ABAP Select data from SAP table /ACCGO/PPMG_S_ASSIGNED_DOC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ACCGO/PPMG_S_ASSIGNED_DOC 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 /ACCGO/PPMG_S_ASSIGNED_DOC. 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 /ACCGO/PPMG_S_ASSIGNED_DOC 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_/ACCGO/PPMG_S_ASSIGNED_DOC TYPE STANDARD TABLE OF /ACCGO/PPMG_S_ASSIGNED_DOC,
      WA_/ACCGO/PPMG_S_ASSIGNED_DOC TYPE /ACCGO/PPMG_S_ASSIGNED_DOC,
      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: </ACCGO/PPMG_S_ASSIGNED_DOC> TYPE /ACCGO/PPMG_S_ASSIGNED_DOC.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ACCGO/PPMG_S_ASSIGNED_DOC
  INTO TABLE IT_/ACCGO/PPMG_S_ASSIGNED_DOC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ACCGO/PPMG_S_ASSIGNED_DOC
*  INTO TABLE @DATA(IT_/ACCGO/PPMG_S_ASSIGNED_DOC2).
*--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_/ACCGO/PPMG_S_ASSIGNED_DOC INDEX 1 INTO DATA(WA_/ACCGO/PPMG_S_ASSIGNED_DOC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ACCGO/PPMG_S_ASSIGNED_DOC ASSIGNING </ACCGO/PPMG_S_ASSIGNED_DOC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ACCGO/PPMG_S_ASSIGNED_DOC>-PREPAYMENTASSIGNEDDOCUMENTUUID = 1.
</ACCGO/PPMG_S_ASSIGNED_DOC>-PREPAYMENTCONSUMPTIONDOCUUID = 1.
</ACCGO/PPMG_S_ASSIGNED_DOC>-DOCNUMBER = 1.
</ACCGO/PPMG_S_ASSIGNED_DOC>-PREPAYMENTAGRMTREFDOCUMENT = 1.
</ACCGO/PPMG_S_ASSIGNED_DOC>-PREPAYMENTAGRMTREFDOCITEM = 1.

ENDLOOP.

LOOP AT IT_/ACCGO/PPMG_S_ASSIGNED_DOC INTO WA_/ACCGO/PPMG_S_ASSIGNED_DOC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ACCGO/PPMG_S_ASSIGNED_DOC-PREPAYMENTAGRMTREFBUSOBJECT, sy-vline,
  WA_/ACCGO/PPMG_S_ASSIGNED_DOC-PREPAYMENTAGRMTLINKTYPE, sy-vline,
  WA_/ACCGO/PPMG_S_ASSIGNED_DOC-PREPAYMENTAGREEMENTISACTIVE, sy-vline,
  WA_/ACCGO/PPMG_S_ASSIGNED_DOC-PREPAYMENTAGRMTLINKAMOUNT, sy-vline,
  WA_/ACCGO/PPMG_S_ASSIGNED_DOC-PREPAYMENTAGRMTREFLINKUUID, sy-vline,
  WA_/ACCGO/PPMG_S_ASSIGNED_DOC-PREPAYMENTAGREEMENTCURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ACCGO/PPMG_S_ASSIGNED_DOC 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_/ACCGO/PPMG_S_ASSIGNED_DOC 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_/ACCGO/PPMG_S_ASSIGNED_DOC INTO WA_/ACCGO/PPMG_S_ASSIGNED_DOC.


*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 DOCNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ACCGO/PPMG_S_ASSIGNED_DOC-DOCNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ACCGO/PPMG_S_ASSIGNED_DOC-DOCNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PREPAYMENTAGRMTREFDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ACCGO/PPMG_S_ASSIGNED_DOC-PREPAYMENTAGRMTREFDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ACCGO/PPMG_S_ASSIGNED_DOC-PREPAYMENTAGRMTREFDOCUMENT.
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_/ACCGO/PPMG_S_ASSIGNED_DOC_STR, 
PREPAYMENTASSIGNEDDOCUMENTUUID TYPE STRING,
PREPAYMENTCONSUMPTIONDOCUUID TYPE STRING,
DOCNUMBER TYPE STRING,
PREPAYMENTAGRMTREFDOCUMENT TYPE STRING,
PREPAYMENTAGRMTREFDOCITEM TYPE STRING,
PREPAYMENTAGRMTREFBUSOBJECT TYPE STRING,
PREPAYMENTAGRMTLINKTYPE TYPE STRING,
PREPAYMENTAGREEMENTISACTIVE TYPE STRING,
PREPAYMENTAGRMTLINKAMOUNT TYPE STRING,
PREPAYMENTAGRMTREFLINKUUID TYPE STRING,
PREPAYMENTAGREEMENTCURRENCY TYPE STRING,
PREPAYMENTAGREEMENT TYPE STRING,
CREATIONDATETIME TYPE STRING,
REFERENCEAPPLICATIONDOCUMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ACCGO/PPMG_S_ASSIGNED_DOC_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_/ACCGO/PPMG_S_ASSIGNED_DOC_STR-PREPAYMENTASSIGNEDDOCUMENTUUID sy-vline 
WA_/ACCGO/PPMG_S_ASSIGNED_DOC_STR-PREPAYMENTCONSUMPTIONDOCUUID sy-vline 
WA_/ACCGO/PPMG_S_ASSIGNED_DOC_STR-DOCNUMBER sy-vline 
WA_/ACCGO/PPMG_S_ASSIGNED_DOC_STR-PREPAYMENTAGRMTREFDOCUMENT sy-vline 
WA_/ACCGO/PPMG_S_ASSIGNED_DOC_STR-PREPAYMENTAGRMTREFDOCITEM sy-vline 
WA_/ACCGO/PPMG_S_ASSIGNED_DOC_STR-PREPAYMENTAGRMTREFBUSOBJECT sy-vline 
WA_/ACCGO/PPMG_S_ASSIGNED_DOC_STR-PREPAYMENTAGRMTLINKTYPE sy-vline 
WA_/ACCGO/PPMG_S_ASSIGNED_DOC_STR-PREPAYMENTAGREEMENTISACTIVE sy-vline 
WA_/ACCGO/PPMG_S_ASSIGNED_DOC_STR-PREPAYMENTAGRMTLINKAMOUNT sy-vline 
WA_/ACCGO/PPMG_S_ASSIGNED_DOC_STR-PREPAYMENTAGRMTREFLINKUUID sy-vline 
WA_/ACCGO/PPMG_S_ASSIGNED_DOC_STR-PREPAYMENTAGREEMENTCURRENCY sy-vline 
WA_/ACCGO/PPMG_S_ASSIGNED_DOC_STR-PREPAYMENTAGREEMENT sy-vline 
WA_/ACCGO/PPMG_S_ASSIGNED_DOC_STR-CREATIONDATETIME sy-vline 
WA_/ACCGO/PPMG_S_ASSIGNED_DOC_STR-REFERENCEAPPLICATIONDOCUMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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