ABAP Select data from SAP table FMPA_TRANSFER_DOCS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FMPA_TRANSFER_DOCS 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 FMPA_TRANSFER_DOCS. 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 FMPA_TRANSFER_DOCS 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_FMPA_TRANSFER_DOCS TYPE STANDARD TABLE OF FMPA_TRANSFER_DOCS,
      WA_FMPA_TRANSFER_DOCS TYPE FMPA_TRANSFER_DOCS,
      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: <FMPA_TRANSFER_DOCS> TYPE FMPA_TRANSFER_DOCS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMPA_TRANSFER_DOCS
*  INTO TABLE @DATA(IT_FMPA_TRANSFER_DOCS2).
*--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_FMPA_TRANSFER_DOCS INDEX 1 INTO DATA(WA_FMPA_TRANSFER_DOCS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMPA_TRANSFER_DOCS>-BUKRS = 1.
<FMPA_TRANSFER_DOCS>-KNBELNR = 1.
<FMPA_TRANSFER_DOCS>-KNGJAHR = 1.
<FMPA_TRANSFER_DOCS>-VOBUKRS = 1.
<FMPA_TRANSFER_DOCS>-VOBELNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMPA_TRANSFER_DOCS-VOGJAHR, sy-vline,
  WA_FMPA_TRANSFER_DOCS-VOBUZEI, sy-vline,
  WA_FMPA_TRANSFER_DOCS-AUGBL, sy-vline,
  WA_FMPA_TRANSFER_DOCS-AUGDT, sy-vline,
  WA_FMPA_TRANSFER_DOCS-GJAHR, sy-vline,
  WA_FMPA_TRANSFER_DOCS-ZHLDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMPA_TRANSFER_DOCS 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_FMPA_TRANSFER_DOCS 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_FMPA_TRANSFER_DOCS INTO WA_FMPA_TRANSFER_DOCS.


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

*Conversion exit GJAHR, internal->external for field KNGJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMPA_TRANSFER_DOCS-KNGJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMPA_TRANSFER_DOCS-KNGJAHR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field VOGJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMPA_TRANSFER_DOCS-VOGJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMPA_TRANSFER_DOCS-VOGJAHR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMPA_TRANSFER_DOCS-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMPA_TRANSFER_DOCS-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field REBZJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMPA_TRANSFER_DOCS-REBZJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMPA_TRANSFER_DOCS-REBZJ.
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_FMPA_TRANSFER_DOCS_STR, 
BUKRS TYPE STRING,
KNBELNR TYPE STRING,
KNGJAHR TYPE STRING,
VOBUKRS TYPE STRING,
VOBELNR TYPE STRING,
VOGJAHR TYPE STRING,
VOBUZEI TYPE STRING,
AUGBL TYPE STRING,
AUGDT TYPE STRING,
GJAHR TYPE STRING,
ZHLDT TYPE STRING,
PERIO TYPE STRING,
FKBTR TYPE STRING,
TRBTR TYPE STRING,
TWAER TYPE STRING,
SKNTO TYPE STRING,
REBZT TYPE STRING,
REBZG TYPE STRING,
REBZJ TYPE STRING,
RDIFF TYPE STRING,
VRGNG TYPE STRING,
BVORG TYPE STRING,
BUZEI TYPE STRING,
XREF1 TYPE STRING,
NOTE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMPA_TRANSFER_DOCS_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_FMPA_TRANSFER_DOCS_STR-BUKRS sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-KNBELNR sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-KNGJAHR sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-VOBUKRS sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-VOBELNR sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-VOGJAHR sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-VOBUZEI sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-AUGBL sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-AUGDT sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-GJAHR sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-ZHLDT sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-PERIO sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-FKBTR sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-TRBTR sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-TWAER sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-SKNTO sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-REBZT sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-REBZG sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-REBZJ sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-RDIFF sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-VRGNG sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-BVORG sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-BUZEI sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-XREF1 sy-vline 
WA_FMPA_TRANSFER_DOCS_STR-NOTE sy-vline      INTO ld_text SEPARATED BY SPACE.

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