ABAP Select data from SAP table LOCAFVC_PS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LOCAFVC_PS
*  INTO TABLE @DATA(IT_LOCAFVC_PS2).
*--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_LOCAFVC_PS INDEX 1 INTO DATA(WA_LOCAFVC_PS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LOCAFVC_PS>-MANDT = 1.
<LOCAFVC_PS>-AUFPL = 1.
<LOCAFVC_PS>-APLZL = 1.
<LOCAFVC_PS>-VORNR = 1.
<LOCAFVC_PS>-OBJNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LOCAFVC_PS-PROJN, sy-vline,
  WA_LOCAFVC_PS-SUMNR, sy-vline,
  WA_LOCAFVC_PS-WERKS, sy-vline,
  WA_LOCAFVC_PS-BUKRS, sy-vline,
  WA_LOCAFVC_PS-GSBER, sy-vline,
  WA_LOCAFVC_PS-SCOPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LOCAFVC_PS 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_LOCAFVC_PS 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_LOCAFVC_PS INTO WA_LOCAFVC_PS.


*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 NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_LOCAFVC_PS-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LOCAFVC_PS-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PROJN
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_LOCAFVC_PS-PROJN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LOCAFVC_PS-PROJN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SCOPE, internal->external for field SCOPE
CALL FUNCTION 'CONVERSION_EXIT_SCOPE_OUTPUT'
  EXPORTING
    input =                      WA_LOCAFVC_PS-SCOPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LOCAFVC_PS-SCOPE.
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_LOCAFVC_PS_STR, 
MANDT TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
VORNR TYPE STRING,
OBJNR TYPE STRING,
PROJN TYPE STRING,
SUMNR TYPE STRING,
WERKS TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
SCOPE TYPE STRING,
LTXA1 TYPE STRING,
OWAER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LOCAFVC_PS_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_LOCAFVC_PS_STR-MANDT sy-vline 
WA_LOCAFVC_PS_STR-AUFPL sy-vline 
WA_LOCAFVC_PS_STR-APLZL sy-vline 
WA_LOCAFVC_PS_STR-VORNR sy-vline 
WA_LOCAFVC_PS_STR-OBJNR sy-vline 
WA_LOCAFVC_PS_STR-PROJN sy-vline 
WA_LOCAFVC_PS_STR-SUMNR sy-vline 
WA_LOCAFVC_PS_STR-WERKS sy-vline 
WA_LOCAFVC_PS_STR-BUKRS sy-vline 
WA_LOCAFVC_PS_STR-GSBER sy-vline 
WA_LOCAFVC_PS_STR-SCOPE sy-vline 
WA_LOCAFVC_PS_STR-LTXA1 sy-vline 
WA_LOCAFVC_PS_STR-OWAER sy-vline      INTO ld_text SEPARATED BY SPACE.

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