ABAP Select data from SAP table EDOC_HU_INV_MAPPING_SRC_REFX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EDOC_HU_INV_MAPPING_SRC_REFX 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_HU_INV_MAPPING_SRC_REFX. 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_HU_INV_MAPPING_SRC_REFX 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_HU_INV_MAPPING_SRC_REFX TYPE STANDARD TABLE OF EDOC_HU_INV_MAPPING_SRC_REFX,
      WA_EDOC_HU_INV_MAPPING_SRC_REFX TYPE EDOC_HU_INV_MAPPING_SRC_REFX,
      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_HU_INV_MAPPING_SRC_REFX> TYPE EDOC_HU_INV_MAPPING_SRC_REFX.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDOC_HU_INV_MAPPING_SRC_REFX
*  INTO TABLE @DATA(IT_EDOC_HU_INV_MAPPING_SRC_REFX2).
*--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_HU_INV_MAPPING_SRC_REFX INDEX 1 INTO DATA(WA_EDOC_HU_INV_MAPPING_SRC_REFX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDOC_HU_INV_MAPPING_SRC_REFX>-DOCUMENT_HEADER = 1.
<EDOC_HU_INV_MAPPING_SRC_REFX>-MANDT = 1.
<EDOC_HU_INV_MAPPING_SRC_REFX>-INVGUID = 1.
<EDOC_HU_INV_MAPPING_SRC_REFX>-BUKRS = 1.
<EDOC_HU_INV_MAPPING_SRC_REFX>-INVNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDOC_HU_INV_MAPPING_SRC_REFX-FISC_YEAR, sy-vline,
  WA_EDOC_HU_INV_MAPPING_SRC_REFX-PROCESSGUID, sy-vline,
  WA_EDOC_HU_INV_MAPPING_SRC_REFX-PARTNER, sy-vline,
  WA_EDOC_HU_INV_MAPPING_SRC_REFX-ADDRTYPE, sy-vline,
  WA_EDOC_HU_INV_MAPPING_SRC_REFX-ROLE, sy-vline,
  WA_EDOC_HU_INV_MAPPING_SRC_REFX-ITEMSELIND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDOC_HU_INV_MAPPING_SRC_REFX 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_HU_INV_MAPPING_SRC_REFX 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_HU_INV_MAPPING_SRC_REFX INTO WA_EDOC_HU_INV_MAPPING_SRC_REFX.


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

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

*Conversion exit REDAT, internal->external for field DUEDATETO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_EDOC_HU_INV_MAPPING_SRC_REFX-DUEDATETO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDOC_HU_INV_MAPPING_SRC_REFX-DUEDATETO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EDOC_HU_INV_MAPPING_SRC_REFX-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDOC_HU_INV_MAPPING_SRC_REFX-CUSTOMER.
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_HU_INV_MAPPING_SRC_REFX_STR, 
DOCUMENT_HEADER TYPE STRING,
MANDT TYPE STRING,
INVGUID TYPE STRING,
BUKRS TYPE STRING,
INVNO TYPE STRING,
FISC_YEAR TYPE STRING,
PROCESSGUID TYPE STRING,
PARTNER TYPE STRING,
ADDRTYPE TYPE STRING,
ROLE TYPE STRING,
ITEMSELIND TYPE STRING,
DUEDATEFROM TYPE STRING,
DUEDATETO TYPE STRING,
INCLCLEAREDITEMS TYPE STRING,
CLEARCREDITITEMS TYPE STRING,
ALLOPENITEMS TYPE STRING,
COLLECTIND TYPE STRING,
SELECTPROCESSID TYPE STRING,
CUSTOMER TYPE STRING,
OBJNR TYPE STRING,
OBJCOUNT TYPE STRING,
ISCREDITMEMO TYPE STRING,
ISMINORAMOUNT TYPE STRING,
CURRENCY TYPE STRING,
TOTALGROSSAMOUNT TYPE STRING,
TOTALNETAMOUNT TYPE STRING,
TOTALTAXAMOUNT TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
CANCELED TYPE STRING,
SFDOCGUID TYPE STRING,
PRINTEDON TYPE STRING,
PRINTEDBY TYPE STRING,
RSGUID TYPE STRING,
RSCOUNT TYPE STRING,
DOCUMENT_ITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDOC_HU_INV_MAPPING_SRC_REFX_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_HU_INV_MAPPING_SRC_REFX_STR-DOCUMENT_HEADER sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-MANDT sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-INVGUID sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-BUKRS sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-INVNO sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-FISC_YEAR sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-PROCESSGUID sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-PARTNER sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-ADDRTYPE sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-ROLE sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-ITEMSELIND sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-DUEDATEFROM sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-DUEDATETO sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-INCLCLEAREDITEMS sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-CLEARCREDITITEMS sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-ALLOPENITEMS sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-COLLECTIND sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-SELECTPROCESSID sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-CUSTOMER sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-OBJNR sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-OBJCOUNT sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-ISCREDITMEMO sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-ISMINORAMOUNT sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-CURRENCY sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-TOTALGROSSAMOUNT sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-TOTALNETAMOUNT sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-TOTALTAXAMOUNT sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-RERF sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-DERF sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-TERF sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-REHER sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-RBEAR sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-DBEAR sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-TBEAR sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-RBHER sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-CANCELED sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-SFDOCGUID sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-PRINTEDON sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-PRINTEDBY sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-RSGUID sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-RSCOUNT sy-vline 
WA_EDOC_HU_INV_MAPPING_SRC_REFX_STR-DOCUMENT_ITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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