ABAP Select data from SAP table FMSAMNUMERICS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMSAMNUMERICS
*  INTO TABLE @DATA(IT_FMSAMNUMERICS2).
*--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_FMSAMNUMERICS INDEX 1 INTO DATA(WA_FMSAMNUMERICS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMSAMNUMERICS>-NUMCODE01 = 1.
<FMSAMNUMERICS>-NUMCODE02 = 1.
<FMSAMNUMERICS>-NUMCODE03 = 1.
<FMSAMNUMERICS>-NUMCODE04 = 1.
<FMSAMNUMERICS>-NUMCODE05 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMSAMNUMERICS-NUMCODE06, sy-vline,
  WA_FMSAMNUMERICS-NUMCODE07, sy-vline,
  WA_FMSAMNUMERICS-NUMCODE08, sy-vline,
  WA_FMSAMNUMERICS-NUMCODE09, sy-vline,
  WA_FMSAMNUMERICS-NUMCODE10, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_FMSAMNUMERICS 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_FMSAMNUMERICS 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_FMSAMNUMERICS INTO WA_FMSAMNUMERICS.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FMSAMNUMERICS_STR, 
NUMCODE01 TYPE STRING,
NUMCODE02 TYPE STRING,
NUMCODE03 TYPE STRING,
NUMCODE04 TYPE STRING,
NUMCODE05 TYPE STRING,
NUMCODE06 TYPE STRING,
NUMCODE07 TYPE STRING,
NUMCODE08 TYPE STRING,
NUMCODE09 TYPE STRING,
NUMCODE10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMSAMNUMERICS_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_FMSAMNUMERICS_STR-NUMCODE01 sy-vline 
WA_FMSAMNUMERICS_STR-NUMCODE02 sy-vline 
WA_FMSAMNUMERICS_STR-NUMCODE03 sy-vline 
WA_FMSAMNUMERICS_STR-NUMCODE04 sy-vline 
WA_FMSAMNUMERICS_STR-NUMCODE05 sy-vline 
WA_FMSAMNUMERICS_STR-NUMCODE06 sy-vline 
WA_FMSAMNUMERICS_STR-NUMCODE07 sy-vline 
WA_FMSAMNUMERICS_STR-NUMCODE08 sy-vline 
WA_FMSAMNUMERICS_STR-NUMCODE09 sy-vline 
WA_FMSAMNUMERICS_STR-NUMCODE10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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