ABAP Select data from SAP table FCO_DOC_HEAD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FCO_DOC_HEAD
*  INTO TABLE @DATA(IT_FCO_DOC_HEAD2).
*--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_FCO_DOC_HEAD INDEX 1 INTO DATA(WA_FCO_DOC_HEAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FCO_DOC_HEAD>-MANDT = 1.
<FCO_DOC_HEAD>-BELNR = 1.
<FCO_DOC_HEAD>-TYPE = 1.
<FCO_DOC_HEAD>-AWTYP = 1.
<FCO_DOC_HEAD>-SEQUENCE_BELNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FCO_DOC_HEAD-AWSYS, sy-vline,
  WA_FCO_DOC_HEAD-WERKS, sy-vline,
  WA_FCO_DOC_HEAD-MATNR, sy-vline,
  WA_FCO_DOC_HEAD-BWTAR, sy-vline,
  WA_FCO_DOC_HEAD-KDAUF, sy-vline,
  WA_FCO_DOC_HEAD-KDPOS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FCO_DOC_HEAD 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_FCO_DOC_HEAD 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_FCO_DOC_HEAD INTO WA_FCO_DOC_HEAD.


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

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

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

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

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

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_FCO_DOC_HEAD-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCO_DOC_HEAD-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_FCO_DOC_HEAD-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCO_DOC_HEAD-VORNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field VORNR_B
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_FCO_DOC_HEAD-VORNR_B
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCO_DOC_HEAD-VORNR_B.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

*Conversion exit NUMCV, internal->external for field REVLV
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_FCO_DOC_HEAD-REVLV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCO_DOC_HEAD-REVLV.
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_FCO_DOC_HEAD_STR, 
MANDT TYPE STRING,
BELNR TYPE STRING,
TYPE TYPE STRING,
AWTYP TYPE STRING,
SEQUENCE_BELNR TYPE STRING,
AWSYS TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
BWTAR TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PSPNR TYPE STRING,
ELEHK TYPE STRING,
OBJNR TYPE STRING,
OBJNR_P TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
VORNR TYPE STRING,
PLNFL TYPE STRING,
ARBID TYPE STRING,
AUFPL_B TYPE STRING,
APLZL_B TYPE STRING,
VORNR_B TYPE STRING,
PLNFL_B TYPE STRING,
RUECK TYPE STRING,
RMZHL TYPE STRING,
PRTNR TYPE STRING,
USNAM TYPE STRING,
BUDAT TYPE STRING,
GJAHR TYPE STRING,
PERIOD TYPE STRING,
BLDAT TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
AGRND TYPE STRING,
NGRND TYPE STRING,
MGRND TYPE STRING,
KOKRS TYPE STRING,
RESPCC TYPE STRING,
NOTIF_NUMBER TYPE STRING,
FCO_ACC_OBJ TYPE STRING,
PRCTR TYPE STRING,
GSBER TYPE STRING,
KOSGR TYPE STRING,
AUTOWE TYPE STRING,
STOKZ TYPE STRING,
STFLG TYPE STRING,
XQUANT TYPE STRING,
RQUANT TYPE STRING,
RBQUANT TYPE STRING,
RBXQUANT TYPE STRING,
MEINH TYPE STRING,
PLNME TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
REWORK_COMPL TYPE STRING,
VALUATED TYPE STRING,
NO_VALUATION TYPE STRING,
REFBN_CANCEL TYPE STRING,
REFBN_REWORK TYPE STRING,
REVLV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FCO_DOC_HEAD_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_FCO_DOC_HEAD_STR-MANDT sy-vline 
WA_FCO_DOC_HEAD_STR-BELNR sy-vline 
WA_FCO_DOC_HEAD_STR-TYPE sy-vline 
WA_FCO_DOC_HEAD_STR-AWTYP sy-vline 
WA_FCO_DOC_HEAD_STR-SEQUENCE_BELNR sy-vline 
WA_FCO_DOC_HEAD_STR-AWSYS sy-vline 
WA_FCO_DOC_HEAD_STR-WERKS sy-vline 
WA_FCO_DOC_HEAD_STR-MATNR sy-vline 
WA_FCO_DOC_HEAD_STR-BWTAR sy-vline 
WA_FCO_DOC_HEAD_STR-KDAUF sy-vline 
WA_FCO_DOC_HEAD_STR-KDPOS sy-vline 
WA_FCO_DOC_HEAD_STR-PSPNR sy-vline 
WA_FCO_DOC_HEAD_STR-ELEHK sy-vline 
WA_FCO_DOC_HEAD_STR-OBJNR sy-vline 
WA_FCO_DOC_HEAD_STR-OBJNR_P sy-vline 
WA_FCO_DOC_HEAD_STR-AUFPL sy-vline 
WA_FCO_DOC_HEAD_STR-APLZL sy-vline 
WA_FCO_DOC_HEAD_STR-VORNR sy-vline 
WA_FCO_DOC_HEAD_STR-PLNFL sy-vline 
WA_FCO_DOC_HEAD_STR-ARBID sy-vline 
WA_FCO_DOC_HEAD_STR-AUFPL_B sy-vline 
WA_FCO_DOC_HEAD_STR-APLZL_B sy-vline 
WA_FCO_DOC_HEAD_STR-VORNR_B sy-vline 
WA_FCO_DOC_HEAD_STR-PLNFL_B sy-vline 
WA_FCO_DOC_HEAD_STR-RUECK sy-vline 
WA_FCO_DOC_HEAD_STR-RMZHL sy-vline 
WA_FCO_DOC_HEAD_STR-PRTNR sy-vline 
WA_FCO_DOC_HEAD_STR-USNAM sy-vline 
WA_FCO_DOC_HEAD_STR-BUDAT sy-vline 
WA_FCO_DOC_HEAD_STR-GJAHR sy-vline 
WA_FCO_DOC_HEAD_STR-PERIOD sy-vline 
WA_FCO_DOC_HEAD_STR-BLDAT sy-vline 
WA_FCO_DOC_HEAD_STR-CPUDT sy-vline 
WA_FCO_DOC_HEAD_STR-CPUTM sy-vline 
WA_FCO_DOC_HEAD_STR-AGRND sy-vline 
WA_FCO_DOC_HEAD_STR-NGRND sy-vline 
WA_FCO_DOC_HEAD_STR-MGRND sy-vline 
WA_FCO_DOC_HEAD_STR-KOKRS sy-vline 
WA_FCO_DOC_HEAD_STR-RESPCC sy-vline 
WA_FCO_DOC_HEAD_STR-NOTIF_NUMBER sy-vline 
WA_FCO_DOC_HEAD_STR-FCO_ACC_OBJ sy-vline 
WA_FCO_DOC_HEAD_STR-PRCTR sy-vline 
WA_FCO_DOC_HEAD_STR-GSBER sy-vline 
WA_FCO_DOC_HEAD_STR-KOSGR sy-vline 
WA_FCO_DOC_HEAD_STR-AUTOWE sy-vline 
WA_FCO_DOC_HEAD_STR-STOKZ sy-vline 
WA_FCO_DOC_HEAD_STR-STFLG sy-vline 
WA_FCO_DOC_HEAD_STR-XQUANT sy-vline 
WA_FCO_DOC_HEAD_STR-RQUANT sy-vline 
WA_FCO_DOC_HEAD_STR-RBQUANT sy-vline 
WA_FCO_DOC_HEAD_STR-RBXQUANT sy-vline 
WA_FCO_DOC_HEAD_STR-MEINH sy-vline 
WA_FCO_DOC_HEAD_STR-PLNME sy-vline 
WA_FCO_DOC_HEAD_STR-UMREZ sy-vline 
WA_FCO_DOC_HEAD_STR-UMREN sy-vline 
WA_FCO_DOC_HEAD_STR-REWORK_COMPL sy-vline 
WA_FCO_DOC_HEAD_STR-VALUATED sy-vline 
WA_FCO_DOC_HEAD_STR-NO_VALUATION sy-vline 
WA_FCO_DOC_HEAD_STR-REFBN_CANCEL sy-vline 
WA_FCO_DOC_HEAD_STR-REFBN_REWORK sy-vline 
WA_FCO_DOC_HEAD_STR-REVLV sy-vline      INTO ld_text SEPARATED BY SPACE.

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