ABAP Select data from SAP table CMDCHNGPRCSTDKPI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMDCHNGPRCSTDKPI
*  INTO TABLE @DATA(IT_CMDCHNGPRCSTDKPI2).
*--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_CMDCHNGPRCSTDKPI INDEX 1 INTO DATA(WA_CMDCHNGPRCSTDKPI2).


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

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

ENDLOOP.

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

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


*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_CMDCHNGPRCSTDKPI_STR, 
MANDT TYPE STRING,
MDCHGPROCESSSTEPUUID 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,
MDNROFDEFECTIVERECORDS TYPE STRING,
MDNROFMODIFIEDRECORDS TYPE STRING,
MDNROFACCURATERECORDS TYPE STRING,
MDNROFAMBIGUOUSRECORDS TYPE STRING,
MDNROFMANUALLYAPPROVEDRECORDS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMDCHNGPRCSTDKPI_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_CMDCHNGPRCSTDKPI_STR-MANDT sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MDCHGPROCESSSTEPUUID sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MASTERDATACHANGEPROCESS sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MDCHGPROCESSSTEP sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MDCHGPROCESSTYPEID sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MDCHGPROCESSGOAL sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MDCHGPROCESSSRCEOBJECTTYPECODE sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MDCHGPROCESSSTEPADAPTER sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MDCHGPROCESSSTEPTYPE sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MDCHGPROCESSSTEPSTARTDATETIME sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MDCHGPROCESSSTEPFINISHDATETIME sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MDNROFDEFECTIVERECORDS sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MDNROFMODIFIEDRECORDS sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MDNROFACCURATERECORDS sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MDNROFAMBIGUOUSRECORDS sy-vline 
WA_CMDCHNGPRCSTDKPI_STR-MDNROFMANUALLYAPPROVEDRECORDS sy-vline      INTO ld_text SEPARATED BY SPACE.

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