ABAP Select data from SAP table CD9NTTYP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CD9NTTYP 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 CD9NTTYP. 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 CD9NTTYP 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_CD9NTTYP TYPE STANDARD TABLE OF CD9NTTYP,
      WA_CD9NTTYP TYPE CD9NTTYP,
      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: <CD9NTTYP> TYPE CD9NTTYP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CD9NTTYP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CD9NTTYP
  INTO TABLE IT_CD9NTTYP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CD9NTTYP
*  INTO TABLE @DATA(IT_CD9NTTYP2).
*--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_CD9NTTYP INDEX 1 INTO DATA(WA_CD9NTTYP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CD9NTTYP ASSIGNING <CD9NTTYP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CD9NTTYP>-KCHAR = 1.
<CD9NTTYP>-KACCP = 1.
<CD9NTTYP>-KCLNT = 1.
<CD9NTTYP>-KCUKY = 1.
<CD9NTTYP>-KCURR = 1.

ENDLOOP.

LOOP AT IT_CD9NTTYP INTO WA_CD9NTTYP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CD9NTTYP-KDATS, sy-vline,
  WA_CD9NTTYP-KDEC, sy-vline,
  WA_CD9NTTYP-KFLTP, sy-vline,
  WA_CD9NTTYP-KINT1, sy-vline,
  WA_CD9NTTYP-KINT2, sy-vline,
  WA_CD9NTTYP-KINT4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CD9NTTYP 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_CD9NTTYP 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_CD9NTTYP INTO WA_CD9NTTYP.


*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 KCHAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CD9NTTYP-KCHAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CD9NTTYP-KCHAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field KLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CD9NTTYP-KLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CD9NTTYP-KLANG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KCHARFEST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CD9NTTYP-KCHARFEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CD9NTTYP-KCHARFEST.
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_CD9NTTYP_STR, 
KCHAR TYPE STRING,
KACCP TYPE STRING,
KCLNT TYPE STRING,
KCUKY TYPE STRING,
KCURR TYPE STRING,
KDATS TYPE STRING,
KDEC TYPE STRING,
KFLTP TYPE STRING,
KINT1 TYPE STRING,
KINT2 TYPE STRING,
KINT4 TYPE STRING,
KLANG TYPE STRING,
KNUMC TYPE STRING,
KPREC TYPE STRING,
KQUAN TYPE STRING,
KRAW TYPE STRING,
KTIMS TYPE STRING,
KUNIT TYPE STRING,
KINTFEST TYPE STRING,
KCHARFEST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CD9NTTYP_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_CD9NTTYP_STR-KCHAR sy-vline 
WA_CD9NTTYP_STR-KACCP sy-vline 
WA_CD9NTTYP_STR-KCLNT sy-vline 
WA_CD9NTTYP_STR-KCUKY sy-vline 
WA_CD9NTTYP_STR-KCURR sy-vline 
WA_CD9NTTYP_STR-KDATS sy-vline 
WA_CD9NTTYP_STR-KDEC sy-vline 
WA_CD9NTTYP_STR-KFLTP sy-vline 
WA_CD9NTTYP_STR-KINT1 sy-vline 
WA_CD9NTTYP_STR-KINT2 sy-vline 
WA_CD9NTTYP_STR-KINT4 sy-vline 
WA_CD9NTTYP_STR-KLANG sy-vline 
WA_CD9NTTYP_STR-KNUMC sy-vline 
WA_CD9NTTYP_STR-KPREC sy-vline 
WA_CD9NTTYP_STR-KQUAN sy-vline 
WA_CD9NTTYP_STR-KRAW sy-vline 
WA_CD9NTTYP_STR-KTIMS sy-vline 
WA_CD9NTTYP_STR-KUNIT sy-vline 
WA_CD9NTTYP_STR-KINTFEST sy-vline 
WA_CD9NTTYP_STR-KCHARFEST sy-vline      INTO ld_text SEPARATED BY SPACE.

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