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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /CUM/CU_ORDER_GEN
*  INTO TABLE @DATA(IT_/CUM/CU_ORDER_GEN2).
*--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/CU_ORDER_GEN INDEX 1 INTO DATA(WA_/CUM/CU_ORDER_GEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</CUM/CU_ORDER_GEN>-LINE_ID = 1.
</CUM/CU_ORDER_GEN>-OBJNR = 1.
</CUM/CU_ORDER_GEN>-TEXTDP = 1.
</CUM/CU_ORDER_GEN>-CU_ID = 1.
</CUM/CU_ORDER_GEN>-CU_ID_TOP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/CUM/CU_ORDER_GEN-CU_BOM, sy-vline,
  WA_/CUM/CU_ORDER_GEN-GRPIND, sy-vline,
  WA_/CUM/CU_ORDER_GEN-LININD, sy-vline,
  WA_/CUM/CU_ORDER_GEN-PLNTY, sy-vline,
  WA_/CUM/CU_ORDER_GEN-PLNNR, sy-vline,
  WA_/CUM/CU_ORDER_GEN-PLNKN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/CUM/CU_ORDER_GEN 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/CU_ORDER_GEN 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/CU_ORDER_GEN INTO WA_/CUM/CU_ORDER_GEN.


*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 CU_ID
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/CUM/CU_ORDER_GEN-CU_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CUM/CU_ORDER_GEN-CU_ID.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit OBART, internal->external for field KONTY
CALL FUNCTION 'CONVERSION_EXIT_OBART_OUTPUT'
  EXPORTING
    input =                      WA_/CUM/CU_ORDER_GEN-KONTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CUM/CU_ORDER_GEN-KONTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FERC_IND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/CUM/CU_ORDER_GEN-FERC_IND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CUM/CU_ORDER_GEN-FERC_IND.
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/CU_ORDER_GEN_STR, 
LINE_ID TYPE STRING,
OBJNR TYPE STRING,
TEXTDP TYPE STRING,
CU_ID TYPE STRING,
CU_ID_TOP TYPE STRING,
CU_BOM TYPE STRING,
GRPIND TYPE STRING,
LININD TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNKN TYPE STRING,
PLNAL TYPE STRING,
ZAEHL TYPE STRING,
VORNR TYPE STRING,
BZGSOBJTYP TYPE STRING,
BZGSOBJ TYPE STRING,
FAKTOR TYPE STRING,
COMPLF TYPE STRING,
KONTY TYPE STRING,
EMPGE TYPE STRING,
FERC_IND TYPE STRING,
CU_FUNCT TYPE STRING,
CU_CLASS TYPE STRING,
CU_ACTION TYPE STRING,
CU_SERVICE TYPE STRING,
CU_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/CUM/CU_ORDER_GEN_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/CU_ORDER_GEN_STR-LINE_ID sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-OBJNR sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-TEXTDP sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-CU_ID sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-CU_ID_TOP sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-CU_BOM sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-GRPIND sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-LININD sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-PLNTY sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-PLNNR sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-PLNKN sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-PLNAL sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-ZAEHL sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-VORNR sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-BZGSOBJTYP sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-BZGSOBJ sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-FAKTOR sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-COMPLF sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-KONTY sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-EMPGE sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-FERC_IND sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-CU_FUNCT sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-CU_CLASS sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-CU_ACTION sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-CU_SERVICE sy-vline 
WA_/CUM/CU_ORDER_GEN_STR-CU_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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