ABAP Select data from SAP table RCGDHIOT 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 RCGDHIOT 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 RCGDHIOT. 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 RCGDHIOT 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_RCGDHIOT TYPE STANDARD TABLE OF RCGDHIOT,
      WA_RCGDHIOT TYPE RCGDHIOT,
      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: <RCGDHIOT> TYPE RCGDHIOT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCGDHIOT
*  INTO TABLE @DATA(IT_RCGDHIOT2).
*--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_RCGDHIOT INDEX 1 INTO DATA(WA_RCGDHIOT2).


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

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

ENDLOOP.

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

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


*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_RCGDHIOT-RECN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGDHIOT-RECN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit SPEC1, internal->external for field SUBID
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_RCGDHIOT-SUBID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGDHIOT-SUBID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRID, internal->external for field SBGVID
CALL FUNCTION 'CONVERSION_EXIT_CHRID_OUTPUT'
  EXPORTING
    input =                      WA_RCGDHIOT-SBGVID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGDHIOT-SBGVID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RCGDHIOT-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGDHIOT-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_RCGDHIOT_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,
SUBID TYPE STRING,
SBGVID TYPE STRING,
LANGU TYPE STRING,
EHSDOCCAT TYPE STRING,
INTVERSION TYPE STRING,
REPTYPE TYPE STRING,
REPSTATUS TYPE STRING,
DMSCAT TYPE STRING,
DMSKEY TYPE STRING,
VERSION TYPE STRING,
SUBVERSION TYPE STRING,
GENDAT TYPE STRING,
GENTIME TYPE STRING,
VALDAT TYPE STRING,
REQREASON TYPE STRING,
RELCHGFLG TYPE STRING,
REM TYPE STRING,
ICL_CONTENT TYPE STRING,
BLOCKFLG TYPE STRING,
LANGUTEXT TYPE STRING,
IDENT1 TYPE STRING,
IDENT2 TYPE STRING,
SBGVNAM TYPE STRING,
EXTSTAT TYPE STRING,
EXTSTATNAM TYPE STRING,
VERSTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCGDHIOT_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_RCGDHIOT_STR-MARKFLG sy-vline 
WA_RCGDHIOT_STR-SELEFLG sy-vline 
WA_RCGDHIOT_STR-LINENO sy-vline 
WA_RCGDHIOT_STR-LINEMOD sy-vline 
WA_RCGDHIOT_STR-CHCOFLG sy-vline 
WA_RCGDHIOT_STR-LOCKMOD sy-vline 
WA_RCGDHIOT_STR-INTRFLG sy-vline 
WA_RCGDHIOT_STR-MANDT sy-vline 
WA_RCGDHIOT_STR-RECN sy-vline 
WA_RCGDHIOT_STR-ACTN sy-vline 
WA_RCGDHIOT_STR-VALFR sy-vline 
WA_RCGDHIOT_STR-VALTO sy-vline 
WA_RCGDHIOT_STR-AENNR sy-vline 
WA_RCGDHIOT_STR-DELFLG sy-vline 
WA_RCGDHIOT_STR-PARKFLG sy-vline 
WA_RCGDHIOT_STR-CRDAT sy-vline 
WA_RCGDHIOT_STR-CRNAM sy-vline 
WA_RCGDHIOT_STR-UPDDAT sy-vline 
WA_RCGDHIOT_STR-UPDNAM sy-vline 
WA_RCGDHIOT_STR-SRSID sy-vline 
WA_RCGDHIOT_STR-OWNID sy-vline 
WA_RCGDHIOT_STR-RECNROOT sy-vline 
WA_RCGDHIOT_STR-SUBID sy-vline 
WA_RCGDHIOT_STR-SBGVID sy-vline 
WA_RCGDHIOT_STR-LANGU sy-vline 
WA_RCGDHIOT_STR-EHSDOCCAT sy-vline 
WA_RCGDHIOT_STR-INTVERSION sy-vline 
WA_RCGDHIOT_STR-REPTYPE sy-vline 
WA_RCGDHIOT_STR-REPSTATUS sy-vline 
WA_RCGDHIOT_STR-DMSCAT sy-vline 
WA_RCGDHIOT_STR-DMSKEY sy-vline 
WA_RCGDHIOT_STR-VERSION sy-vline 
WA_RCGDHIOT_STR-SUBVERSION sy-vline 
WA_RCGDHIOT_STR-GENDAT sy-vline 
WA_RCGDHIOT_STR-GENTIME sy-vline 
WA_RCGDHIOT_STR-VALDAT sy-vline 
WA_RCGDHIOT_STR-REQREASON sy-vline 
WA_RCGDHIOT_STR-RELCHGFLG sy-vline 
WA_RCGDHIOT_STR-REM sy-vline 
WA_RCGDHIOT_STR-ICL_CONTENT sy-vline 
WA_RCGDHIOT_STR-BLOCKFLG sy-vline 
WA_RCGDHIOT_STR-LANGUTEXT sy-vline 
WA_RCGDHIOT_STR-IDENT1 sy-vline 
WA_RCGDHIOT_STR-IDENT2 sy-vline 
WA_RCGDHIOT_STR-SBGVNAM sy-vline 
WA_RCGDHIOT_STR-EXTSTAT sy-vline 
WA_RCGDHIOT_STR-EXTSTATNAM sy-vline 
WA_RCGDHIOT_STR-VERSTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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