ABAP Select data from SAP table FMPOSDEV_ALV into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMPOSDEV_ALV
*  INTO TABLE @DATA(IT_FMPOSDEV_ALV2).
*--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_FMPOSDEV_ALV INDEX 1 INTO DATA(WA_FMPOSDEV_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMPOSDEV_ALV>-COLOR = 1.
<FMPOSDEV_ALV>-BELNR = 1.
<FMPOSDEV_ALV>-BLPOS = 1.
<FMPOSDEV_ALV>-WTSUPP = 1.
<FMPOSDEV_ALV>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMPOSDEV_ALV-HWSUPP, sy-vline,
  WA_FMPOSDEV_ALV-HWAER, sy-vline,
  WA_FMPOSDEV_ALV-WTGN, sy-vline,
  WA_FMPOSDEV_ALV-HWGN, sy-vline,
  WA_FMPOSDEV_ALV-WTNG, sy-vline,
  WA_FMPOSDEV_ALV-HWNG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMPOSDEV_ALV 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_FMPOSDEV_ALV 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_FMPOSDEV_ALV INTO WA_FMPOSDEV_ALV.


*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_FMPOSDEV_ALV-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMPOSDEV_ALV-BELNR.
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_FMPOSDEV_ALV_STR, 
COLOR TYPE STRING,
BELNR TYPE STRING,
BLPOS TYPE STRING,
WTSUPP TYPE STRING,
WAERS TYPE STRING,
HWSUPP TYPE STRING,
HWAER TYPE STRING,
WTGN TYPE STRING,
HWGN TYPE STRING,
WTNG TYPE STRING,
HWNG TYPE STRING,
BPENT TYPE STRING,
BLDAT TYPE STRING,
ERFAS TYPE STRING,
BTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMPOSDEV_ALV_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_FMPOSDEV_ALV_STR-COLOR sy-vline 
WA_FMPOSDEV_ALV_STR-BELNR sy-vline 
WA_FMPOSDEV_ALV_STR-BLPOS sy-vline 
WA_FMPOSDEV_ALV_STR-WTSUPP sy-vline 
WA_FMPOSDEV_ALV_STR-WAERS sy-vline 
WA_FMPOSDEV_ALV_STR-HWSUPP sy-vline 
WA_FMPOSDEV_ALV_STR-HWAER sy-vline 
WA_FMPOSDEV_ALV_STR-WTGN sy-vline 
WA_FMPOSDEV_ALV_STR-HWGN sy-vline 
WA_FMPOSDEV_ALV_STR-WTNG sy-vline 
WA_FMPOSDEV_ALV_STR-HWNG sy-vline 
WA_FMPOSDEV_ALV_STR-BPENT sy-vline 
WA_FMPOSDEV_ALV_STR-BLDAT sy-vline 
WA_FMPOSDEV_ALV_STR-ERFAS sy-vline 
WA_FMPOSDEV_ALV_STR-BTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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