ABAP Select data from SAP table /MDG/_S_IS_PP_CCTR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /MDG/_S_IS_PP_CCTR 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 /MDG/_S_IS_PP_CCTR. 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 /MDG/_S_IS_PP_CCTR 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_/MDG/_S_IS_PP_CCTR TYPE STANDARD TABLE OF /MDG/_S_IS_PP_CCTR,
      WA_/MDG/_S_IS_PP_CCTR TYPE /MDG/_S_IS_PP_CCTR,
      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: </MDG/_S_IS_PP_CCTR> TYPE /MDG/_S_IS_PP_CCTR.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /MDG/_S_IS_PP_CCTR
  INTO TABLE IT_/MDG/_S_IS_PP_CCTR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MDG/_S_IS_PP_CCTR
*  INTO TABLE @DATA(IT_/MDG/_S_IS_PP_CCTR2).
*--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_/MDG/_S_IS_PP_CCTR INDEX 1 INTO DATA(WA_/MDG/_S_IS_PP_CCTR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/MDG/_S_IS_PP_CCTR ASSIGNING </MDG/_S_IS_PP_CCTR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MDG/_S_IS_PP_CCTR>-SYSTEM = 1.
</MDG/_S_IS_PP_CCTR>-COAREA = 1.
</MDG/_S_IS_PP_CCTR>-CCTR = 1.
</MDG/_S_IS_PP_CCTR>-ACCTRBAR = 1.
</MDG/_S_IS_PP_CCTR>-ACCTRCGY = 1.

ENDLOOP.

LOOP AT IT_/MDG/_S_IS_PP_CCTR INTO WA_/MDG/_S_IS_PP_CCTR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MDG/_S_IS_PP_CCTR-ACCTRRPU, sy-vline,
  WA_/MDG/_S_IS_PP_CCTR-ACCTRRTX, sy-vline,
  WA_/MDG/_S_IS_PP_CCTR-CCODECCTR, sy-vline,
  WA_/MDG/_S_IS_PP_CCTR-CCTRCCTRN, sy-vline,
  WA_/MDG/_S_IS_PP_CCTR-CCTRDEPT, sy-vline,
  WA_/MDG/_S_IS_PP_CCTR-CCTRLKAPP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MDG/_S_IS_PP_CCTR 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_/MDG/_S_IS_PP_CCTR 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_/MDG/_S_IS_PP_CCTR INTO WA_/MDG/_S_IS_PP_CCTR.


*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 ALPHA, internal->external for field SYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MDG/_S_IS_PP_CCTR-SYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MDG/_S_IS_PP_CCTR-SYSTEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MDG/_S_IS_PP_CCTR-CCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MDG/_S_IS_PP_CCTR-CCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CCTRCCTRN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MDG/_S_IS_PP_CCTR-CCTRCCTRN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MDG/_S_IS_PP_CCTR-CCTRCCTRN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CCTRLSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MDG/_S_IS_PP_CCTR-CCTRLSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MDG/_S_IS_PP_CCTR-CCTRLSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PCTRCCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MDG/_S_IS_PP_CCTR-PCTRCCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MDG/_S_IS_PP_CCTR-PCTRCCTR.
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_/MDG/_S_IS_PP_CCTR_STR, 
SYSTEM TYPE STRING,
COAREA TYPE STRING,
CCTR TYPE STRING,
ACCTRBAR TYPE STRING,
ACCTRCGY TYPE STRING,
ACCTRRPU TYPE STRING,
ACCTRRTX TYPE STRING,
CCODECCTR TYPE STRING,
CCTRCCTRN TYPE STRING,
CCTRDEPT TYPE STRING,
CCTRLKAPP TYPE STRING,
CCTRLKARP TYPE STRING,
CCTRLKASC TYPE STRING,
CCTRLKCUP TYPE STRING,
CCTRLKPPC TYPE STRING,
CCTRLKPRV TYPE STRING,
CCTRLKPSC TYPE STRING,
CCTRLSYS TYPE STRING,
CCTRNAME TYPE STRING,
CCTRQTYRQ TYPE STRING,
CCTRRESPP TYPE STRING,
CCTRSTDHC TYPE STRING,
CCTRTDAT TYPE STRING,
CURRCCTR TYPE STRING,
FDATECCTR TYPE STRING,
FUNCCCTR TYPE STRING,
PCTRCCTR TYPE STRING,
TDATECCTR TYPE STRING,
TXTMI TYPE STRING,
TXTSH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MDG/_S_IS_PP_CCTR_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_/MDG/_S_IS_PP_CCTR_STR-SYSTEM sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-COAREA sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTR sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-ACCTRBAR sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-ACCTRCGY sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-ACCTRRPU sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-ACCTRRTX sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCODECCTR sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRCCTRN sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRDEPT sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRLKAPP sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRLKARP sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRLKASC sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRLKCUP sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRLKPPC sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRLKPRV sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRLKPSC sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRLSYS sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRNAME sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRQTYRQ sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRRESPP sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRSTDHC sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CCTRTDAT sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-CURRCCTR sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-FDATECCTR sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-FUNCCCTR sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-PCTRCCTR sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-TDATECCTR sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-TXTMI sy-vline 
WA_/MDG/_S_IS_PP_CCTR_STR-TXTSH sy-vline      INTO ld_text SEPARATED BY SPACE.

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