ABAP Select data from SAP table RCGLPIOT 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 RCGLPIOT 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 RCGLPIOT. 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 RCGLPIOT 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_RCGLPIOT TYPE STANDARD TABLE OF RCGLPIOT,
      WA_RCGLPIOT TYPE RCGLPIOT,
      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: <RCGLPIOT> TYPE RCGLPIOT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCGLPIOT
*  INTO TABLE @DATA(IT_RCGLPIOT2).
*--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_RCGLPIOT INDEX 1 INTO DATA(WA_RCGLPIOT2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCGLPIOT-LOCKMOD, sy-vline,
  WA_RCGLPIOT-INTRFLG, sy-vline,
  WA_RCGLPIOT-MANDT, sy-vline,
  WA_RCGLPIOT-RECN, sy-vline,
  WA_RCGLPIOT-ACTN, sy-vline,
  WA_RCGLPIOT-VALFR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCGLPIOT 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_RCGLPIOT 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_RCGLPIOT INTO WA_RCGLPIOT.


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

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

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

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

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

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

*Conversion exit CHRID, internal->external for field LDEPID
CALL FUNCTION 'CONVERSION_EXIT_CHRID_OUTPUT'
  EXPORTING
    input =                      WA_RCGLPIOT-LDEPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGLPIOT-LDEPID.
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_RCGLPIOT_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,
RECN TYPE STRING,
ACTN TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
AENNR TYPE STRING,
DELFLG TYPE STRING,
PARKFLG TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
UPDDAT TYPE STRING,
UPDNAM TYPE STRING,
SRSID TYPE STRING,
OWNID TYPE STRING,
RECNROOT TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
ORD TYPE STRING,
LDEPID TYPE STRING,
RVLID TYPE STRING,
REPTYPE TYPE STRING,
INITRELST TYPE STRING,
WRKLISTFLG TYPE STRING,
VERSIONFLG TYPE STRING,
DATFM TYPE STRING,
DCPFM TYPE STRING,
AUTOGENFLG TYPE STRING,
MARKCHGFLG TYPE STRING,
AUTOHISFLG TYPE STRING,
USAGECHECK TYPE STRING,
STCCKFLG TYPE STRING,
MARKCHECK TYPE STRING,
IRELSTABK TYPE STRING,
IRELSTTEXT TYPE STRING,
LDEID TYPE STRING,
LDEPNAM TYPE STRING,
RVLNAM TYPE STRING,
REPTNAM TYPE STRING,
DATFM1 TYPE STRING,
DATFM2 TYPE STRING,
DATFM3 TYPE STRING,
DATFM4 TYPE STRING,
DATFM5 TYPE STRING,
DCPFM1 TYPE STRING,
DCPFM2 TYPE STRING,
USAGECHECKNAM TYPE STRING,
DCPFM3 TYPE STRING,
DATFM6 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCGLPIOT_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_RCGLPIOT_STR-MARKFLG sy-vline 
WA_RCGLPIOT_STR-SELEFLG sy-vline 
WA_RCGLPIOT_STR-LINENO sy-vline 
WA_RCGLPIOT_STR-LINEMOD sy-vline 
WA_RCGLPIOT_STR-CHCOFLG sy-vline 
WA_RCGLPIOT_STR-LOCKMOD sy-vline 
WA_RCGLPIOT_STR-INTRFLG sy-vline 
WA_RCGLPIOT_STR-MANDT sy-vline 
WA_RCGLPIOT_STR-RECN sy-vline 
WA_RCGLPIOT_STR-ACTN sy-vline 
WA_RCGLPIOT_STR-VALFR sy-vline 
WA_RCGLPIOT_STR-VALTO sy-vline 
WA_RCGLPIOT_STR-AENNR sy-vline 
WA_RCGLPIOT_STR-DELFLG sy-vline 
WA_RCGLPIOT_STR-PARKFLG sy-vline 
WA_RCGLPIOT_STR-CRDAT sy-vline 
WA_RCGLPIOT_STR-CRNAM sy-vline 
WA_RCGLPIOT_STR-UPDDAT sy-vline 
WA_RCGLPIOT_STR-UPDNAM sy-vline 
WA_RCGLPIOT_STR-SRSID sy-vline 
WA_RCGLPIOT_STR-OWNID sy-vline 
WA_RCGLPIOT_STR-RECNROOT sy-vline 
WA_RCGLPIOT_STR-DOKAR sy-vline 
WA_RCGLPIOT_STR-DOKNR sy-vline 
WA_RCGLPIOT_STR-DOKVR sy-vline 
WA_RCGLPIOT_STR-DOKTL sy-vline 
WA_RCGLPIOT_STR-ORD sy-vline 
WA_RCGLPIOT_STR-LDEPID sy-vline 
WA_RCGLPIOT_STR-RVLID sy-vline 
WA_RCGLPIOT_STR-REPTYPE sy-vline 
WA_RCGLPIOT_STR-INITRELST sy-vline 
WA_RCGLPIOT_STR-WRKLISTFLG sy-vline 
WA_RCGLPIOT_STR-VERSIONFLG sy-vline 
WA_RCGLPIOT_STR-DATFM sy-vline 
WA_RCGLPIOT_STR-DCPFM sy-vline 
WA_RCGLPIOT_STR-AUTOGENFLG sy-vline 
WA_RCGLPIOT_STR-MARKCHGFLG sy-vline 
WA_RCGLPIOT_STR-AUTOHISFLG sy-vline 
WA_RCGLPIOT_STR-USAGECHECK sy-vline 
WA_RCGLPIOT_STR-STCCKFLG sy-vline 
WA_RCGLPIOT_STR-MARKCHECK sy-vline 
WA_RCGLPIOT_STR-IRELSTABK sy-vline 
WA_RCGLPIOT_STR-IRELSTTEXT sy-vline 
WA_RCGLPIOT_STR-LDEID sy-vline 
WA_RCGLPIOT_STR-LDEPNAM sy-vline 
WA_RCGLPIOT_STR-RVLNAM sy-vline 
WA_RCGLPIOT_STR-REPTNAM sy-vline 
WA_RCGLPIOT_STR-DATFM1 sy-vline 
WA_RCGLPIOT_STR-DATFM2 sy-vline 
WA_RCGLPIOT_STR-DATFM3 sy-vline 
WA_RCGLPIOT_STR-DATFM4 sy-vline 
WA_RCGLPIOT_STR-DATFM5 sy-vline 
WA_RCGLPIOT_STR-DCPFM1 sy-vline 
WA_RCGLPIOT_STR-DCPFM2 sy-vline 
WA_RCGLPIOT_STR-USAGECHECKNAM sy-vline 
WA_RCGLPIOT_STR-DCPFM3 sy-vline 
WA_RCGLPIOT_STR-DATFM6 sy-vline      INTO ld_text SEPARATED BY SPACE.

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