ABAP Select data from SAP table CMDCHNGPRCDEEKPI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMDCHNGPRCDEEKPI
*  INTO TABLE @DATA(IT_CMDCHNGPRCDEEKPI2).
*--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_CMDCHNGPRCDEEKPI INDEX 1 INTO DATA(WA_CMDCHNGPRCDEEKPI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMDCHNGPRCDEEKPI>-MANDT = 1.
<CMDCHNGPRCDEEKPI>-MDCHGPROCESSSTEPUUID = 1.
<CMDCHNGPRCDEEKPI>-MDCHANGEPROCESSSTEPTABLE = 1.
<CMDCHNGPRCDEEKPI>-MASTERDATACHANGEPROCESS = 1.
<CMDCHNGPRCDEEKPI>-MDCHGPROCESSSTEP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMDCHNGPRCDEEKPI-MDCHGPROCESSTYPEID, sy-vline,
  WA_CMDCHNGPRCDEEKPI-MDCHGPROCESSGOAL, sy-vline,
  WA_CMDCHNGPRCDEEKPI-MDCHGPROCESSSRCEOBJECTTYPECODE, sy-vline,
  WA_CMDCHNGPRCDEEKPI-MDCHGPROCESSSTEPADAPTER, sy-vline,
  WA_CMDCHNGPRCDEEKPI-MDCHGPROCESSSTEPTYPE, sy-vline,
  WA_CMDCHNGPRCDEEKPI-MDCHGPROCESSSTEPSTARTDATETIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMDCHNGPRCDEEKPI 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_CMDCHNGPRCDEEKPI 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_CMDCHNGPRCDEEKPI INTO WA_CMDCHNGPRCDEEKPI.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CMDCHNGPRCDEEKPI_STR, 
MANDT TYPE STRING,
MDCHGPROCESSSTEPUUID TYPE STRING,
MDCHANGEPROCESSSTEPTABLE TYPE STRING,
MASTERDATACHANGEPROCESS TYPE STRING,
MDCHGPROCESSSTEP TYPE STRING,
MDCHGPROCESSTYPEID TYPE STRING,
MDCHGPROCESSGOAL TYPE STRING,
MDCHGPROCESSSRCEOBJECTTYPECODE TYPE STRING,
MDCHGPROCESSSTEPADAPTER TYPE STRING,
MDCHGPROCESSSTEPTYPE TYPE STRING,
MDCHGPROCESSSTEPSTARTDATETIME TYPE STRING,
MDCHGPROCESSSTEPFINISHDATETIME TYPE STRING,
MDCHGPROCSTPNMBROFTOTALRECORDS TYPE STRING,
MDCHGPROCSTPNROFMODIFDRECORDS TYPE STRING,
MDCHGPROCSTPNROFNOTCHGDRECORDS TYPE STRING,
MDCHGPROCSTPNROFINSERTRECORDS TYPE STRING,
MDCHGPROCSTPNROFDELETEDRECORDS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMDCHNGPRCDEEKPI_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_CMDCHNGPRCDEEKPI_STR-MANDT sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHGPROCESSSTEPUUID sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHANGEPROCESSSTEPTABLE sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MASTERDATACHANGEPROCESS sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHGPROCESSSTEP sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHGPROCESSTYPEID sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHGPROCESSGOAL sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHGPROCESSSRCEOBJECTTYPECODE sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHGPROCESSSTEPADAPTER sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHGPROCESSSTEPTYPE sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHGPROCESSSTEPSTARTDATETIME sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHGPROCESSSTEPFINISHDATETIME sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHGPROCSTPNMBROFTOTALRECORDS sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHGPROCSTPNROFMODIFDRECORDS sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHGPROCSTPNROFNOTCHGDRECORDS sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHGPROCSTPNROFINSERTRECORDS sy-vline 
WA_CMDCHNGPRCDEEKPI_STR-MDCHGPROCSTPNROFDELETEDRECORDS sy-vline      INTO ld_text SEPARATED BY SPACE.

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