ABAP Select data from SAP table RCGLSTRUCTSYM into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCGLSTRUCTSYM
*  INTO TABLE @DATA(IT_RCGLSTRUCTSYM2).
*--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_RCGLSTRUCTSYM INDEX 1 INTO DATA(WA_RCGLSTRUCTSYM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCGLSTRUCTSYM>-MANDT = 1.
<RCGLSTRUCTSYM>-DOKAR = 1.
<RCGLSTRUCTSYM>-DOKNR = 1.
<RCGLSTRUCTSYM>-DOKVR = 1.
<RCGLSTRUCTSYM>-DOKTL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCGLSTRUCTSYM-LDELINE, sy-vline,
  WA_RCGLSTRUCTSYM-LSYTYPE, sy-vline,
  WA_RCGLSTRUCTSYM-LSYMOD, sy-vline,
  WA_RCGLSTRUCTSYM-LSYLEN, sy-vline,
  WA_RCGLSTRUCTSYM-LSYESM, sy-vline,
  WA_RCGLSTRUCTSYM-LSYID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCGLSTRUCTSYM 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_RCGLSTRUCTSYM 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_RCGLSTRUCTSYM INTO WA_RCGLSTRUCTSYM.


*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 DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCGLSTRUCTSYM-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGLSTRUCTSYM-DOKNR.
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_RCGLSTRUCTSYM_STR, 
MANDT TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
LDELINE TYPE STRING,
LSYTYPE TYPE STRING,
LSYMOD TYPE STRING,
LSYLEN TYPE STRING,
LSYESM TYPE STRING,
LSYID TYPE STRING,
LSYENUM TYPE STRING,
LENID TYPE STRING,
LSYRPAR TYPE STRING,
LSYRVAL TYPE STRING,
LENRGF TYPE STRING,
LENRGT TYPE STRING,
LSYEFLG TYPE STRING,
LSYRTIM TYPE STRING,
LMSGFLG TYPE STRING,
LSEPA TYPE STRING,
LSYGRP TYPE STRING,
LSYFKOB TYPE STRING,
LSYFKEL TYPE STRING,
LSYFKPA TYPE STRING,
ESTCAT TYPE STRING,
LSYRMOD TYPE STRING,
LSYUFLG TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
KLART TYPE STRING,
CLASS TYPE STRING,
ATNAM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCGLSTRUCTSYM_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_RCGLSTRUCTSYM_STR-MANDT sy-vline 
WA_RCGLSTRUCTSYM_STR-DOKAR sy-vline 
WA_RCGLSTRUCTSYM_STR-DOKNR sy-vline 
WA_RCGLSTRUCTSYM_STR-DOKVR sy-vline 
WA_RCGLSTRUCTSYM_STR-DOKTL sy-vline 
WA_RCGLSTRUCTSYM_STR-LDELINE sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYTYPE sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYMOD sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYLEN sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYESM sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYID sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYENUM sy-vline 
WA_RCGLSTRUCTSYM_STR-LENID sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYRPAR sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYRVAL sy-vline 
WA_RCGLSTRUCTSYM_STR-LENRGF sy-vline 
WA_RCGLSTRUCTSYM_STR-LENRGT sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYEFLG sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYRTIM sy-vline 
WA_RCGLSTRUCTSYM_STR-LMSGFLG sy-vline 
WA_RCGLSTRUCTSYM_STR-LSEPA sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYGRP sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYFKOB sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYFKEL sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYFKPA sy-vline 
WA_RCGLSTRUCTSYM_STR-ESTCAT sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYRMOD sy-vline 
WA_RCGLSTRUCTSYM_STR-LSYUFLG sy-vline 
WA_RCGLSTRUCTSYM_STR-TABNAME sy-vline 
WA_RCGLSTRUCTSYM_STR-FIELDNAME sy-vline 
WA_RCGLSTRUCTSYM_STR-KLART sy-vline 
WA_RCGLSTRUCTSYM_STR-CLASS sy-vline 
WA_RCGLSTRUCTSYM_STR-ATNAM sy-vline      INTO ld_text SEPARATED BY SPACE.

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