ABAP Select data from SAP table FMZUGR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMZUGR
*  INTO TABLE @DATA(IT_FMZUGR2).
*--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_FMZUGR INDEX 1 INTO DATA(WA_FMZUGR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMZUGR>-MANDT = 1.
<FMZUGR>-GRUPPE = 1.
<FMZUGR>-KSTAR = 1.
<FMZUGR>-KARGR = 1.
<FMZUGR>-KOKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMZUGR-ABPER, sy-vline,
  WA_FMZUGR-ABGJR, sy-vline,
  WA_FMZUGR-GRFLD, sy-vline,
  WA_FMZUGR-FIKRS, sy-vline,
  WA_FMZUGR-FIPOS, sy-vline,
  WA_FMZUGR-FISTL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMZUGR 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_FMZUGR 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_FMZUGR INTO WA_FMZUGR.


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

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

*Conversion exit FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_FMZUGR-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMZUGR-FIPOS.
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_FMZUGR_STR, 
MANDT TYPE STRING,
GRUPPE TYPE STRING,
KSTAR TYPE STRING,
KARGR TYPE STRING,
KOKRS TYPE STRING,
ABPER TYPE STRING,
ABGJR TYPE STRING,
GRFLD TYPE STRING,
FIKRS TYPE STRING,
FIPOS TYPE STRING,
FISTL TYPE STRING,
FONDS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMZUGR_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_FMZUGR_STR-MANDT sy-vline 
WA_FMZUGR_STR-GRUPPE sy-vline 
WA_FMZUGR_STR-KSTAR sy-vline 
WA_FMZUGR_STR-KARGR sy-vline 
WA_FMZUGR_STR-KOKRS sy-vline 
WA_FMZUGR_STR-ABPER sy-vline 
WA_FMZUGR_STR-ABGJR sy-vline 
WA_FMZUGR_STR-GRFLD sy-vline 
WA_FMZUGR_STR-FIKRS sy-vline 
WA_FMZUGR_STR-FIPOS sy-vline 
WA_FMZUGR_STR-FISTL sy-vline 
WA_FMZUGR_STR-FONDS sy-vline      INTO ld_text SEPARATED BY SPACE.

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