ABAP Select data from SAP table /SAPTRX/BAPI_TRK_CONTROL_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPTRX/BAPI_TRK_CONTROL_DATA
*  INTO TABLE @DATA(IT_/SAPTRX/BAPI_TRK_CONTROL_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_/SAPTRX/BAPI_TRK_CONTROL_DATA INDEX 1 INTO DATA(WA_/SAPTRX/BAPI_TRK_CONTROL_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPTRX/BAPI_TRK_CONTROL_DATA>-APPSYS = 1.
</SAPTRX/BAPI_TRK_CONTROL_DATA>-APPOBJTYPE = 1.
</SAPTRX/BAPI_TRK_CONTROL_DATA>-APPOBJID = 1.
</SAPTRX/BAPI_TRK_CONTROL_DATA>-PARAMNAME = 1.
</SAPTRX/BAPI_TRK_CONTROL_DATA>-PARAMINDEX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPTRX/BAPI_TRK_CONTROL_DATA-LANGUAGE, sy-vline,
  WA_/SAPTRX/BAPI_TRK_CONTROL_DATA-VALUE, sy-vline,
  WA_/SAPTRX/BAPI_TRK_CONTROL_DATA-LENGTH, sy-vline,
  WA_/SAPTRX/BAPI_TRK_CONTROL_DATA-DATATYPE, sy-vline,
  WA_/SAPTRX/BAPI_TRK_CONTROL_DATA-ACTION, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_/SAPTRX/BAPI_TRK_CONTROL_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_/SAPTRX/BAPI_TRK_CONTROL_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_/SAPTRX/BAPI_TRK_CONTROL_DATA INTO WA_/SAPTRX/BAPI_TRK_CONTROL_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.

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

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/BAPI_TRK_CONTROL_DATA-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/BAPI_TRK_CONTROL_DATA-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/BAPI_TRK_CONTROL_DATA-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/BAPI_TRK_CONTROL_DATA-DATATYPE.
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_/SAPTRX/BAPI_TRK_CONTROL_DATA_STR, 
APPSYS TYPE STRING,
APPOBJTYPE TYPE STRING,
APPOBJID TYPE STRING,
PARAMNAME TYPE STRING,
PARAMINDEX TYPE STRING,
LANGUAGE TYPE STRING,
VALUE TYPE STRING,
LENGTH TYPE STRING,
DATATYPE TYPE STRING,
ACTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPTRX/BAPI_TRK_CONTROL_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_/SAPTRX/BAPI_TRK_CONTROL_DATA_STR-APPSYS sy-vline 
WA_/SAPTRX/BAPI_TRK_CONTROL_DATA_STR-APPOBJTYPE sy-vline 
WA_/SAPTRX/BAPI_TRK_CONTROL_DATA_STR-APPOBJID sy-vline 
WA_/SAPTRX/BAPI_TRK_CONTROL_DATA_STR-PARAMNAME sy-vline 
WA_/SAPTRX/BAPI_TRK_CONTROL_DATA_STR-PARAMINDEX sy-vline 
WA_/SAPTRX/BAPI_TRK_CONTROL_DATA_STR-LANGUAGE sy-vline 
WA_/SAPTRX/BAPI_TRK_CONTROL_DATA_STR-VALUE sy-vline 
WA_/SAPTRX/BAPI_TRK_CONTROL_DATA_STR-LENGTH sy-vline 
WA_/SAPTRX/BAPI_TRK_CONTROL_DATA_STR-DATATYPE sy-vline 
WA_/SAPTRX/BAPI_TRK_CONTROL_DATA_STR-ACTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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