ABAP Select data from SAP table FMEF_WD_S_NEIGHBORHOOD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMEF_WD_S_NEIGHBORHOOD
*  INTO TABLE @DATA(IT_FMEF_WD_S_NEIGHBORHOOD2).
*--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_FMEF_WD_S_NEIGHBORHOOD INDEX 1 INTO DATA(WA_FMEF_WD_S_NEIGHBORHOOD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMEF_WD_S_NEIGHBORHOOD>-BELNR = 1.
<FMEF_WD_S_NEIGHBORHOOD>-BLPOS = 1.
<FMEF_WD_S_NEIGHBORHOOD>-NEIGHTYPE = 1.
<FMEF_WD_S_NEIGHBORHOOD>-REFBLTYP = 1.
<FMEF_WD_S_NEIGHBORHOOD>-REFBELNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMEF_WD_S_NEIGHBORHOOD-REFBLPOS, sy-vline,
  WA_FMEF_WD_S_NEIGHBORHOOD-REFDOCSTATUS, sy-vline,
  WA_FMEF_WD_S_NEIGHBORHOOD-VRGNG, sy-vline,
  WA_FMEF_WD_S_NEIGHBORHOOD-STATS, sy-vline,
  WA_FMEF_WD_S_NEIGHBORHOOD-WTABB, sy-vline,
  WA_FMEF_WD_S_NEIGHBORHOOD-HWABB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMEF_WD_S_NEIGHBORHOOD 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_FMEF_WD_S_NEIGHBORHOOD 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_FMEF_WD_S_NEIGHBORHOOD INTO WA_FMEF_WD_S_NEIGHBORHOOD.


*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_FMEF_WD_S_NEIGHBORHOOD-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMEF_WD_S_NEIGHBORHOOD-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFBELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMEF_WD_S_NEIGHBORHOOD-REFBELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMEF_WD_S_NEIGHBORHOOD-REFBELNR.
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_FMEF_WD_S_NEIGHBORHOOD_STR, 
BELNR TYPE STRING,
BLPOS TYPE STRING,
NEIGHTYPE TYPE STRING,
REFBLTYP TYPE STRING,
REFBELNR TYPE STRING,
REFBLPOS TYPE STRING,
REFDOCSTATUS TYPE STRING,
VRGNG TYPE STRING,
STATS TYPE STRING,
WTABB TYPE STRING,
HWABB TYPE STRING,
WTABG TYPE STRING,
HWABG TYPE STRING,
WTAPP TYPE STRING,
HWAPP TYPE STRING,
WTNAP TYPE STRING,
HWNAP TYPE STRING,
BPENT TYPE STRING,
BTEXT TYPE STRING,
VRGTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMEF_WD_S_NEIGHBORHOOD_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_FMEF_WD_S_NEIGHBORHOOD_STR-BELNR sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-BLPOS sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-NEIGHTYPE sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-REFBLTYP sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-REFBELNR sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-REFBLPOS sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-REFDOCSTATUS sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-VRGNG sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-STATS sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-WTABB sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-HWABB sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-WTABG sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-HWABG sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-WTAPP sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-HWAPP sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-WTNAP sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-HWNAP sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-BPENT sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-BTEXT sy-vline 
WA_FMEF_WD_S_NEIGHBORHOOD_STR-VRGTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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