ABAP Select data from SAP table COM_INFO 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 COM_INFO 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 COM_INFO. 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 COM_INFO 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_COM_INFO TYPE STANDARD TABLE OF COM_INFO,
      WA_COM_INFO TYPE COM_INFO,
      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: <COM_INFO> TYPE COM_INFO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COM_INFO
*  INTO TABLE @DATA(IT_COM_INFO2).
*--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_COM_INFO INDEX 1 INTO DATA(WA_COM_INFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COM_INFO>-VPLTY = 1.
<COM_INFO>-VPLNR = 1.
<COM_INFO>-VPLAL = 1.
<COM_INFO>-IDENT = 1.
<COM_INFO>-IDENT_REF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COM_INFO-HERKUNFT, sy-vline,
  WA_COM_INFO-DATUB, sy-vline,
  WA_COM_INFO-AENNR_AUS, sy-vline,
  WA_COM_INFO-MATNR, sy-vline,
  WA_COM_INFO-WERKS, sy-vline,
  WA_COM_INFO-MAKTX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COM_INFO 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_COM_INFO 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_COM_INFO INTO WA_COM_INFO.


*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 VPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COM_INFO-VPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COM_INFO-VPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VPLAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COM_INFO-VPLAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COM_INFO-VPLAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR_AUS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COM_INFO-AENNR_AUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COM_INFO-AENNR_AUS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_COM_INFO-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COM_INFO-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COM_INFO-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COM_INFO-MEINS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field BOMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_COM_INFO-BOMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COM_INFO-BOMAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field IDNRK
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_COM_INFO-IDNRK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COM_INFO-IDNRK.
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_COM_INFO_STR, 
VPLTY TYPE STRING,
VPLNR TYPE STRING,
VPLAL TYPE STRING,
IDENT TYPE STRING,
IDENT_REF TYPE STRING,
HERKUNFT TYPE STRING,
DATUB TYPE STRING,
AENNR_AUS TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
MAKTX TYPE STRING,
POSNR TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
IUPOS TYPE STRING,
IEBOR TYPE STRING,
BOMAT TYPE STRING,
DBSKZ TYPE STRING,
IDNRK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COM_INFO_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_COM_INFO_STR-VPLTY sy-vline 
WA_COM_INFO_STR-VPLNR sy-vline 
WA_COM_INFO_STR-VPLAL sy-vline 
WA_COM_INFO_STR-IDENT sy-vline 
WA_COM_INFO_STR-IDENT_REF sy-vline 
WA_COM_INFO_STR-HERKUNFT sy-vline 
WA_COM_INFO_STR-DATUB sy-vline 
WA_COM_INFO_STR-AENNR_AUS sy-vline 
WA_COM_INFO_STR-MATNR sy-vline 
WA_COM_INFO_STR-WERKS sy-vline 
WA_COM_INFO_STR-MAKTX sy-vline 
WA_COM_INFO_STR-POSNR sy-vline 
WA_COM_INFO_STR-MENGE sy-vline 
WA_COM_INFO_STR-MEINS sy-vline 
WA_COM_INFO_STR-IUPOS sy-vline 
WA_COM_INFO_STR-IEBOR sy-vline 
WA_COM_INFO_STR-BOMAT sy-vline 
WA_COM_INFO_STR-DBSKZ sy-vline 
WA_COM_INFO_STR-IDNRK sy-vline      INTO ld_text SEPARATED BY SPACE.

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