ABAP Select data from SAP table JVA_FDP_IV_S_INVOICEHEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVA_FDP_IV_S_INVOICEHEADER
*  INTO TABLE @DATA(IT_JVA_FDP_IV_S_INVOICEHEADER2).
*--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_JVA_FDP_IV_S_INVOICEHEADER INDEX 1 INTO DATA(WA_JVA_FDP_IV_S_INVOICEHEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVA_FDP_IV_S_INVOICEHEADER>-DOCUMENT_ID = 1.
<JVA_FDP_IV_S_INVOICEHEADER>-FISCALYEAR = 1.
<JVA_FDP_IV_S_INVOICEHEADER>-POSTINGPERIOD = 1.
<JVA_FDP_IV_S_INVOICEHEADER>-JOINTVENTURE = 1.
<JVA_FDP_IV_S_INVOICEHEADER>-JOINTVENTURENAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVA_FDP_IV_S_INVOICEHEADER-JOINTVENTUREFUNDINGCRCY, sy-vline,
  WA_JVA_FDP_IV_S_INVOICEHEADER-INVOICENUMBER, sy-vline,
  WA_JVA_FDP_IV_S_INVOICEHEADER-LANGUAGE, sy-vline,
  WA_JVA_FDP_IV_S_INVOICEHEADER-TOTALID, sy-vline,
  WA_JVA_FDP_IV_S_INVOICEHEADER-JVAFDPCUSTFIELD1, sy-vline,
  WA_JVA_FDP_IV_S_INVOICEHEADER-JVAFDPCUSTFIELD2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JVA_FDP_IV_S_INVOICEHEADER 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_JVA_FDP_IV_S_INVOICEHEADER 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_JVA_FDP_IV_S_INVOICEHEADER INTO WA_JVA_FDP_IV_S_INVOICEHEADER.


*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 FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_JVA_FDP_IV_S_INVOICEHEADER-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVA_FDP_IV_S_INVOICEHEADER-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_JVA_FDP_IV_S_INVOICEHEADER-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVA_FDP_IV_S_INVOICEHEADER-LANGUAGE.
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_JVA_FDP_IV_S_INVOICEHEADER_STR, 
DOCUMENT_ID TYPE STRING,
FISCALYEAR TYPE STRING,
POSTINGPERIOD TYPE STRING,
JOINTVENTURE TYPE STRING,
JOINTVENTURENAME TYPE STRING,
JOINTVENTUREFUNDINGCRCY TYPE STRING,
INVOICENUMBER TYPE STRING,
LANGUAGE TYPE STRING,
TOTALID TYPE STRING,
JVAFDPCUSTFIELD1 TYPE STRING,
JVAFDPCUSTFIELD2 TYPE STRING,
JVAFDPCUSTFIELD3 TYPE STRING,
JVAFDPCUSTFIELD4 TYPE STRING,
JVAFDPCUSTFIELD5 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVA_FDP_IV_S_INVOICEHEADER_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_JVA_FDP_IV_S_INVOICEHEADER_STR-DOCUMENT_ID sy-vline 
WA_JVA_FDP_IV_S_INVOICEHEADER_STR-FISCALYEAR sy-vline 
WA_JVA_FDP_IV_S_INVOICEHEADER_STR-POSTINGPERIOD sy-vline 
WA_JVA_FDP_IV_S_INVOICEHEADER_STR-JOINTVENTURE sy-vline 
WA_JVA_FDP_IV_S_INVOICEHEADER_STR-JOINTVENTURENAME sy-vline 
WA_JVA_FDP_IV_S_INVOICEHEADER_STR-JOINTVENTUREFUNDINGCRCY sy-vline 
WA_JVA_FDP_IV_S_INVOICEHEADER_STR-INVOICENUMBER sy-vline 
WA_JVA_FDP_IV_S_INVOICEHEADER_STR-LANGUAGE sy-vline 
WA_JVA_FDP_IV_S_INVOICEHEADER_STR-TOTALID sy-vline 
WA_JVA_FDP_IV_S_INVOICEHEADER_STR-JVAFDPCUSTFIELD1 sy-vline 
WA_JVA_FDP_IV_S_INVOICEHEADER_STR-JVAFDPCUSTFIELD2 sy-vline 
WA_JVA_FDP_IV_S_INVOICEHEADER_STR-JVAFDPCUSTFIELD3 sy-vline 
WA_JVA_FDP_IV_S_INVOICEHEADER_STR-JVAFDPCUSTFIELD4 sy-vline 
WA_JVA_FDP_IV_S_INVOICEHEADER_STR-JVAFDPCUSTFIELD5 sy-vline      INTO ld_text SEPARATED BY SPACE.

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