ABAP Select data from SAP table WEBINVOICEHCOM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WEBINVOICEHCOM
*  INTO TABLE @DATA(IT_WEBINVOICEHCOM2).
*--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_WEBINVOICEHCOM INDEX 1 INTO DATA(WA_WEBINVOICEHCOM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WEBINVOICEHCOM>-VBELN = 1.
<WEBINVOICEHCOM>-FKART = 1.
<WEBINVOICEHCOM>-FKART_TEXT = 1.
<WEBINVOICEHCOM>-FKTYP = 1.
<WEBINVOICEHCOM>-FKTYP_TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WEBINVOICEHCOM-VBTYP, sy-vline,
  WA_WEBINVOICEHCOM-VBTYP_TEXT, sy-vline,
  WA_WEBINVOICEHCOM-WAERK, sy-vline,
  WA_WEBINVOICEHCOM-WAERK_ISO, sy-vline,
  WA_WEBINVOICEHCOM-NETWR, sy-vline,
  WA_WEBINVOICEHCOM-KUNAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WEBINVOICEHCOM 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_WEBINVOICEHCOM 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_WEBINVOICEHCOM INTO WA_WEBINVOICEHCOM.


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

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

*Conversion exit ALPHA, internal->external for field KUNRG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WEBINVOICEHCOM-KUNRG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WEBINVOICEHCOM-KUNRG.
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_WEBINVOICEHCOM_STR, 
VBELN TYPE STRING,
FKART TYPE STRING,
FKART_TEXT TYPE STRING,
FKTYP TYPE STRING,
FKTYP_TEXT TYPE STRING,
VBTYP TYPE STRING,
VBTYP_TEXT TYPE STRING,
WAERK TYPE STRING,
WAERK_ISO TYPE STRING,
NETWR TYPE STRING,
KUNAG TYPE STRING,
KUNRG TYPE STRING,
MWSBK TYPE STRING,
FKSTO TYPE STRING,
FKDAT TYPE STRING,
INCO1 TYPE STRING,
INCO1_TEXT TYPE STRING,
INCO2 TYPE STRING,
ZTERM TYPE STRING,
ZTERM_TEXT TYPE STRING,
BUKRS TYPE STRING,
BUTXT TYPE STRING,
XBLNR TYPE STRING,
ZFBDT TYPE STRING,
ZBDATE1 TYPE STRING,
ZBDATE2 TYPE STRING,
NETDATE TYPE STRING,
ZBD1P TYPE STRING,
ZBD2P TYPE STRING,
VKORG TYPE STRING,
VALTG TYPE STRING,
VALDT TYPE STRING,
INCOV TYPE STRING,
INCO2_L TYPE STRING,
INCO3_L TYPE STRING,
INCOV_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WEBINVOICEHCOM_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_WEBINVOICEHCOM_STR-VBELN sy-vline 
WA_WEBINVOICEHCOM_STR-FKART sy-vline 
WA_WEBINVOICEHCOM_STR-FKART_TEXT sy-vline 
WA_WEBINVOICEHCOM_STR-FKTYP sy-vline 
WA_WEBINVOICEHCOM_STR-FKTYP_TEXT sy-vline 
WA_WEBINVOICEHCOM_STR-VBTYP sy-vline 
WA_WEBINVOICEHCOM_STR-VBTYP_TEXT sy-vline 
WA_WEBINVOICEHCOM_STR-WAERK sy-vline 
WA_WEBINVOICEHCOM_STR-WAERK_ISO sy-vline 
WA_WEBINVOICEHCOM_STR-NETWR sy-vline 
WA_WEBINVOICEHCOM_STR-KUNAG sy-vline 
WA_WEBINVOICEHCOM_STR-KUNRG sy-vline 
WA_WEBINVOICEHCOM_STR-MWSBK sy-vline 
WA_WEBINVOICEHCOM_STR-FKSTO sy-vline 
WA_WEBINVOICEHCOM_STR-FKDAT sy-vline 
WA_WEBINVOICEHCOM_STR-INCO1 sy-vline 
WA_WEBINVOICEHCOM_STR-INCO1_TEXT sy-vline 
WA_WEBINVOICEHCOM_STR-INCO2 sy-vline 
WA_WEBINVOICEHCOM_STR-ZTERM sy-vline 
WA_WEBINVOICEHCOM_STR-ZTERM_TEXT sy-vline 
WA_WEBINVOICEHCOM_STR-BUKRS sy-vline 
WA_WEBINVOICEHCOM_STR-BUTXT sy-vline 
WA_WEBINVOICEHCOM_STR-XBLNR sy-vline 
WA_WEBINVOICEHCOM_STR-ZFBDT sy-vline 
WA_WEBINVOICEHCOM_STR-ZBDATE1 sy-vline 
WA_WEBINVOICEHCOM_STR-ZBDATE2 sy-vline 
WA_WEBINVOICEHCOM_STR-NETDATE sy-vline 
WA_WEBINVOICEHCOM_STR-ZBD1P sy-vline 
WA_WEBINVOICEHCOM_STR-ZBD2P sy-vline 
WA_WEBINVOICEHCOM_STR-VKORG sy-vline 
WA_WEBINVOICEHCOM_STR-VALTG sy-vline 
WA_WEBINVOICEHCOM_STR-VALDT sy-vline 
WA_WEBINVOICEHCOM_STR-INCOV sy-vline 
WA_WEBINVOICEHCOM_STR-INCO2_L sy-vline 
WA_WEBINVOICEHCOM_STR-INCO3_L sy-vline 
WA_WEBINVOICEHCOM_STR-INCOV_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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