ABAP Select data from SAP table M_SHFLF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM M_SHFLF
*  INTO TABLE @DATA(IT_M_SHFLF2).
*--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_M_SHFLF INDEX 1 INTO DATA(WA_M_SHFLF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<M_SHFLF>-MANDT = 1.
<M_SHFLF>-INTRENO = 1.
<M_SHFLF>-DGUELBIS = 1.
<M_SHFLF>-BUKRS = 1.
<M_SHFLF>-SWENR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_M_SHFLF-SGRNR, sy-vline,
  WA_M_SHFLF-SGENR, sy-vline,
  WA_M_SHFLF-FLID, sy-vline,
  WA_M_SHFLF-DGUELAB, sy-vline,
  WA_M_SHFLF-SGEBT, sy-vline,
  WA_M_SHFLF-SSTOCKW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_M_SHFLF 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_M_SHFLF 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_M_SHFLF INTO WA_M_SHFLF.


*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 SWENR, internal->external for field SWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_M_SHFLF-SWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_M_SHFLF-SWENR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit SGENR, internal->external for field SGENR
CALL FUNCTION 'CONVERSION_EXIT_SGENR_OUTPUT'
  EXPORTING
    input =                      WA_M_SHFLF-SGENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_M_SHFLF-SGENR.
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_M_SHFLF_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
DGUELBIS TYPE STRING,
BUKRS TYPE STRING,
SWENR TYPE STRING,
SGRNR TYPE STRING,
SGENR TYPE STRING,
FLID TYPE STRING,
DGUELAB TYPE STRING,
SGEBT TYPE STRING,
SSTOCKW TYPE STRING,
FLAA TYPE STRING,
DTRAGFKT TYPE STRING,
DRAUMHOE TYPE STRING,
UMBRAUM TYPE STRING,
FLLBEZ TYPE STRING,
FLOT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_M_SHFLF_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_M_SHFLF_STR-MANDT sy-vline 
WA_M_SHFLF_STR-INTRENO sy-vline 
WA_M_SHFLF_STR-DGUELBIS sy-vline 
WA_M_SHFLF_STR-BUKRS sy-vline 
WA_M_SHFLF_STR-SWENR sy-vline 
WA_M_SHFLF_STR-SGRNR sy-vline 
WA_M_SHFLF_STR-SGENR sy-vline 
WA_M_SHFLF_STR-FLID sy-vline 
WA_M_SHFLF_STR-DGUELAB sy-vline 
WA_M_SHFLF_STR-SGEBT sy-vline 
WA_M_SHFLF_STR-SSTOCKW sy-vline 
WA_M_SHFLF_STR-FLAA sy-vline 
WA_M_SHFLF_STR-DTRAGFKT sy-vline 
WA_M_SHFLF_STR-DRAUMHOE sy-vline 
WA_M_SHFLF_STR-UMBRAUM sy-vline 
WA_M_SHFLF_STR-FLLBEZ sy-vline 
WA_M_SHFLF_STR-FLOT sy-vline      INTO ld_text SEPARATED BY SPACE.

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