ABAP Select data from SAP table CMCB_V_NOTE_CTL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMCB_V_NOTE_CTL
*  INTO TABLE @DATA(IT_CMCB_V_NOTE_CTL2).
*--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_CMCB_V_NOTE_CTL INDEX 1 INTO DATA(WA_CMCB_V_NOTE_CTL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMCB_V_NOTE_CTL>-MANDT = 1.
<CMCB_V_NOTE_CTL>-CB_AREA = 1.
<CMCB_V_NOTE_CTL>-CYCLE_TYPE = 1.
<CMCB_V_NOTE_CTL>-NOTIFY_FLAG = 1.
<CMCB_V_NOTE_CTL>-ALERT_FLAG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMCB_V_NOTE_CTL-NOTE_CB_APPROVE, sy-vline,
  WA_CMCB_V_NOTE_CTL-NOTE_CB_COMPLETE, sy-vline,
  WA_CMCB_V_NOTE_CTL-ALERT_DEADLINE, sy-vline,
  WA_CMCB_V_NOTE_CTL-ALERT_DAY, sy-vline,
  WA_CMCB_V_NOTE_CTL-ALERT_CON, sy-vline,
  WA_CMCB_V_NOTE_CTL-ALT_TOL_AMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMCB_V_NOTE_CTL 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_CMCB_V_NOTE_CTL 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_CMCB_V_NOTE_CTL INTO WA_CMCB_V_NOTE_CTL.


*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 AU172, internal->external for field ALT_TOL_AMT
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_CMCB_V_NOTE_CTL-ALT_TOL_AMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMCB_V_NOTE_CTL-ALT_TOL_AMT.
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_CMCB_V_NOTE_CTL_STR, 
MANDT TYPE STRING,
CB_AREA TYPE STRING,
CYCLE_TYPE TYPE STRING,
NOTIFY_FLAG TYPE STRING,
ALERT_FLAG TYPE STRING,
NOTE_CB_APPROVE TYPE STRING,
NOTE_CB_COMPLETE TYPE STRING,
ALERT_DEADLINE TYPE STRING,
ALERT_DAY TYPE STRING,
ALERT_CON TYPE STRING,
ALT_TOL_AMT TYPE STRING,
ALERT_TOL_PER TYPE STRING,
CB_AREA_DESC TYPE STRING,
CYCLE_TYPE_DESC TYPE STRING,
ALT_TOL_CURR TYPE STRING,
NOTE_BLOCK TYPE STRING,
PS_CTGY_APP TYPE STRING,
PS_CTGY_COMP TYPE STRING,
PS_CTGY_BLOCK TYPE STRING,
PS_CTGY_ALERT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMCB_V_NOTE_CTL_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_CMCB_V_NOTE_CTL_STR-MANDT sy-vline 
WA_CMCB_V_NOTE_CTL_STR-CB_AREA sy-vline 
WA_CMCB_V_NOTE_CTL_STR-CYCLE_TYPE sy-vline 
WA_CMCB_V_NOTE_CTL_STR-NOTIFY_FLAG sy-vline 
WA_CMCB_V_NOTE_CTL_STR-ALERT_FLAG sy-vline 
WA_CMCB_V_NOTE_CTL_STR-NOTE_CB_APPROVE sy-vline 
WA_CMCB_V_NOTE_CTL_STR-NOTE_CB_COMPLETE sy-vline 
WA_CMCB_V_NOTE_CTL_STR-ALERT_DEADLINE sy-vline 
WA_CMCB_V_NOTE_CTL_STR-ALERT_DAY sy-vline 
WA_CMCB_V_NOTE_CTL_STR-ALERT_CON sy-vline 
WA_CMCB_V_NOTE_CTL_STR-ALT_TOL_AMT sy-vline 
WA_CMCB_V_NOTE_CTL_STR-ALERT_TOL_PER sy-vline 
WA_CMCB_V_NOTE_CTL_STR-CB_AREA_DESC sy-vline 
WA_CMCB_V_NOTE_CTL_STR-CYCLE_TYPE_DESC sy-vline 
WA_CMCB_V_NOTE_CTL_STR-ALT_TOL_CURR sy-vline 
WA_CMCB_V_NOTE_CTL_STR-NOTE_BLOCK sy-vline 
WA_CMCB_V_NOTE_CTL_STR-PS_CTGY_APP sy-vline 
WA_CMCB_V_NOTE_CTL_STR-PS_CTGY_COMP sy-vline 
WA_CMCB_V_NOTE_CTL_STR-PS_CTGY_BLOCK sy-vline 
WA_CMCB_V_NOTE_CTL_STR-PS_CTGY_ALERT sy-vline      INTO ld_text SEPARATED BY SPACE.

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