ABAP Select data from SAP table FMPG 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 FMPG 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 FMPG. 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 FMPG 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_FMPG TYPE STANDARD TABLE OF FMPG,
      WA_FMPG TYPE FMPG,
      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: <FMPG> TYPE FMPG.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMPG
*  INTO TABLE @DATA(IT_FMPG2).
*--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_FMPG INDEX 1 INTO DATA(WA_FMPG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMPG>-MANDT = 1.
<FMPG>-FIKRS = 1.
<FMPG>-VARNT = 1.
<FMPG>-GJAHR = 1.
<FMPG>-FIPEX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMPG-PPLAN, sy-vline,
  WA_FMPG-POSIT, sy-vline,
  WA_FMPG-FICTR, sy-vline,
  WA_FMPG-VPTYP, sy-vline,
  WA_FMPG-SNTYP, sy-vline,
  WA_FMPG-SNROL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMPG 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_FMPG 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_FMPG INTO WA_FMPG.


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

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_FMPG-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMPG-FIPEX.
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_FMPG_STR, 
MANDT TYPE STRING,
FIKRS TYPE STRING,
VARNT TYPE STRING,
GJAHR TYPE STRING,
FIPEX TYPE STRING,
PPLAN TYPE STRING,
POSIT TYPE STRING,
FICTR TYPE STRING,
VPTYP TYPE STRING,
SNTYP TYPE STRING,
SNROL TYPE STRING,
KRGRP TYPE STRING,
STATS TYPE STRING,
NCBUD TYPE STRING,
AUGRP TYPE STRING,
NDAKZ TYPE STRING,
AZPKZ TYPE STRING,
DRUCK TYPE STRING,
CFFLG TYPE STRING,
CVFLG TYPE STRING,
BEZIRK TYPE STRING,
BSAMT TYPE STRING,
UBFLG TYPE STRING,
HSFLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMPG_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_FMPG_STR-MANDT sy-vline 
WA_FMPG_STR-FIKRS sy-vline 
WA_FMPG_STR-VARNT sy-vline 
WA_FMPG_STR-GJAHR sy-vline 
WA_FMPG_STR-FIPEX sy-vline 
WA_FMPG_STR-PPLAN sy-vline 
WA_FMPG_STR-POSIT sy-vline 
WA_FMPG_STR-FICTR sy-vline 
WA_FMPG_STR-VPTYP sy-vline 
WA_FMPG_STR-SNTYP sy-vline 
WA_FMPG_STR-SNROL sy-vline 
WA_FMPG_STR-KRGRP sy-vline 
WA_FMPG_STR-STATS sy-vline 
WA_FMPG_STR-NCBUD sy-vline 
WA_FMPG_STR-AUGRP sy-vline 
WA_FMPG_STR-NDAKZ sy-vline 
WA_FMPG_STR-AZPKZ sy-vline 
WA_FMPG_STR-DRUCK sy-vline 
WA_FMPG_STR-CFFLG sy-vline 
WA_FMPG_STR-CVFLG sy-vline 
WA_FMPG_STR-BEZIRK sy-vline 
WA_FMPG_STR-BSAMT sy-vline 
WA_FMPG_STR-UBFLG sy-vline 
WA_FMPG_STR-HSFLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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