ABAP Select data from SAP table FDZA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FDZA
*  INTO TABLE @DATA(IT_FDZA2).
*--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_FDZA INDEX 1 INTO DATA(WA_FDZA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FDZA>-MANDT = 1.
<FDZA>-KEYNO = 1.
<FDZA>-BUKRS = 1.
<FDZA>-BELNR = 1.
<FDZA>-GJAHR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FDZA-BUZEI, sy-vline,
  WA_FDZA-GSBER, sy-vline,
  WA_FDZA-KOART, sy-vline,
  WA_FDZA-PARNO, sy-vline,
  WA_FDZA-GRUPP, sy-vline,
  WA_FDZA-BNKKO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FDZA 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_FDZA 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_FDZA INTO WA_FDZA.


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

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

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

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

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

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

*Conversion exit AC152, internal->external for field WRSHB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_FDZA-WRSHB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDZA-WRSHB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field DMSHB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_FDZA-DMSHB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDZA-DMSHB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GGRUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDZA-GGRUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDZA-GGRUP.
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_FDZA_STR, 
MANDT TYPE STRING,
KEYNO TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
GSBER TYPE STRING,
KOART TYPE STRING,
PARNO TYPE STRING,
GRUPP TYPE STRING,
BNKKO TYPE STRING,
EBENE TYPE STRING,
DATUM TYPE STRING,
DISPW TYPE STRING,
WRSHB TYPE STRING,
DMSHB TYPE STRING,
GBUKR TYPE STRING,
GGRUP TYPE STRING,
GVALT TYPE STRING,
GEBEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FDZA_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_FDZA_STR-MANDT sy-vline 
WA_FDZA_STR-KEYNO sy-vline 
WA_FDZA_STR-BUKRS sy-vline 
WA_FDZA_STR-BELNR sy-vline 
WA_FDZA_STR-GJAHR sy-vline 
WA_FDZA_STR-BUZEI sy-vline 
WA_FDZA_STR-GSBER sy-vline 
WA_FDZA_STR-KOART sy-vline 
WA_FDZA_STR-PARNO sy-vline 
WA_FDZA_STR-GRUPP sy-vline 
WA_FDZA_STR-BNKKO sy-vline 
WA_FDZA_STR-EBENE sy-vline 
WA_FDZA_STR-DATUM sy-vline 
WA_FDZA_STR-DISPW sy-vline 
WA_FDZA_STR-WRSHB sy-vline 
WA_FDZA_STR-DMSHB sy-vline 
WA_FDZA_STR-GBUKR sy-vline 
WA_FDZA_STR-GGRUP sy-vline 
WA_FDZA_STR-GVALT sy-vline 
WA_FDZA_STR-GEBEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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