ABAP Select data from SAP table CRMT_CMG_NOTE_EXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMT_CMG_NOTE_EXT
*  INTO TABLE @DATA(IT_CRMT_CMG_NOTE_EXT2).
*--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_CRMT_CMG_NOTE_EXT INDEX 1 INTO DATA(WA_CRMT_CMG_NOTE_EXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMT_CMG_NOTE_EXT>-TDNAME = 1.
<CRMT_CMG_NOTE_EXT>-NOTE_EXT_KEY = 1.
<CRMT_CMG_NOTE_EXT>-LANGU = 1.
<CRMT_CMG_NOTE_EXT>-TDOBJECT = 1.
<CRMT_CMG_NOTE_EXT>-TDID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMT_CMG_NOTE_EXT-TDTITLE, sy-vline,
  WA_CRMT_CMG_NOTE_EXT-TDFDATE, sy-vline,
  WA_CRMT_CMG_NOTE_EXT-TDFTIME, sy-vline,
  WA_CRMT_CMG_NOTE_EXT-TDFUSER, sy-vline,
  WA_CRMT_CMG_NOTE_EXT-TDLUSER, sy-vline,
  WA_CRMT_CMG_NOTE_EXT-TDLDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMT_CMG_NOTE_EXT 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_CRMT_CMG_NOTE_EXT 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_CRMT_CMG_NOTE_EXT INTO WA_CRMT_CMG_NOTE_EXT.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_CMG_NOTE_EXT-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_CMG_NOTE_EXT-LANGU.
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_CRMT_CMG_NOTE_EXT_STR, 
TDNAME TYPE STRING,
NOTE_EXT_KEY TYPE STRING,
LANGU TYPE STRING,
TDOBJECT TYPE STRING,
TDID TYPE STRING,
TDTITLE TYPE STRING,
TDFDATE TYPE STRING,
TDFTIME TYPE STRING,
TDFUSER TYPE STRING,
TDLUSER TYPE STRING,
TDLDATE TYPE STRING,
TDLTIME TYPE STRING,
LANGU_TEXT TYPE STRING,
LANGU_TEXT_LONG TYPE STRING,
TDTEXT TYPE STRING,
TEXT TYPE STRING,
DUMMY TYPE STRING,
NOTE_EEW_DUMMY TYPE STRING,
CMG_N_EEW_DUMMY TYPE STRING,
NOTE_NOT_SAVED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMT_CMG_NOTE_EXT_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_CRMT_CMG_NOTE_EXT_STR-TDNAME sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-NOTE_EXT_KEY sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-LANGU sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-TDOBJECT sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-TDID sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-TDTITLE sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-TDFDATE sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-TDFTIME sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-TDFUSER sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-TDLUSER sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-TDLDATE sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-TDLTIME sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-LANGU_TEXT sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-LANGU_TEXT_LONG sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-TDTEXT sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-TEXT sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-DUMMY sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-NOTE_EEW_DUMMY sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-CMG_N_EEW_DUMMY sy-vline 
WA_CRMT_CMG_NOTE_EXT_STR-NOTE_NOT_SAVED sy-vline      INTO ld_text SEPARATED BY SPACE.

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