ABAP Select data from SAP table PMCO_KGR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMCO_KGR
*  INTO TABLE @DATA(IT_PMCO_KGR2).
*--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_PMCO_KGR INDEX 1 INTO DATA(WA_PMCO_KGR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMCO_KGR>-AUFNR = 1.
<PMCO_KGR>-BELTP = 1.
<PMCO_KGR>-ACPOS = 1.
<PMCO_KGR>-BEMOT = 1.
<PMCO_KGR>-VORGA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMCO_KGR-IKOSTENKGR, sy-vline,
  WA_PMCO_KGR-PKOSTENKGR, sy-vline,
  WA_PMCO_KGR-SKOSTENKGR, sy-vline,
  WA_PMCO_KGR-IERTRAGKGR, sy-vline,
  WA_PMCO_KGR-PERTRAGKGR, sy-vline,
  WA_PMCO_KGR-SERTRAGKGR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMCO_KGR 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_PMCO_KGR 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_PMCO_KGR INTO WA_PMCO_KGR.


*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 AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PMCO_KGR-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMCO_KGR-AUFNR.
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_PMCO_KGR_STR, 
AUFNR TYPE STRING,
BELTP TYPE STRING,
ACPOS TYPE STRING,
BEMOT TYPE STRING,
VORGA TYPE STRING,
IKOSTENKGR TYPE STRING,
PKOSTENKGR TYPE STRING,
SKOSTENKGR TYPE STRING,
IERTRAGKGR TYPE STRING,
PERTRAGKGR TYPE STRING,
SERTRAGKGR TYPE STRING,
IGESAMTKGR TYPE STRING,
PGESAMTKGR TYPE STRING,
SGESAMTKGR TYPE STRING,
WAERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMCO_KGR_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_PMCO_KGR_STR-AUFNR sy-vline 
WA_PMCO_KGR_STR-BELTP sy-vline 
WA_PMCO_KGR_STR-ACPOS sy-vline 
WA_PMCO_KGR_STR-BEMOT sy-vline 
WA_PMCO_KGR_STR-VORGA sy-vline 
WA_PMCO_KGR_STR-IKOSTENKGR sy-vline 
WA_PMCO_KGR_STR-PKOSTENKGR sy-vline 
WA_PMCO_KGR_STR-SKOSTENKGR sy-vline 
WA_PMCO_KGR_STR-IERTRAGKGR sy-vline 
WA_PMCO_KGR_STR-PERTRAGKGR sy-vline 
WA_PMCO_KGR_STR-SERTRAGKGR sy-vline 
WA_PMCO_KGR_STR-IGESAMTKGR sy-vline 
WA_PMCO_KGR_STR-PGESAMTKGR sy-vline 
WA_PMCO_KGR_STR-SGESAMTKGR sy-vline 
WA_PMCO_KGR_STR-WAERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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