ABAP Select data from SAP table MDC_KPI_MTC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MDC_KPI_MTC 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_KPI_MTC. 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_KPI_MTC 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_KPI_MTC TYPE STANDARD TABLE OF MDC_KPI_MTC,
      WA_MDC_KPI_MTC TYPE MDC_KPI_MTC,
      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_KPI_MTC> TYPE MDC_KPI_MTC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDC_KPI_MTC
*  INTO TABLE @DATA(IT_MDC_KPI_MTC2).
*--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_KPI_MTC INDEX 1 INTO DATA(WA_MDC_KPI_MTC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDC_KPI_MTC>-PROCESS_ID = 1.
<MDC_KPI_MTC>-PROCESS_STEP_NO = 1.
<MDC_KPI_MTC>-EXCEPTIONS = 1.
<MDC_KPI_MTC>-ERRORS = 1.
<MDC_KPI_MTC>-WARNINGS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MDC_KPI_MTC-GROUPS, sy-vline,
  WA_MDC_KPI_MTC-ACTIVES, sy-vline,
  WA_MDC_KPI_MTC-SOURCES, sy-vline,
  WA_MDC_KPI_MTC-APPROVED, sy-vline,
  WA_MDC_KPI_MTC-OPEN, sy-vline,
  WA_MDC_KPI_MTC-REJECTED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDC_KPI_MTC 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_KPI_MTC 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_KPI_MTC INTO WA_MDC_KPI_MTC.


*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_KPI_MTC_STR, 
PROCESS_ID TYPE STRING,
PROCESS_STEP_NO TYPE STRING,
EXCEPTIONS TYPE STRING,
ERRORS TYPE STRING,
WARNINGS TYPE STRING,
GROUPS TYPE STRING,
ACTIVES TYPE STRING,
SOURCES TYPE STRING,
APPROVED TYPE STRING,
OPEN TYPE STRING,
REJECTED TYPE STRING,
DISCARDED_RECORDS TYPE STRING,
STATUS_ACTIVES TYPE STRING,
OPEN TYPE STRING,
APPROVED TYPE STRING,
REJECTED TYPE STRING,
OPEN_RECORDS TYPE STRING,
APPROVED_RECORDS TYPE STRING,
REJECTED_RECORDS TYPE STRING,
STATUS_SOURCES TYPE STRING,
OPEN TYPE STRING,
APPROVED TYPE STRING,
REJECTED TYPE STRING,
OPEN_RECORDS TYPE STRING,
APPROVED_RECORDS TYPE STRING,
REJECTED_RECORDS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDC_KPI_MTC_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_KPI_MTC_STR-PROCESS_ID sy-vline 
WA_MDC_KPI_MTC_STR-PROCESS_STEP_NO sy-vline 
WA_MDC_KPI_MTC_STR-EXCEPTIONS sy-vline 
WA_MDC_KPI_MTC_STR-ERRORS sy-vline 
WA_MDC_KPI_MTC_STR-WARNINGS sy-vline 
WA_MDC_KPI_MTC_STR-GROUPS sy-vline 
WA_MDC_KPI_MTC_STR-ACTIVES sy-vline 
WA_MDC_KPI_MTC_STR-SOURCES sy-vline 
WA_MDC_KPI_MTC_STR-APPROVED sy-vline 
WA_MDC_KPI_MTC_STR-OPEN sy-vline 
WA_MDC_KPI_MTC_STR-REJECTED sy-vline 
WA_MDC_KPI_MTC_STR-DISCARDED_RECORDS sy-vline 
WA_MDC_KPI_MTC_STR-STATUS_ACTIVES sy-vline 
WA_MDC_KPI_MTC_STR-OPEN sy-vline 
WA_MDC_KPI_MTC_STR-APPROVED sy-vline 
WA_MDC_KPI_MTC_STR-REJECTED sy-vline 
WA_MDC_KPI_MTC_STR-OPEN_RECORDS sy-vline 
WA_MDC_KPI_MTC_STR-APPROVED_RECORDS sy-vline 
WA_MDC_KPI_MTC_STR-REJECTED_RECORDS sy-vline 
WA_MDC_KPI_MTC_STR-STATUS_SOURCES sy-vline 
WA_MDC_KPI_MTC_STR-OPEN sy-vline 
WA_MDC_KPI_MTC_STR-APPROVED sy-vline 
WA_MDC_KPI_MTC_STR-REJECTED sy-vline 
WA_MDC_KPI_MTC_STR-OPEN_RECORDS sy-vline 
WA_MDC_KPI_MTC_STR-APPROVED_RECORDS sy-vline 
WA_MDC_KPI_MTC_STR-REJECTED_RECORDS sy-vline      INTO ld_text SEPARATED BY SPACE.

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