN_STR-COUNT_SET sy-vline 
WA_RGPLN_STR-STEXT_FLD sy-vline 
WA_RGPLN_STR-START_SUM sy-vline 
WA_RGPLN_STR-COUNT_SUM sy-vline 
WA_RGPLN_STR-FGDISPLAY sy-vline 
WA_RGPLN_STR-RESOLVE sy-vline 
WA_RGPLN_STR-PSTATUS1 sy-vline 
WA_RGPLN_STR-PSTATUS2 sy-vline 
WA_RGPLN_STR-PSTATUS3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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