ABAP Select data from SAP table FMIFIHD into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FMIFIHD 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 FMIFIHD. 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 FMIFIHD 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_FMIFIHD TYPE STANDARD TABLE OF FMIFIHD,
      WA_FMIFIHD TYPE FMIFIHD,
      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: <FMIFIHD> TYPE FMIFIHD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMIFIHD
*  INTO TABLE @DATA(IT_FMIFIHD2).
*--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_FMIFIHD INDEX 1 INTO DATA(WA_FMIFIHD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMIFIHD>-MANDT = 1.
<FMIFIHD>-FMBELNR = 1.
<FMIFIHD>-FIKRS = 1.
<FMIFIHD>-BUDAT = 1.
<FMIFIHD>-BLDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMIFIHD-BUKRS, sy-vline,
  WA_FMIFIHD-BLART, sy-vline,
  WA_FMIFIHD-VORGN, sy-vline,
  WA_FMIFIHD-BKTXT, sy-vline,
  WA_FMIFIHD-LIFNR, sy-vline,
  WA_FMIFIHD-KUNNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMIFIHD 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_FMIFIHD 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_FMIFIHD INTO WA_FMIFIHD.


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

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

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

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

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

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

*Conversion exit GJAHR, internal->external for field REFGJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMIFIHD-REFGJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMIFIHD-REFGJ.
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_FMIFIHD_STR, 
MANDT TYPE STRING,
FMBELNR TYPE STRING,
FIKRS TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
BUKRS TYPE STRING,
BLART TYPE STRING,
VORGN TYPE STRING,
BKTXT TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
AWTYP TYPE STRING,
AWREF TYPE STRING,
AWORG TYPE STRING,
AWSYS TYPE STRING,
XREVS TYPE STRING,
REFBN TYPE STRING,
REFBK TYPE STRING,
REFGJ TYPE STRING,
LOEKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMIFIHD_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_FMIFIHD_STR-MANDT sy-vline 
WA_FMIFIHD_STR-FMBELNR sy-vline 
WA_FMIFIHD_STR-FIKRS sy-vline 
WA_FMIFIHD_STR-BUDAT sy-vline 
WA_FMIFIHD_STR-BLDAT sy-vline 
WA_FMIFIHD_STR-BUKRS sy-vline 
WA_FMIFIHD_STR-BLART sy-vline 
WA_FMIFIHD_STR-VORGN sy-vline 
WA_FMIFIHD_STR-BKTXT sy-vline 
WA_FMIFIHD_STR-LIFNR sy-vline 
WA_FMIFIHD_STR-KUNNR sy-vline 
WA_FMIFIHD_STR-AWTYP sy-vline 
WA_FMIFIHD_STR-AWREF sy-vline 
WA_FMIFIHD_STR-AWORG sy-vline 
WA_FMIFIHD_STR-AWSYS sy-vline 
WA_FMIFIHD_STR-XREVS sy-vline 
WA_FMIFIHD_STR-REFBN sy-vline 
WA_FMIFIHD_STR-REFBK sy-vline 
WA_FMIFIHD_STR-REFGJ sy-vline 
WA_FMIFIHD_STR-LOEKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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