ABAP Select data from SAP table FIEU_S_MMINV_I into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIEU_S_MMINV_I
*  INTO TABLE @DATA(IT_FIEU_S_MMINV_I2).
*--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_FIEU_S_MMINV_I INDEX 1 INTO DATA(WA_FIEU_S_MMINV_I2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIEU_S_MMINV_I>-BELNR = 1.
<FIEU_S_MMINV_I>-GJAHR = 1.
<FIEU_S_MMINV_I>-BUZEI = 1.
<FIEU_S_MMINV_I>-HKONT = 1.
<FIEU_S_MMINV_I>-EBELN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIEU_S_MMINV_I-EBELP, sy-vline,
  WA_FIEU_S_MMINV_I-BEDAT, sy-vline,
  WA_FIEU_S_MMINV_I-GOODSERVID, sy-vline,
  WA_FIEU_S_MMINV_I-MATNR, sy-vline,
  WA_FIEU_S_MMINV_I-SGTXT, sy-vline,
  WA_FIEU_S_MMINV_I-MENGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIEU_S_MMINV_I 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_FIEU_S_MMINV_I 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_FIEU_S_MMINV_I INTO WA_FIEU_S_MMINV_I.


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

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_FIEU_S_MMINV_I-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIEU_S_MMINV_I-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FIEU_S_MMINV_I-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIEU_S_MMINV_I-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BSTME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FIEU_S_MMINV_I-BSTME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIEU_S_MMINV_I-BSTME.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field LFGJA
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FIEU_S_MMINV_I-LFGJA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIEU_S_MMINV_I-LFGJA.
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_FIEU_S_MMINV_I_STR, 
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
HKONT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
BEDAT TYPE STRING,
GOODSERVID TYPE STRING,
MATNR TYPE STRING,
SGTXT TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
BSTME TYPE STRING,
UMREF TYPE STRING,
WAERS TYPE STRING,
NETPR TYPE STRING,
WRBTR TYPE STRING,
HWAER TYPE STRING,
DMBTR TYPE STRING,
KURSF TYPE STRING,
SHKZG TYPE STRING,
MWART TYPE STRING,
TAX_CODE_OFFICIA TYPE STRING,
MWSKZ TYPE STRING,
KBETR TYPE STRING,
HWBAS TYPE STRING,
TAX_BASE_DESC TYPE STRING,
HWSTE TYPE STRING,
FWSTE TYPE STRING,
STMDT TYPE STRING,
LFBNR TYPE STRING,
LFGJA TYPE STRING,
LFPOS TYPE STRING,
STGRD TYPE STRING,
SHIPITEMDET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIEU_S_MMINV_I_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_FIEU_S_MMINV_I_STR-BELNR sy-vline 
WA_FIEU_S_MMINV_I_STR-GJAHR sy-vline 
WA_FIEU_S_MMINV_I_STR-BUZEI sy-vline 
WA_FIEU_S_MMINV_I_STR-HKONT sy-vline 
WA_FIEU_S_MMINV_I_STR-EBELN sy-vline 
WA_FIEU_S_MMINV_I_STR-EBELP sy-vline 
WA_FIEU_S_MMINV_I_STR-BEDAT sy-vline 
WA_FIEU_S_MMINV_I_STR-GOODSERVID sy-vline 
WA_FIEU_S_MMINV_I_STR-MATNR sy-vline 
WA_FIEU_S_MMINV_I_STR-SGTXT sy-vline 
WA_FIEU_S_MMINV_I_STR-MENGE sy-vline 
WA_FIEU_S_MMINV_I_STR-MEINS sy-vline 
WA_FIEU_S_MMINV_I_STR-BSTME sy-vline 
WA_FIEU_S_MMINV_I_STR-UMREF sy-vline 
WA_FIEU_S_MMINV_I_STR-WAERS sy-vline 
WA_FIEU_S_MMINV_I_STR-NETPR sy-vline 
WA_FIEU_S_MMINV_I_STR-WRBTR sy-vline 
WA_FIEU_S_MMINV_I_STR-HWAER sy-vline 
WA_FIEU_S_MMINV_I_STR-DMBTR sy-vline 
WA_FIEU_S_MMINV_I_STR-KURSF sy-vline 
WA_FIEU_S_MMINV_I_STR-SHKZG sy-vline 
WA_FIEU_S_MMINV_I_STR-MWART sy-vline 
WA_FIEU_S_MMINV_I_STR-TAX_CODE_OFFICIA sy-vline 
WA_FIEU_S_MMINV_I_STR-MWSKZ sy-vline 
WA_FIEU_S_MMINV_I_STR-KBETR sy-vline 
WA_FIEU_S_MMINV_I_STR-HWBAS sy-vline 
WA_FIEU_S_MMINV_I_STR-TAX_BASE_DESC sy-vline 
WA_FIEU_S_MMINV_I_STR-HWSTE sy-vline 
WA_FIEU_S_MMINV_I_STR-FWSTE sy-vline 
WA_FIEU_S_MMINV_I_STR-STMDT sy-vline 
WA_FIEU_S_MMINV_I_STR-LFBNR sy-vline 
WA_FIEU_S_MMINV_I_STR-LFGJA sy-vline 
WA_FIEU_S_MMINV_I_STR-LFPOS sy-vline 
WA_FIEU_S_MMINV_I_STR-STGRD sy-vline 
WA_FIEU_S_MMINV_I_STR-SHIPITEMDET sy-vline      INTO ld_text SEPARATED BY SPACE.

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