ABAP Select data from SAP table CNMMQUANS_EKET_NW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNMMQUANS_EKET_NW
*  INTO TABLE @DATA(IT_CNMMQUANS_EKET_NW2).
*--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_CNMMQUANS_EKET_NW INDEX 1 INTO DATA(WA_CNMMQUANS_EKET_NW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNMMQUANS_EKET_NW>-NPLNR = 1.
<CNMMQUANS_EKET_NW>-VORNR = 1.
<CNMMQUANS_EKET_NW>-ICONS = 1.
<CNMMQUANS_EKET_NW>-MENGE = 1.
<CNMMQUANS_EKET_NW>-MEINS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNMMQUANS_EKET_NW-RFQ_EBELN, sy-vline,
  WA_CNMMQUANS_EKET_NW-RFQ_EBELP, sy-vline,
  WA_CNMMQUANS_EKET_NW-STATU, sy-vline,
  WA_CNMMQUANS_EKET_NW-EBELN, sy-vline,
  WA_CNMMQUANS_EKET_NW-EBELP, sy-vline,
  WA_CNMMQUANS_EKET_NW-XEKET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNMMQUANS_EKET_NW 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_CNMMQUANS_EKET_NW 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_CNMMQUANS_EKET_NW INTO WA_CNMMQUANS_EKET_NW.


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

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

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

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

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

*Conversion exit CUNIT, internal->external for field MEINS_EKET
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CNMMQUANS_EKET_NW-MEINS_EKET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNMMQUANS_EKET_NW-MEINS_EKET.
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_CNMMQUANS_EKET_NW_STR, 
NPLNR TYPE STRING,
VORNR TYPE STRING,
ICONS TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
RFQ_EBELN TYPE STRING,
RFQ_EBELP TYPE STRING,
STATU TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
XEKET TYPE STRING,
XEKES TYPE STRING,
XEKBE TYPE STRING,
MENGE_EKET TYPE STRING,
WEMNG TYPE STRING,
WAMNG TYPE STRING,
MNG02 TYPE STRING,
MEINS_EKET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNMMQUANS_EKET_NW_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_CNMMQUANS_EKET_NW_STR-NPLNR sy-vline 
WA_CNMMQUANS_EKET_NW_STR-VORNR sy-vline 
WA_CNMMQUANS_EKET_NW_STR-ICONS sy-vline 
WA_CNMMQUANS_EKET_NW_STR-MENGE sy-vline 
WA_CNMMQUANS_EKET_NW_STR-MEINS sy-vline 
WA_CNMMQUANS_EKET_NW_STR-RFQ_EBELN sy-vline 
WA_CNMMQUANS_EKET_NW_STR-RFQ_EBELP sy-vline 
WA_CNMMQUANS_EKET_NW_STR-STATU sy-vline 
WA_CNMMQUANS_EKET_NW_STR-EBELN sy-vline 
WA_CNMMQUANS_EKET_NW_STR-EBELP sy-vline 
WA_CNMMQUANS_EKET_NW_STR-XEKET sy-vline 
WA_CNMMQUANS_EKET_NW_STR-XEKES sy-vline 
WA_CNMMQUANS_EKET_NW_STR-XEKBE sy-vline 
WA_CNMMQUANS_EKET_NW_STR-MENGE_EKET sy-vline 
WA_CNMMQUANS_EKET_NW_STR-WEMNG sy-vline 
WA_CNMMQUANS_EKET_NW_STR-WAMNG sy-vline 
WA_CNMMQUANS_EKET_NW_STR-MNG02 sy-vline 
WA_CNMMQUANS_EKET_NW_STR-MEINS_EKET sy-vline      INTO ld_text SEPARATED BY SPACE.

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