ABAP Select data from SAP table RDGVEPOIOT 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 RDGVEPOIOT 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 RDGVEPOIOT. 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 RDGVEPOIOT 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_RDGVEPOIOT TYPE STANDARD TABLE OF RDGVEPOIOT,
      WA_RDGVEPOIOT TYPE RDGVEPOIOT,
      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: <RDGVEPOIOT> TYPE RDGVEPOIOT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDGVEPOIOT
*  INTO TABLE @DATA(IT_RDGVEPOIOT2).
*--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_RDGVEPOIOT INDEX 1 INTO DATA(WA_RDGVEPOIOT2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDGVEPOIOT-LOCKMOD, sy-vline,
  WA_RDGVEPOIOT-INTRFLG, sy-vline,
  WA_RDGVEPOIOT-MANDT, sy-vline,
  WA_RDGVEPOIOT-VENUM, sy-vline,
  WA_RDGVEPOIOT-VEPOS, sy-vline,
  WA_RDGVEPOIOT-VELIN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDGVEPOIOT 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_RDGVEPOIOT 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_RDGVEPOIOT INTO WA_RDGVEPOIOT.


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

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

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

*Conversion exit CUNIT, internal->external for field VEMEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RDGVEPOIOT-VEMEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDGVEPOIOT-VEMEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ALTME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RDGVEPOIOT-ALTME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDGVEPOIOT-ALTME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RDGVEPOIOT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDGVEPOIOT-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field /CWM/VEMEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RDGVEPOIOT-/CWM/VEMEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDGVEPOIOT-/CWM/VEMEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field /CWM/ALTME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RDGVEPOIOT-/CWM/ALTME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDGVEPOIOT-/CWM/ALTME.
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_RDGVEPOIOT_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,
VENUM TYPE STRING,
VEPOS TYPE STRING,
VELIN TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
VBTYP TYPE STRING,
UNVEL TYPE STRING,
VEMNG TYPE STRING,
VEMNG_FLO TYPE STRING,
VEMEH TYPE STRING,
ALTME TYPE STRING,
VEANZ TYPE STRING,
KZBEI TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CUOBJ TYPE STRING,
BESTQ TYPE STRING,
SOBKZ TYPE STRING,
SONUM TYPE STRING,
QPLOS TYPE STRING,
ANZSN TYPE STRING,
SERAIL TYPE STRING,
PSTYV TYPE STRING,
POSNR_GEN TYPE STRING,
P_MATERIAL TYPE STRING,
WDATU TYPE STRING,
VFDAT TYPE STRING,
HU_LGORT TYPE STRING,
XCHAR TYPE STRING,
SPE_IDPLATE TYPE STRING,
SGT_SCAT TYPE STRING,
HANDLE_VEPO TYPE STRING,
_DATAAGING TYPE STRING,
/CWM/VEMNG TYPE STRING,
/CWM/VEMEH TYPE STRING,
/CWM/ALTME TYPE STRING,
WRF_CHARSTC1 TYPE STRING,
WRF_CHARSTC2 TYPE STRING,
WRF_CHARSTC3 TYPE STRING,
DGEXCSUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDGVEPOIOT_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_RDGVEPOIOT_STR-MARKFLG sy-vline 
WA_RDGVEPOIOT_STR-SELEFLG sy-vline 
WA_RDGVEPOIOT_STR-LINENO sy-vline 
WA_RDGVEPOIOT_STR-LINEMOD sy-vline 
WA_RDGVEPOIOT_STR-CHCOFLG sy-vline 
WA_RDGVEPOIOT_STR-LOCKMOD sy-vline 
WA_RDGVEPOIOT_STR-INTRFLG sy-vline 
WA_RDGVEPOIOT_STR-MANDT sy-vline 
WA_RDGVEPOIOT_STR-VENUM sy-vline 
WA_RDGVEPOIOT_STR-VEPOS sy-vline 
WA_RDGVEPOIOT_STR-VELIN sy-vline 
WA_RDGVEPOIOT_STR-VBELN sy-vline 
WA_RDGVEPOIOT_STR-POSNR sy-vline 
WA_RDGVEPOIOT_STR-VBTYP sy-vline 
WA_RDGVEPOIOT_STR-UNVEL sy-vline 
WA_RDGVEPOIOT_STR-VEMNG sy-vline 
WA_RDGVEPOIOT_STR-VEMNG_FLO sy-vline 
WA_RDGVEPOIOT_STR-VEMEH sy-vline 
WA_RDGVEPOIOT_STR-ALTME sy-vline 
WA_RDGVEPOIOT_STR-VEANZ sy-vline 
WA_RDGVEPOIOT_STR-KZBEI sy-vline 
WA_RDGVEPOIOT_STR-MATNR sy-vline 
WA_RDGVEPOIOT_STR-CHARG sy-vline 
WA_RDGVEPOIOT_STR-WERKS sy-vline 
WA_RDGVEPOIOT_STR-LGORT sy-vline 
WA_RDGVEPOIOT_STR-CUOBJ sy-vline 
WA_RDGVEPOIOT_STR-BESTQ sy-vline 
WA_RDGVEPOIOT_STR-SOBKZ sy-vline 
WA_RDGVEPOIOT_STR-SONUM sy-vline 
WA_RDGVEPOIOT_STR-QPLOS sy-vline 
WA_RDGVEPOIOT_STR-ANZSN sy-vline 
WA_RDGVEPOIOT_STR-SERAIL sy-vline 
WA_RDGVEPOIOT_STR-PSTYV sy-vline 
WA_RDGVEPOIOT_STR-POSNR_GEN sy-vline 
WA_RDGVEPOIOT_STR-P_MATERIAL sy-vline 
WA_RDGVEPOIOT_STR-WDATU sy-vline 
WA_RDGVEPOIOT_STR-VFDAT sy-vline 
WA_RDGVEPOIOT_STR-HU_LGORT sy-vline 
WA_RDGVEPOIOT_STR-XCHAR sy-vline 
WA_RDGVEPOIOT_STR-SPE_IDPLATE sy-vline 
WA_RDGVEPOIOT_STR-SGT_SCAT sy-vline 
WA_RDGVEPOIOT_STR-HANDLE_VEPO sy-vline 
WA_RDGVEPOIOT_STR-_DATAAGING sy-vline 
WA_RDGVEPOIOT_STR-/CWM/VEMNG sy-vline 
WA_RDGVEPOIOT_STR-/CWM/VEMEH sy-vline 
WA_RDGVEPOIOT_STR-/CWM/ALTME sy-vline 
WA_RDGVEPOIOT_STR-WRF_CHARSTC1 sy-vline 
WA_RDGVEPOIOT_STR-WRF_CHARSTC2 sy-vline 
WA_RDGVEPOIOT_STR-WRF_CHARSTC3 sy-vline 
WA_RDGVEPOIOT_STR-DGEXCSUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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