ABAP Select data from SAP table CFMPG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CFMPG
*  INTO TABLE @DATA(IT_CFMPG2).
*--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_CFMPG INDEX 1 INTO DATA(WA_CFMPG2).


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

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

ENDLOOP.

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

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


*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_CFMPG-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CFMPG-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

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