ABAP Select data from SAP table CMCOMINF into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CMCOMINF 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 CMCOMINF. 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 CMCOMINF 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_CMCOMINF TYPE STANDARD TABLE OF CMCOMINF,
      WA_CMCOMINF TYPE CMCOMINF,
      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: <CMCOMINF> TYPE CMCOMINF.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMCOMINF
*  INTO TABLE @DATA(IT_CMCOMINF2).
*--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_CMCOMINF INDEX 1 INTO DATA(WA_CMCOMINF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMCOMINF>-BOMAT = 1.
<CMCOMINF>-MAKTX = 1.
<CMCOMINF>-VBELN = 1.
<CMCOMINF>-VBPOS = 1.
<CMCOMINF>-PSPNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMCOMINF-WRKAN, sy-vline,
  WA_CMCOMINF-DUMPS, sy-vline,
  WA_CMCOMINF-POSTP, sy-vline,
  WA_CMCOMINF-POSNR, sy-vline,
  WA_CMCOMINF-IDENT_ITM, sy-vline,
  WA_CMCOMINF-IDNRK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMCOMINF 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_CMCOMINF 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_CMCOMINF INTO WA_CMCOMINF.


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

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

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CMCOMINF-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMCOMINF-PSPNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field VPLAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMCOMINF-VPLAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMCOMINF-VPLAL.
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_CMCOMINF_STR, 
BOMAT TYPE STRING,
MAKTX TYPE STRING,
VBELN TYPE STRING,
VBPOS TYPE STRING,
PSPNR TYPE STRING,
WRKAN TYPE STRING,
DUMPS TYPE STRING,
POSTP TYPE STRING,
POSNR TYPE STRING,
IDENT_ITM TYPE STRING,
IDNRK TYPE STRING,
BOMOB TYPE STRING,
FMENG TYPE STRING,
SCHGT TYPE STRING,
KZKUP TYPE STRING,
KZWPF TYPE STRING,
KZCLB TYPE STRING,
KANTE_V TYPE STRING,
VORNR TYPE STRING,
ROANZ TYPE STRING,
ROMS1 TYPE STRING,
ROMS2 TYPE STRING,
ROMS3 TYPE STRING,
ROMEI TYPE STRING,
ROMEN TYPE STRING,
MEINS TYPE STRING,
RFORM TYPE STRING,
DATUB TYPE STRING,
AENNR_AUS TYPE STRING,
NLFZV TYPE STRING,
STPOZ TYPE STRING,
VPLTY TYPE STRING,
VPLNR TYPE STRING,
VPLAL TYPE STRING,
IDENT TYPE STRING,
IDENT_REF TYPE STRING,
HERKUNFT TYPE STRING,
STVKN_VERSN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMCOMINF_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_CMCOMINF_STR-BOMAT sy-vline 
WA_CMCOMINF_STR-MAKTX sy-vline 
WA_CMCOMINF_STR-VBELN sy-vline 
WA_CMCOMINF_STR-VBPOS sy-vline 
WA_CMCOMINF_STR-PSPNR sy-vline 
WA_CMCOMINF_STR-WRKAN sy-vline 
WA_CMCOMINF_STR-DUMPS sy-vline 
WA_CMCOMINF_STR-POSTP sy-vline 
WA_CMCOMINF_STR-POSNR sy-vline 
WA_CMCOMINF_STR-IDENT_ITM sy-vline 
WA_CMCOMINF_STR-IDNRK sy-vline 
WA_CMCOMINF_STR-BOMOB sy-vline 
WA_CMCOMINF_STR-FMENG sy-vline 
WA_CMCOMINF_STR-SCHGT sy-vline 
WA_CMCOMINF_STR-KZKUP sy-vline 
WA_CMCOMINF_STR-KZWPF sy-vline 
WA_CMCOMINF_STR-KZCLB sy-vline 
WA_CMCOMINF_STR-KANTE_V sy-vline 
WA_CMCOMINF_STR-VORNR sy-vline 
WA_CMCOMINF_STR-ROANZ sy-vline 
WA_CMCOMINF_STR-ROMS1 sy-vline 
WA_CMCOMINF_STR-ROMS2 sy-vline 
WA_CMCOMINF_STR-ROMS3 sy-vline 
WA_CMCOMINF_STR-ROMEI sy-vline 
WA_CMCOMINF_STR-ROMEN sy-vline 
WA_CMCOMINF_STR-MEINS sy-vline 
WA_CMCOMINF_STR-RFORM sy-vline 
WA_CMCOMINF_STR-DATUB sy-vline 
WA_CMCOMINF_STR-AENNR_AUS sy-vline 
WA_CMCOMINF_STR-NLFZV sy-vline 
WA_CMCOMINF_STR-STPOZ sy-vline 
WA_CMCOMINF_STR-VPLTY sy-vline 
WA_CMCOMINF_STR-VPLNR sy-vline 
WA_CMCOMINF_STR-VPLAL sy-vline 
WA_CMCOMINF_STR-IDENT sy-vline 
WA_CMCOMINF_STR-IDENT_REF sy-vline 
WA_CMCOMINF_STR-HERKUNFT sy-vline 
WA_CMCOMINF_STR-STVKN_VERSN sy-vline      INTO ld_text SEPARATED BY SPACE.

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