ABAP Select data from SAP table CNMMQUANS_EKES into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CNMMQUANS_EKES 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_EKES. 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_EKES 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_EKES TYPE STANDARD TABLE OF CNMMQUANS_EKES,
      WA_CNMMQUANS_EKES TYPE CNMMQUANS_EKES,
      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_EKES> TYPE CNMMQUANS_EKES.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNMMQUANS_EKES
*  INTO TABLE @DATA(IT_CNMMQUANS_EKES2).
*--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_EKES INDEX 1 INTO DATA(WA_CNMMQUANS_EKES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNMMQUANS_EKES>-RSNUM = 1.
<CNMMQUANS_EKES>-RSPOS = 1.
<CNMMQUANS_EKES>-RSART = 1.
<CNMMQUANS_EKES>-ICONS = 1.
<CNMMQUANS_EKES>-BDMNG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNMMQUANS_EKES-MEINS, sy-vline,
  WA_CNMMQUANS_EKES-EBELN, sy-vline,
  WA_CNMMQUANS_EKES-EBELP, sy-vline,
  WA_CNMMQUANS_EKES-XEKET, sy-vline,
  WA_CNMMQUANS_EKES-XEKES, sy-vline,
  WA_CNMMQUANS_EKES-XEKBE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNMMQUANS_EKES 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_EKES 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_EKES INTO WA_CNMMQUANS_EKES.


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

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

*Conversion exit CUNIT, internal->external for field MEINS_EKES
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CNMMQUANS_EKES-MEINS_EKES
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNMMQUANS_EKES-MEINS_EKES.
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_EKES_STR, 
RSNUM TYPE STRING,
RSPOS TYPE STRING,
RSART TYPE STRING,
ICONS TYPE STRING,
BDMNG TYPE STRING,
MEINS TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
XEKET TYPE STRING,
XEKES TYPE STRING,
XEKBE TYPE STRING,
MENGE TYPE STRING,
MEINS_EKES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNMMQUANS_EKES_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_EKES_STR-RSNUM sy-vline 
WA_CNMMQUANS_EKES_STR-RSPOS sy-vline 
WA_CNMMQUANS_EKES_STR-RSART sy-vline 
WA_CNMMQUANS_EKES_STR-ICONS sy-vline 
WA_CNMMQUANS_EKES_STR-BDMNG sy-vline 
WA_CNMMQUANS_EKES_STR-MEINS sy-vline 
WA_CNMMQUANS_EKES_STR-EBELN sy-vline 
WA_CNMMQUANS_EKES_STR-EBELP sy-vline 
WA_CNMMQUANS_EKES_STR-XEKET sy-vline 
WA_CNMMQUANS_EKES_STR-XEKES sy-vline 
WA_CNMMQUANS_EKES_STR-XEKBE sy-vline 
WA_CNMMQUANS_EKES_STR-MENGE sy-vline 
WA_CNMMQUANS_EKES_STR-MEINS_EKES sy-vline      INTO ld_text SEPARATED BY SPACE.

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