ABAP Select data from SAP table CMDCHNGPRCMTCKPI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMDCHNGPRCMTCKPI
*  INTO TABLE @DATA(IT_CMDCHNGPRCMTCKPI2).
*--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_CMDCHNGPRCMTCKPI INDEX 1 INTO DATA(WA_CMDCHNGPRCMTCKPI2).


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

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

ENDLOOP.

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

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


*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_CMDCHNGPRCMTCKPI_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,
MDNROFMTCHGGROUPS TYPE STRING,
MDNROFACTIVEMTCHGGROUPS TYPE STRING,
MDNROFSOURCEMTCHGGROUPS TYPE STRING,
MDNROFAPPROVEDMTCHGGROUPS TYPE STRING,
MDNROFOPENMTCHGGROUPS TYPE STRING,
MDNROFREJECTEDMTCHGGROUPS TYPE STRING,
MDNROFDISCARDEDRECORDS TYPE STRING,
MDNROFACTVOPENMTCHGGROUPS TYPE STRING,
MDNROFACTVAPPROVEDMTCHGGROUPS TYPE STRING,
MDNROFACTVREJECTEDMTCHGGROUPS TYPE STRING,
MDNROFACTVOPENRECORDS TYPE STRING,
MDNROFACTVAPPROVEDRECORDS TYPE STRING,
MDNROFACTVREJECTEDRECORDS TYPE STRING,
MDNROFSRCEOPENMTCHGGROUPS TYPE STRING,
MDNROFSRCEAPPROVEDMTCHGGROUPS TYPE STRING,
MDNROFSRCEREJECTEDMTCHGGROUPS TYPE STRING,
MDNROFSRCEOPENRECORDS TYPE STRING,
MDNROFSRCEAPPROVEDRECORDS TYPE STRING,
MDNROFSRCEREJECTEDRECORDS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMDCHNGPRCMTCKPI_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_CMDCHNGPRCMTCKPI_STR-MANDT sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDCHGPROCESSSTEPUUID sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MASTERDATACHANGEPROCESS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDCHGPROCESSSTEP sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDCHGPROCESSTYPEID sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDCHGPROCESSGOAL sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDCHGPROCESSSRCEOBJECTTYPECODE sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDCHGPROCESSSTEPADAPTER sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDCHGPROCESSSTEPTYPE sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDCHGPROCESSSTEPSTARTDATETIME sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDCHGPROCESSSTEPFINISHDATETIME sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFMTCHGGROUPS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFACTIVEMTCHGGROUPS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFSOURCEMTCHGGROUPS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFAPPROVEDMTCHGGROUPS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFOPENMTCHGGROUPS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFREJECTEDMTCHGGROUPS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFDISCARDEDRECORDS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFACTVOPENMTCHGGROUPS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFACTVAPPROVEDMTCHGGROUPS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFACTVREJECTEDMTCHGGROUPS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFACTVOPENRECORDS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFACTVAPPROVEDRECORDS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFACTVREJECTEDRECORDS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFSRCEOPENMTCHGGROUPS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFSRCEAPPROVEDMTCHGGROUPS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFSRCEREJECTEDMTCHGGROUPS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFSRCEOPENRECORDS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFSRCEAPPROVEDRECORDS sy-vline 
WA_CMDCHNGPRCMTCKPI_STR-MDNROFSRCEREJECTEDRECORDS sy-vline      INTO ld_text SEPARATED BY SPACE.

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