ABAP Select data from SAP table CMDBPCHGPROC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMDBPCHGPROC
*  INTO TABLE @DATA(IT_CMDBPCHGPROC2).
*--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_CMDBPCHGPROC INDEX 1 INTO DATA(WA_CMDBPCHGPROC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMDBPCHGPROC>-MANDT = 1.
<CMDBPCHGPROC>-MASTERDATACHANGEPROCESS = 1.
<CMDBPCHGPROC>-MDCHGPROCESSDESCRIPTION = 1.
<CMDBPCHGPROC>-MDCHGPROCESSTYPEID = 1.
<CMDBPCHGPROC>-MDCHGPROCESSGOAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMDBPCHGPROC-MDCHGPROCESSSTATUSSTATECODE, sy-vline,
  WA_CMDBPCHGPROC-MDCHGPROCESSSTATUS, sy-vline,
  WA_CMDBPCHGPROC-CREATEDBYUSER, sy-vline,
  WA_CMDBPCHGPROC-CREATEDBYUSERNAME, sy-vline,
  WA_CMDBPCHGPROC-CREATIONDATE, sy-vline,
  WA_CMDBPCHGPROC-CREATIONYEARMONTH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMDBPCHGPROC 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_CMDBPCHGPROC 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_CMDBPCHGPROC INTO WA_CMDBPCHGPROC.


*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 CUNIT, internal->external for field MDCHGPROCAVGPROCGDAYSUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMDBPCHGPROC-MDCHGPROCAVGPROCGDAYSUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMDBPCHGPROC-MDCHGPROCAVGPROCGDAYSUNIT.
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_CMDBPCHGPROC_STR, 
MANDT TYPE STRING,
MASTERDATACHANGEPROCESS TYPE STRING,
MDCHGPROCESSDESCRIPTION TYPE STRING,
MDCHGPROCESSTYPEID TYPE STRING,
MDCHGPROCESSGOAL TYPE STRING,
MDCHGPROCESSSTATUSSTATECODE TYPE STRING,
MDCHGPROCESSSTATUS TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATEDBYUSERNAME TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONYEARMONTH TYPE STRING,
MDCHGPROCESSCREATIONTIME TYPE STRING,
MDCHGPROCESSWORKFLOWTEMPLATE TYPE STRING,
MDCHGPROCESSCHANGEDATE TYPE STRING,
MDCHGPROCESSCHANGETIME TYPE STRING,
MDCHGPROCESSFINISHDATE TYPE STRING,
MDCHGPROCESSFINISHTIME TYPE STRING,
MDCHGPROCESSCHKPOINTISACTIVE TYPE STRING,
MDCHGPROCESSPREDECESSOR TYPE STRING,
MDCHGPROCESSFINALDATETIME TYPE STRING,
MDCHGPROCESSNEXTSTPATDATETIME TYPE STRING,
MDCHGPROCESSDUPLICATESTRATEGY TYPE STRING,
MDCHGPROCAVGPROCGDAYS TYPE STRING,
MDCHGPROCAVGPROCGDAYSUNIT TYPE STRING,
MDCHANGEPROCESSCOUNT TYPE STRING,
MDCHGPROCESSISFINISHED TYPE STRING,
MDCHGPROCESSNMBROFSRCERECORDS TYPE STRING,
MDCHGPROCMODIFDOBJECTSCOUNT TYPE STRING,
MDCHGPROCVALDTNERRORCOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMDBPCHGPROC_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_CMDBPCHGPROC_STR-MANDT sy-vline 
WA_CMDBPCHGPROC_STR-MASTERDATACHANGEPROCESS sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSDESCRIPTION sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSTYPEID sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSGOAL sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSSTATUSSTATECODE sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSSTATUS sy-vline 
WA_CMDBPCHGPROC_STR-CREATEDBYUSER sy-vline 
WA_CMDBPCHGPROC_STR-CREATEDBYUSERNAME sy-vline 
WA_CMDBPCHGPROC_STR-CREATIONDATE sy-vline 
WA_CMDBPCHGPROC_STR-CREATIONYEARMONTH sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSCREATIONTIME sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSWORKFLOWTEMPLATE sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSCHANGEDATE sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSCHANGETIME sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSFINISHDATE sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSFINISHTIME sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSCHKPOINTISACTIVE sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSPREDECESSOR sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSFINALDATETIME sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSNEXTSTPATDATETIME sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSDUPLICATESTRATEGY sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCAVGPROCGDAYS sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCAVGPROCGDAYSUNIT sy-vline 
WA_CMDBPCHGPROC_STR-MDCHANGEPROCESSCOUNT sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSISFINISHED sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCESSNMBROFSRCERECORDS sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCMODIFDOBJECTSCOUNT sy-vline 
WA_CMDBPCHGPROC_STR-MDCHGPROCVALDTNERRORCOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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