ABAP Select data from SAP table TRCCS_POSITION_DISPLAY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRCCS_POSITION_DISPLAY
*  INTO TABLE @DATA(IT_TRCCS_POSITION_DISPLAY2).
*--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_TRCCS_POSITION_DISPLAY INDEX 1 INTO DATA(WA_TRCCS_POSITION_DISPLAY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRCCS_POSITION_DISPLAY>-MARK = 1.
<TRCCS_POSITION_DISPLAY>-COMPANY_CODE = 1.
<TRCCS_POSITION_DISPLAY>-SECURITY_ID = 1.
<TRCCS_POSITION_DISPLAY>-SECURITY_ACCOUNT = 1.
<TRCCS_POSITION_DISPLAY>-DEAL_NUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRCCS_POSITION_DISPLAY-POSITION_ACCOUNT, sy-vline,
  WA_TRCCS_POSITION_DISPLAY-CREATE_NAME, sy-vline,
  WA_TRCCS_POSITION_DISPLAY-CREATE_DATE, sy-vline,
  WA_TRCCS_POSITION_DISPLAY-CREATE_TIME, sy-vline,
  WA_TRCCS_POSITION_DISPLAY-CREATE_TCODE, sy-vline,
  WA_TRCCS_POSITION_DISPLAY-CHANGE_NAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRCCS_POSITION_DISPLAY 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_TRCCS_POSITION_DISPLAY 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_TRCCS_POSITION_DISPLAY INTO WA_TRCCS_POSITION_DISPLAY.


*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 SECURITY_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRCCS_POSITION_DISPLAY-SECURITY_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRCCS_POSITION_DISPLAY-SECURITY_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DEAL_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRCCS_POSITION_DISPLAY-DEAL_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRCCS_POSITION_DISPLAY-DEAL_NUMBER.
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_TRCCS_POSITION_DISPLAY_STR, 
MARK TYPE STRING,
COMPANY_CODE TYPE STRING,
SECURITY_ID TYPE STRING,
SECURITY_ACCOUNT TYPE STRING,
DEAL_NUMBER TYPE STRING,
POSITION_ACCOUNT TYPE STRING,
CREATE_NAME TYPE STRING,
CREATE_DATE TYPE STRING,
CREATE_TIME TYPE STRING,
CREATE_TCODE TYPE STRING,
CHANGE_NAME TYPE STRING,
CHANGE_DATE TYPE STRING,
CHANGE_TIME TYPE STRING,
CHANGE_TCODE TYPE STRING,
TRANS_GROUP_ID TYPE STRING,
TRANSACTION_STATUS TYPE STRING,
STEP_NUMBER TYPE STRING,
STEP_NUMBER_REV TYPE STRING,
CHANGEOVER_CAT TYPE STRING,
PRODUCT_CATEGORY TYPE STRING,
PRODUCT_TYPE TYPE STRING,
TRANSACTION TYPE STRING,
COMPANY_CODE_T TYPE STRING,
PRODUCT_TYPE_T TYPE STRING,
SECURITY_ID_T TYPE STRING,
SECURITY_ACCOUNT_T TYPE STRING,
TRANSACTION_STATUS_T TYPE STRING,
TAB_CELLSTYLE TYPE STRING,
STATUS_ICON TYPE STRING,
PROTOCOL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRCCS_POSITION_DISPLAY_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_TRCCS_POSITION_DISPLAY_STR-MARK sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-COMPANY_CODE sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-SECURITY_ID sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-SECURITY_ACCOUNT sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-DEAL_NUMBER sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-POSITION_ACCOUNT sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-CREATE_NAME sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-CREATE_DATE sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-CREATE_TIME sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-CREATE_TCODE sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-CHANGE_NAME sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-CHANGE_DATE sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-CHANGE_TIME sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-CHANGE_TCODE sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-TRANS_GROUP_ID sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-TRANSACTION_STATUS sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-STEP_NUMBER sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-STEP_NUMBER_REV sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-CHANGEOVER_CAT sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-PRODUCT_CATEGORY sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-PRODUCT_TYPE sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-TRANSACTION sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-COMPANY_CODE_T sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-PRODUCT_TYPE_T sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-SECURITY_ID_T sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-SECURITY_ACCOUNT_T sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-TRANSACTION_STATUS_T sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-TAB_CELLSTYLE sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-STATUS_ICON sy-vline 
WA_TRCCS_POSITION_DISPLAY_STR-PROTOCOL sy-vline      INTO ld_text SEPARATED BY SPACE.

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