ABAP Select data from SAP table FMEUF_FMIFIIT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMEUF_FMIFIIT
*  INTO TABLE @DATA(IT_FMEUF_FMIFIIT2).
*--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_FMEUF_FMIFIIT INDEX 1 INTO DATA(WA_FMEUF_FMIFIIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMEUF_FMIFIIT>-WRTTP = 1.
<FMEUF_FMIFIIT>-BTART = 1.
<FMEUF_FMIFIIT>-STATS = 1.
<FMEUF_FMIFIIT>-TRBTR = 1.
<FMEUF_FMIFIIT>-ZHLDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMEUF_FMIFIIT-TWAER, sy-vline,
  WA_FMEUF_FMIFIIT-KNBELNR, sy-vline,
  WA_FMEUF_FMIFIIT-KNGJAHR, sy-vline,
  WA_FMEUF_FMIFIIT-KNBUZEI, sy-vline,
  WA_FMEUF_FMIFIIT-BUKRS, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_FMEUF_FMIFIIT 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_FMEUF_FMIFIIT 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_FMEUF_FMIFIIT INTO WA_FMEUF_FMIFIIT.


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

*Conversion exit GJAHR, internal->external for field KNGJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMEUF_FMIFIIT-KNGJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMEUF_FMIFIIT-KNGJAHR.
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_FMEUF_FMIFIIT_STR, 
WRTTP TYPE STRING,
BTART TYPE STRING,
STATS TYPE STRING,
TRBTR TYPE STRING,
ZHLDT TYPE STRING,
TWAER TYPE STRING,
KNBELNR TYPE STRING,
KNGJAHR TYPE STRING,
KNBUZEI TYPE STRING,
BUKRS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMEUF_FMIFIIT_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_FMEUF_FMIFIIT_STR-WRTTP sy-vline 
WA_FMEUF_FMIFIIT_STR-BTART sy-vline 
WA_FMEUF_FMIFIIT_STR-STATS sy-vline 
WA_FMEUF_FMIFIIT_STR-TRBTR sy-vline 
WA_FMEUF_FMIFIIT_STR-ZHLDT sy-vline 
WA_FMEUF_FMIFIIT_STR-TWAER sy-vline 
WA_FMEUF_FMIFIIT_STR-KNBELNR sy-vline 
WA_FMEUF_FMIFIIT_STR-KNGJAHR sy-vline 
WA_FMEUF_FMIFIIT_STR-KNBUZEI sy-vline 
WA_FMEUF_FMIFIIT_STR-BUKRS sy-vline      INTO ld_text SEPARATED BY SPACE.

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