ABAP Select data from SAP table RCGLSIOTX into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RCGLSIOTX 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 RCGLSIOTX. 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 RCGLSIOTX 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_RCGLSIOTX TYPE STANDARD TABLE OF RCGLSIOTX,
      WA_RCGLSIOTX TYPE RCGLSIOTX,
      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: <RCGLSIOTX> TYPE RCGLSIOTX.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCGLSIOTX
*  INTO TABLE @DATA(IT_RCGLSIOTX2).
*--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_RCGLSIOTX INDEX 1 INTO DATA(WA_RCGLSIOTX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCGLSIOTX>-MARKFLG = 1.
<RCGLSIOTX>-SELEFLG = 1.
<RCGLSIOTX>-LINENO = 1.
<RCGLSIOTX>-LINEMOD = 1.
<RCGLSIOTX>-CHCOFLG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCGLSIOTX-LOCKMOD, sy-vline,
  WA_RCGLSIOTX-INTRFLG, sy-vline,
  WA_RCGLSIOTX-MANDT, sy-vline,
  WA_RCGLSIOTX-DOKAR, sy-vline,
  WA_RCGLSIOTX-DOKNR, sy-vline,
  WA_RCGLSIOTX-DOKVR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCGLSIOTX 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_RCGLSIOTX 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_RCGLSIOTX INTO WA_RCGLSIOTX.


*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_RCGLSIOTX-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGLSIOTX-DOKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RCGLSIOTX-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGLSIOTX-LANGU.
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_RCGLSIOTX_STR, 
MARKFLG TYPE STRING,
SELEFLG TYPE STRING,
LINENO TYPE STRING,
LINEMOD TYPE STRING,
CHCOFLG TYPE STRING,
LOCKMOD TYPE STRING,
INTRFLG TYPE STRING,
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,
LSYNAM TYPE STRING,
ESTCAT TYPE STRING,
LANGU TYPE STRING,
SYMB_TAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCGLSIOTX_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_RCGLSIOTX_STR-MARKFLG sy-vline 
WA_RCGLSIOTX_STR-SELEFLG sy-vline 
WA_RCGLSIOTX_STR-LINENO sy-vline 
WA_RCGLSIOTX_STR-LINEMOD sy-vline 
WA_RCGLSIOTX_STR-CHCOFLG sy-vline 
WA_RCGLSIOTX_STR-LOCKMOD sy-vline 
WA_RCGLSIOTX_STR-INTRFLG sy-vline 
WA_RCGLSIOTX_STR-MANDT sy-vline 
WA_RCGLSIOTX_STR-DOKAR sy-vline 
WA_RCGLSIOTX_STR-DOKNR sy-vline 
WA_RCGLSIOTX_STR-DOKVR sy-vline 
WA_RCGLSIOTX_STR-DOKTL sy-vline 
WA_RCGLSIOTX_STR-LDELINE sy-vline 
WA_RCGLSIOTX_STR-LSYTYPE sy-vline 
WA_RCGLSIOTX_STR-LSYMOD sy-vline 
WA_RCGLSIOTX_STR-LSYLEN sy-vline 
WA_RCGLSIOTX_STR-LSYESM sy-vline 
WA_RCGLSIOTX_STR-LSYID sy-vline 
WA_RCGLSIOTX_STR-LSYENUM sy-vline 
WA_RCGLSIOTX_STR-LENID sy-vline 
WA_RCGLSIOTX_STR-LSYRPAR sy-vline 
WA_RCGLSIOTX_STR-LSYRVAL sy-vline 
WA_RCGLSIOTX_STR-LENRGF sy-vline 
WA_RCGLSIOTX_STR-LENRGT sy-vline 
WA_RCGLSIOTX_STR-LSYEFLG sy-vline 
WA_RCGLSIOTX_STR-LSYRTIM sy-vline 
WA_RCGLSIOTX_STR-LMSGFLG sy-vline 
WA_RCGLSIOTX_STR-LSEPA sy-vline 
WA_RCGLSIOTX_STR-LSYNAM sy-vline 
WA_RCGLSIOTX_STR-ESTCAT sy-vline 
WA_RCGLSIOTX_STR-LANGU sy-vline 
WA_RCGLSIOTX_STR-SYMB_TAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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