ABAP Select data from SAP table FZNS_X4_V_T056A2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FZNS_X4_V_T056A2 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 FZNS_X4_V_T056A2. 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 FZNS_X4_V_T056A2 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_FZNS_X4_V_T056A2 TYPE STANDARD TABLE OF FZNS_X4_V_T056A2,
      WA_FZNS_X4_V_T056A2 TYPE FZNS_X4_V_T056A2,
      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: <FZNS_X4_V_T056A2> TYPE FZNS_X4_V_T056A2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FZNS_X4_V_T056A2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FZNS_X4_V_T056A2
  INTO TABLE IT_FZNS_X4_V_T056A2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FZNS_X4_V_T056A2
*  INTO TABLE @DATA(IT_FZNS_X4_V_T056A22).
*--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_FZNS_X4_V_T056A2 INDEX 1 INTO DATA(WA_FZNS_X4_V_T056A22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FZNS_X4_V_T056A2 ASSIGNING <FZNS_X4_V_T056A2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FZNS_X4_V_T056A2>-VZSKZ = 1.
<FZNS_X4_V_T056A2>-WAERS = 1.
<FZNS_X4_V_T056A2>-DATAB = 1.
<FZNS_X4_V_T056A2>-LFDNR = 1.
<FZNS_X4_V_T056A2>-BWART = 1.

ENDLOOP.

LOOP AT IT_FZNS_X4_V_T056A2 INTO WA_FZNS_X4_V_T056A2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FZNS_X4_V_T056A2-BTRGAB, sy-vline,
  WA_FZNS_X4_V_T056A2-ZUSCHLZINS, sy-vline,
  WA_FZNS_X4_V_T056A2-REFERENZ, sy-vline,
  WA_FZNS_X4_V_T056A2-PGEBUEHR, sy-vline,
  WA_FZNS_X4_V_T056A2-ANZAHL, sy-vline,
  WA_FZNS_X4_V_T056A2-ANZAHLAB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FZNS_X4_V_T056A2 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_FZNS_X4_V_T056A2 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_FZNS_X4_V_T056A2 INTO WA_FZNS_X4_V_T056A2.


*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 INVDT, internal->external for field DATAB
CALL FUNCTION 'CONVERSION_EXIT_INVDT_OUTPUT'
  EXPORTING
    input =                      WA_FZNS_X4_V_T056A2-DATAB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FZNS_X4_V_T056A2-DATAB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field BTRGAB
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_FZNS_X4_V_T056A2-BTRGAB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FZNS_X4_V_T056A2-BTRGAB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field PGEBUEHR
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_FZNS_X4_V_T056A2-PGEBUEHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FZNS_X4_V_T056A2-PGEBUEHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SALDO
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_FZNS_X4_V_T056A2-SALDO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FZNS_X4_V_T056A2-SALDO.
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_FZNS_X4_V_T056A2_STR, 
VZSKZ TYPE STRING,
WAERS TYPE STRING,
DATAB TYPE STRING,
LFDNR TYPE STRING,
BWART TYPE STRING,
BTRGAB TYPE STRING,
ZUSCHLZINS TYPE STRING,
REFERENZ TYPE STRING,
PGEBUEHR TYPE STRING,
ANZAHL TYPE STRING,
ANZAHLAB TYPE STRING,
BUCHREF TYPE STRING,
SALDO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FZNS_X4_V_T056A2_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_FZNS_X4_V_T056A2_STR-VZSKZ sy-vline 
WA_FZNS_X4_V_T056A2_STR-WAERS sy-vline 
WA_FZNS_X4_V_T056A2_STR-DATAB sy-vline 
WA_FZNS_X4_V_T056A2_STR-LFDNR sy-vline 
WA_FZNS_X4_V_T056A2_STR-BWART sy-vline 
WA_FZNS_X4_V_T056A2_STR-BTRGAB sy-vline 
WA_FZNS_X4_V_T056A2_STR-ZUSCHLZINS sy-vline 
WA_FZNS_X4_V_T056A2_STR-REFERENZ sy-vline 
WA_FZNS_X4_V_T056A2_STR-PGEBUEHR sy-vline 
WA_FZNS_X4_V_T056A2_STR-ANZAHL sy-vline 
WA_FZNS_X4_V_T056A2_STR-ANZAHLAB sy-vline 
WA_FZNS_X4_V_T056A2_STR-BUCHREF sy-vline 
WA_FZNS_X4_V_T056A2_STR-SALDO sy-vline      INTO ld_text SEPARATED BY SPACE.

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