ABAP Select data from SAP table RGLRO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RGLRO
*  INTO TABLE @DATA(IT_RGLRO2).
*--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_RGLRO INDEX 1 INTO DATA(WA_RGLRO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RGLRO>-TITLE = 1.
<RGLRO>-STAB_TEXT = 1.
<RGLRO>-RTAB_TEXT = 1.
<RGLRO>-COUNT_ROL = 1.
<RGLRO>-FROM_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RGLRO-TO_DATE, sy-vline,
  WA_RGLRO-DOCTY, sy-vline,
  WA_RGLRO-INLIST, sy-vline,
  WA_RGLRO-OUTLIST, sy-vline,
  WA_RGLRO-CARRY_FORW, sy-vline,
  WA_RGLRO-CARRY_YEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RGLRO 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_RGLRO 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_RGLRO INTO WA_RGLRO.


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

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

*Conversion exit GJAHR, internal->external for field TO_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RGLRO-TO_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGLRO-TO_YEAR.
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_RGLRO_STR, 
TITLE TYPE STRING,
STAB_TEXT TYPE STRING,
RTAB_TEXT TYPE STRING,
COUNT_ROL TYPE STRING,
FROM_DATE TYPE STRING,
TO_DATE TYPE STRING,
DOCTY TYPE STRING,
INLIST TYPE STRING,
OUTLIST TYPE STRING,
CARRY_FORW TYPE STRING,
CARRY_YEAR TYPE STRING,
READ_DSET TYPE STRING,
FROM_DSET TYPE STRING,
WRITE_DSET TYPE STRING,
TO_DSET TYPE STRING,
REPORTNAME TYPE STRING,
HEAD_TEXT TYPE STRING,
RESET_TEXT TYPE STRING,
FIELD_TEXT TYPE STRING,
CYCLE_TEXT TYPE STRING,
STAND_ROLL TYPE STRING,
HIER_ROLL TYPE STRING,
READ_LIST0 TYPE STRING,
READ_LIST1 TYPE STRING,
READ_LIST2 TYPE STRING,
ROLL_LIST0 TYPE STRING,
ROLL_LIST1 TYPE STRING,
ROLL_LIST2 TYPE STRING,
ROLL_TYPE TYPE STRING,
FROM_PER TYPE STRING,
TO_PER TYPE STRING,
FROM_YEAR TYPE STRING,
TO_YEAR TYPE STRING,
SP_PER TYPE STRING,
READ_PC TYPE STRING,
FROM_PC TYPE STRING,
WRITE_PC TYPE STRING,
TO_PC TYPE STRING,
DETAIL_STA TYPE STRING,
BATCH TYPE STRING,
RFC_ROLL TYPE STRING,
ROLL_ALL TYPE STRING,
ROLL_FMOD TYPE STRING,
UNICODE1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RGLRO_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_RGLRO_STR-TITLE sy-vline 
WA_RGLRO_STR-STAB_TEXT sy-vline 
WA_RGLRO_STR-RTAB_TEXT sy-vline 
WA_RGLRO_STR-COUNT_ROL sy-vline 
WA_RGLRO_STR-FROM_DATE sy-vline 
WA_RGLRO_STR-TO_DATE sy-vline 
WA_RGLRO_STR-DOCTY sy-vline 
WA_RGLRO_STR-INLIST sy-vline 
WA_RGLRO_STR-OUTLIST sy-vline 
WA_RGLRO_STR-CARRY_FORW sy-vline 
WA_RGLRO_STR-CARRY_YEAR sy-vline 
WA_RGLRO_STR-READ_DSET sy-vline 
WA_RGLRO_STR-FROM_DSET sy-vline 
WA_RGLRO_STR-WRITE_DSET sy-vline 
WA_RGLRO_STR-TO_DSET sy-vline 
WA_RGLRO_STR-REPORTNAME sy-vline 
WA_RGLRO_STR-HEAD_TEXT sy-vline 
WA_RGLRO_STR-RESET_TEXT sy-vline 
WA_RGLRO_STR-FIELD_TEXT sy-vline 
WA_RGLRO_STR-CYCLE_TEXT sy-vline 
WA_RGLRO_STR-STAND_ROLL sy-vline 
WA_RGLRO_STR-HIER_ROLL sy-vline 
WA_RGLRO_STR-READ_LIST0 sy-vline 
WA_RGLRO_STR-READ_LIST1 sy-vline 
WA_RGLRO_STR-READ_LIST2 sy-vline 
WA_RGLRO_STR-ROLL_LIST0 sy-vline 
WA_RGLRO_STR-ROLL_LIST1 sy-vline 
WA_RGLRO_STR-ROLL_LIST2 sy-vline 
WA_RGLRO_STR-ROLL_TYPE sy-vline 
WA_RGLRO_STR-FROM_PER sy-vline 
WA_RGLRO_STR-TO_PER sy-vline 
WA_RGLRO_STR-FROM_YEAR sy-vline 
WA_RGLRO_STR-TO_YEAR sy-vline 
WA_RGLRO_STR-SP_PER sy-vline 
WA_RGLRO_STR-READ_PC sy-vline 
WA_RGLRO_STR-FROM_PC sy-vline 
WA_RGLRO_STR-WRITE_PC sy-vline 
WA_RGLRO_STR-TO_PC sy-vline 
WA_RGLRO_STR-DETAIL_STA sy-vline 
WA_RGLRO_STR-BATCH sy-vline 
WA_RGLRO_STR-RFC_ROLL sy-vline 
WA_RGLRO_STR-ROLL_ALL sy-vline 
WA_RGLRO_STR-ROLL_FMOD sy-vline 
WA_RGLRO_STR-UNICODE1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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