ABAP Select data from SAP table MDC_S_PROCESS_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDC_S_PROCESS_DATA
*  INTO TABLE @DATA(IT_MDC_S_PROCESS_DATA2).
*--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_MDC_S_PROCESS_DATA INDEX 1 INTO DATA(WA_MDC_S_PROCESS_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDC_S_PROCESS_DATA>-DESCRIPTION = 1.
<MDC_S_PROCESS_DATA>-TYPE_ID = 1.
<MDC_S_PROCESS_DATA>-GOAL = 1.
<MDC_S_PROCESS_DATA>-STATUS = 1.
<MDC_S_PROCESS_DATA>-SOURCE_OTC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MDC_S_PROCESS_DATA-WORKFLOW, sy-vline,
  WA_MDC_S_PROCESS_DATA-REQUESTOR, sy-vline,
  WA_MDC_S_PROCESS_DATA-DELETE_SOURCE, sy-vline,
  WA_MDC_S_PROCESS_DATA-CREATE_DATE, sy-vline,
  WA_MDC_S_PROCESS_DATA-CREATE_TIME, sy-vline,
  WA_MDC_S_PROCESS_DATA-CHANGE_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDC_S_PROCESS_DATA 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_MDC_S_PROCESS_DATA 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_MDC_S_PROCESS_DATA INTO WA_MDC_S_PROCESS_DATA.


*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_MDC_S_PROCESS_DATA_STR, 
DESCRIPTION TYPE STRING,
TYPE_ID TYPE STRING,
GOAL TYPE STRING,
STATUS TYPE STRING,
SOURCE_OTC TYPE STRING,
WORKFLOW TYPE STRING,
REQUESTOR TYPE STRING,
DELETE_SOURCE TYPE STRING,
CREATE_DATE TYPE STRING,
CREATE_TIME TYPE STRING,
CHANGE_DATE TYPE STRING,
CHANGE_TIME TYPE STRING,
FINISH_DATE TYPE STRING,
FINISH_TIME TYPE STRING,
UPDATE_COUNTER TYPE STRING,
STARTED TYPE STRING,
INITIALIZED TYPE STRING,
FINALIZED TYPE STRING,
LAST_STEP_FINISHED TYPE STRING,
CURRENT_STEP_NO TYPE STRING,
CHECK_POINT_ACTIVE TYPE STRING,
COMPLETE_REQUESTED TYPE STRING,
WF_DELETE_REQUESTED TYPE STRING,
SRC_DELETE_REQUESTED TYPE STRING,
FILTER_CHAIN TYPE STRING,
LOG_ERROR TYPE STRING,
LAST_ACT_KEY TYPE STRING,
PREDECESSOR_ID TYPE STRING,
FINALIZING_AT TYPE STRING,
NEXT_STEP_SCHEDULED_AT TYPE STRING,
DUPLICATE_STRATEGY TYPE STRING,
RELIABLE TYPE STRING,
ERASED TYPE STRING,
MASS_INTENTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDC_S_PROCESS_DATA_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_MDC_S_PROCESS_DATA_STR-DESCRIPTION sy-vline 
WA_MDC_S_PROCESS_DATA_STR-TYPE_ID sy-vline 
WA_MDC_S_PROCESS_DATA_STR-GOAL sy-vline 
WA_MDC_S_PROCESS_DATA_STR-STATUS sy-vline 
WA_MDC_S_PROCESS_DATA_STR-SOURCE_OTC sy-vline 
WA_MDC_S_PROCESS_DATA_STR-WORKFLOW sy-vline 
WA_MDC_S_PROCESS_DATA_STR-REQUESTOR sy-vline 
WA_MDC_S_PROCESS_DATA_STR-DELETE_SOURCE sy-vline 
WA_MDC_S_PROCESS_DATA_STR-CREATE_DATE sy-vline 
WA_MDC_S_PROCESS_DATA_STR-CREATE_TIME sy-vline 
WA_MDC_S_PROCESS_DATA_STR-CHANGE_DATE sy-vline 
WA_MDC_S_PROCESS_DATA_STR-CHANGE_TIME sy-vline 
WA_MDC_S_PROCESS_DATA_STR-FINISH_DATE sy-vline 
WA_MDC_S_PROCESS_DATA_STR-FINISH_TIME sy-vline 
WA_MDC_S_PROCESS_DATA_STR-UPDATE_COUNTER sy-vline 
WA_MDC_S_PROCESS_DATA_STR-STARTED sy-vline 
WA_MDC_S_PROCESS_DATA_STR-INITIALIZED sy-vline 
WA_MDC_S_PROCESS_DATA_STR-FINALIZED sy-vline 
WA_MDC_S_PROCESS_DATA_STR-LAST_STEP_FINISHED sy-vline 
WA_MDC_S_PROCESS_DATA_STR-CURRENT_STEP_NO sy-vline 
WA_MDC_S_PROCESS_DATA_STR-CHECK_POINT_ACTIVE sy-vline 
WA_MDC_S_PROCESS_DATA_STR-COMPLETE_REQUESTED sy-vline 
WA_MDC_S_PROCESS_DATA_STR-WF_DELETE_REQUESTED sy-vline 
WA_MDC_S_PROCESS_DATA_STR-SRC_DELETE_REQUESTED sy-vline 
WA_MDC_S_PROCESS_DATA_STR-FILTER_CHAIN sy-vline 
WA_MDC_S_PROCESS_DATA_STR-LOG_ERROR sy-vline 
WA_MDC_S_PROCESS_DATA_STR-LAST_ACT_KEY sy-vline 
WA_MDC_S_PROCESS_DATA_STR-PREDECESSOR_ID sy-vline 
WA_MDC_S_PROCESS_DATA_STR-FINALIZING_AT sy-vline 
WA_MDC_S_PROCESS_DATA_STR-NEXT_STEP_SCHEDULED_AT sy-vline 
WA_MDC_S_PROCESS_DATA_STR-DUPLICATE_STRATEGY sy-vline 
WA_MDC_S_PROCESS_DATA_STR-RELIABLE sy-vline 
WA_MDC_S_PROCESS_DATA_STR-ERASED sy-vline 
WA_MDC_S_PROCESS_DATA_STR-MASS_INTENTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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