ABAP Select data from SAP table EDOC_AMON into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDOC_AMON
*  INTO TABLE @DATA(IT_EDOC_AMON2).
*--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_EDOC_AMON INDEX 1 INTO DATA(WA_EDOC_AMON2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDOC_AMON>-CREDAT = 1.
<EDOC_AMON>-CRETIM = 1.
<EDOC_AMON>-UPDDAT = 1.
<EDOC_AMON>-UPDTIM = 1.
<EDOC_AMON>-TIMTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDOC_AMON-DAYFRM, sy-vline,
  WA_EDOC_AMON-TIMFRM, sy-vline,
  WA_EDOC_AMON-DAYTO, sy-vline,
  WA_EDOC_AMON-TIMTO, sy-vline,
  WA_EDOC_AMON-CRITNR, sy-vline,
  WA_EDOC_AMON-STATVA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDOC_AMON 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_EDOC_AMON 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_EDOC_AMON INTO WA_EDOC_AMON.


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

*Conversion exit EDIPV, internal->external for field SNDPFC
CALL FUNCTION 'CONVERSION_EXIT_EDIPV_OUTPUT'
  EXPORTING
    input =                      WA_EDOC_AMON-SNDPFC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDOC_AMON-SNDPFC.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit EDIPV, internal->external for field RCVPFC
CALL FUNCTION 'CONVERSION_EXIT_EDIPV_OUTPUT'
  EXPORTING
    input =                      WA_EDOC_AMON-RCVPFC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDOC_AMON-RCVPFC.
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_EDOC_AMON_STR, 
CREDAT TYPE STRING,
CRETIM TYPE STRING,
UPDDAT TYPE STRING,
UPDTIM TYPE STRING,
TIMTXT TYPE STRING,
DAYFRM TYPE STRING,
TIMFRM TYPE STRING,
DAYTO TYPE STRING,
TIMTO TYPE STRING,
CRITNR TYPE STRING,
STATVA TYPE STRING,
MESTYP TYPE STRING,
MESCOD TYPE STRING,
MESFCT TYPE STRING,
SNDPRN TYPE STRING,
SNDPRT TYPE STRING,
SNDPOR TYPE STRING,
SNDPFC TYPE STRING,
RCVPRN TYPE STRING,
RCVPRT TYPE STRING,
RCVPOR TYPE STRING,
RCVPFC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDOC_AMON_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_EDOC_AMON_STR-CREDAT sy-vline 
WA_EDOC_AMON_STR-CRETIM sy-vline 
WA_EDOC_AMON_STR-UPDDAT sy-vline 
WA_EDOC_AMON_STR-UPDTIM sy-vline 
WA_EDOC_AMON_STR-TIMTXT sy-vline 
WA_EDOC_AMON_STR-DAYFRM sy-vline 
WA_EDOC_AMON_STR-TIMFRM sy-vline 
WA_EDOC_AMON_STR-DAYTO sy-vline 
WA_EDOC_AMON_STR-TIMTO sy-vline 
WA_EDOC_AMON_STR-CRITNR sy-vline 
WA_EDOC_AMON_STR-STATVA sy-vline 
WA_EDOC_AMON_STR-MESTYP sy-vline 
WA_EDOC_AMON_STR-MESCOD sy-vline 
WA_EDOC_AMON_STR-MESFCT sy-vline 
WA_EDOC_AMON_STR-SNDPRN sy-vline 
WA_EDOC_AMON_STR-SNDPRT sy-vline 
WA_EDOC_AMON_STR-SNDPOR sy-vline 
WA_EDOC_AMON_STR-SNDPFC sy-vline 
WA_EDOC_AMON_STR-RCVPRN sy-vline 
WA_EDOC_AMON_STR-RCVPRT sy-vline 
WA_EDOC_AMON_STR-RCVPOR sy-vline 
WA_EDOC_AMON_STR-RCVPFC sy-vline      INTO ld_text SEPARATED BY SPACE.

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