ABAP Select data from SAP table /CUM/CONMS_IO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /CUM/CONMS_IO 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 /CUM/CONMS_IO. 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 /CUM/CONMS_IO 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_/CUM/CONMS_IO TYPE STANDARD TABLE OF /CUM/CONMS_IO,
      WA_/CUM/CONMS_IO TYPE /CUM/CONMS_IO,
      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: </CUM/CONMS_IO> TYPE /CUM/CONMS_IO.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /CUM/CONMS_IO
  INTO TABLE IT_/CUM/CONMS_IO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /CUM/CONMS_IO
*  INTO TABLE @DATA(IT_/CUM/CONMS_IO2).
*--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_/CUM/CONMS_IO INDEX 1 INTO DATA(WA_/CUM/CONMS_IO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/CUM/CONMS_IO ASSIGNING </CUM/CONMS_IO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</CUM/CONMS_IO>-CMNUM = 1.
</CUM/CONMS_IO>-CMTYP = 1.
</CUM/CONMS_IO>-OBJNR = 1.
</CUM/CONMS_IO>-BEGRU = 1.
</CUM/CONMS_IO>-EQFNR = 1.

ENDLOOP.

LOOP AT IT_/CUM/CONMS_IO INTO WA_/CUM/CONMS_IO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/CUM/CONMS_IO-IWERK, sy-vline,
  WA_/CUM/CONMS_IO-POSID, sy-vline,
  WA_/CUM/CONMS_IO-AUFNR_MASTER, sy-vline,
  WA_/CUM/CONMS_IO-QMNUM, sy-vline,
  WA_/CUM/CONMS_IO-PARVW_VERA, sy-vline,
  WA_/CUM/CONMS_IO-PARNR_VERA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/CUM/CONMS_IO 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_/CUM/CONMS_IO 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_/CUM/CONMS_IO INTO WA_/CUM/CONMS_IO.


*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 CMNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/CUM/CONMS_IO-CMNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CUM/CONMS_IO-CMNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_/CUM/CONMS_IO-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CUM/CONMS_IO-POSID.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit PARVW, internal->external for field PARVW_VERA
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_/CUM/CONMS_IO-PARVW_VERA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CUM/CONMS_IO-PARVW_VERA.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field CMNUM_REF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/CUM/CONMS_IO-CMNUM_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CUM/CONMS_IO-CMNUM_REF.
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_/CUM/CONMS_IO_STR, 
CMNUM TYPE STRING,
CMTYP TYPE STRING,
OBJNR TYPE STRING,
BEGRU TYPE STRING,
EQFNR TYPE STRING,
IWERK TYPE STRING,
POSID TYPE STRING,
AUFNR_MASTER TYPE STRING,
QMNUM TYPE STRING,
PARVW_VERA TYPE STRING,
PARNR_VERA TYPE STRING,
NAME_VERA TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
STTXS TYPE STRING,
STTXU TYPE STRING,
CMTXT TYPE STRING,
CMTTX TYPE STRING,
BEGTX TYPE STRING,
IWKTX TYPE STRING,
POST1 TYPE STRING,
AUFTX_MASTER TYPE STRING,
QMTXT TYPE STRING,
CMNUM_REF TYPE STRING,
CMTXT_REF TYPE STRING,
COPY_DOCLINKS TYPE STRING,
RELIND TYPE STRING,
PARGR TYPE STRING,
VBKZ TYPE STRING,
CMDAB TYPE STRING,
CMZAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/CUM/CONMS_IO_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_/CUM/CONMS_IO_STR-CMNUM sy-vline 
WA_/CUM/CONMS_IO_STR-CMTYP sy-vline 
WA_/CUM/CONMS_IO_STR-OBJNR sy-vline 
WA_/CUM/CONMS_IO_STR-BEGRU sy-vline 
WA_/CUM/CONMS_IO_STR-EQFNR sy-vline 
WA_/CUM/CONMS_IO_STR-IWERK sy-vline 
WA_/CUM/CONMS_IO_STR-POSID sy-vline 
WA_/CUM/CONMS_IO_STR-AUFNR_MASTER sy-vline 
WA_/CUM/CONMS_IO_STR-QMNUM sy-vline 
WA_/CUM/CONMS_IO_STR-PARVW_VERA sy-vline 
WA_/CUM/CONMS_IO_STR-PARNR_VERA sy-vline 
WA_/CUM/CONMS_IO_STR-NAME_VERA sy-vline 
WA_/CUM/CONMS_IO_STR-ERDAT sy-vline 
WA_/CUM/CONMS_IO_STR-ERNAM sy-vline 
WA_/CUM/CONMS_IO_STR-AEDAT sy-vline 
WA_/CUM/CONMS_IO_STR-AENAM sy-vline 
WA_/CUM/CONMS_IO_STR-STTXS sy-vline 
WA_/CUM/CONMS_IO_STR-STTXU sy-vline 
WA_/CUM/CONMS_IO_STR-CMTXT sy-vline 
WA_/CUM/CONMS_IO_STR-CMTTX sy-vline 
WA_/CUM/CONMS_IO_STR-BEGTX sy-vline 
WA_/CUM/CONMS_IO_STR-IWKTX sy-vline 
WA_/CUM/CONMS_IO_STR-POST1 sy-vline 
WA_/CUM/CONMS_IO_STR-AUFTX_MASTER sy-vline 
WA_/CUM/CONMS_IO_STR-QMTXT sy-vline 
WA_/CUM/CONMS_IO_STR-CMNUM_REF sy-vline 
WA_/CUM/CONMS_IO_STR-CMTXT_REF sy-vline 
WA_/CUM/CONMS_IO_STR-COPY_DOCLINKS sy-vline 
WA_/CUM/CONMS_IO_STR-RELIND sy-vline 
WA_/CUM/CONMS_IO_STR-PARGR sy-vline 
WA_/CUM/CONMS_IO_STR-VBKZ sy-vline 
WA_/CUM/CONMS_IO_STR-CMDAB sy-vline 
WA_/CUM/CONMS_IO_STR-CMZAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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