ABAP Select data from SAP table TRSS_RECON_POSITION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRSS_RECON_POSITION
*  INTO TABLE @DATA(IT_TRSS_RECON_POSITION2).
*--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_TRSS_RECON_POSITION INDEX 1 INTO DATA(WA_TRSS_RECON_POSITION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRSS_RECON_POSITION>-MANDT = 1.
<TRSS_RECON_POSITION>-POSITION_KEY = 1.
<TRSS_RECON_POSITION>-NUMBERID = 1.
<TRSS_RECON_POSITION>-SECURITY_ID = 1.
<TRSS_RECON_POSITION>-INDEX_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRSS_RECON_POSITION-INDEX_VALUE, sy-vline,
  WA_TRSS_RECON_POSITION-POS_UNITS, sy-vline,
  WA_TRSS_RECON_POSITION-POS_NOMINAL, sy-vline,
  WA_TRSS_RECON_POSITION-POS_NOMINAL_DRWN, sy-vline,
  WA_TRSS_RECON_POSITION-POS_CURRENCY, sy-vline,
  WA_TRSS_RECON_POSITION-STOCK_EXCHANGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRSS_RECON_POSITION 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_TRSS_RECON_POSITION 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_TRSS_RECON_POSITION INTO WA_TRSS_RECON_POSITION.


*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_TRSS_RECON_POSITION-SECURITY_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRSS_RECON_POSITION-SECURITY_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SECURITY_ID_DRAWN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRSS_RECON_POSITION-SECURITY_ID_DRAWN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRSS_RECON_POSITION-SECURITY_ID_DRAWN.
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_TRSS_RECON_POSITION_STR, 
MANDT TYPE STRING,
POSITION_KEY TYPE STRING,
NUMBERID TYPE STRING,
SECURITY_ID TYPE STRING,
INDEX_NAME TYPE STRING,
INDEX_VALUE TYPE STRING,
POS_UNITS TYPE STRING,
POS_NOMINAL TYPE STRING,
POS_NOMINAL_DRWN TYPE STRING,
POS_CURRENCY TYPE STRING,
STOCK_EXCHANGE TYPE STRING,
POS_TEXT TYPE STRING,
POS_RECORD_NAME TYPE STRING,
POS_RECORD_TYPE TYPE STRING,
NOTE_ID TYPE STRING,
POS_CURRENCY2 TYPE STRING,
SECURITY_ID_TEXT TYPE STRING,
SECURITY_ID_TEXT_LONG TYPE STRING,
RECORD_TEXT TYPE STRING,
POS_REC_TYPE_TXT TYPE STRING,
QUOTATION TYPE STRING,
SEC_ACC_UNITS TYPE STRING,
SEC_ACC_NOMINAL TYPE STRING,
SEC_ACC_NOMINAL_CURR TYPE STRING,
SEC_ACC_NOMINAL_DRWN TYPE STRING,
SEC_ACC_NOMINAL_DRWN_CURR TYPE STRING,
SECURITY_ID_DRAWN TYPE STRING,
POS_UNIT_DIFF TYPE STRING,
POS_NOMINAL_DIFF TYPE STRING,
POS_NOMINAL_DIFF_CURR TYPE STRING,
POS_NOMINAL_DRWN_DIFF TYPE STRING,
POS_NOMINAL_DRWN_DIFF_CURR TYPE STRING,
POS_NUM_ERRORS TYPE STRING,
POS_ERROR_MESSAGE TYPE STRING,
POS_STATUS_ICON_TEXT TYPE STRING,
POS_MARKET_VALUE_DIFF_LC TYPE STRING,
POS_LOCAL_CURR TYPE STRING,
POS_NOTE_INDICATOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRSS_RECON_POSITION_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_TRSS_RECON_POSITION_STR-MANDT sy-vline 
WA_TRSS_RECON_POSITION_STR-POSITION_KEY sy-vline 
WA_TRSS_RECON_POSITION_STR-NUMBERID sy-vline 
WA_TRSS_RECON_POSITION_STR-SECURITY_ID sy-vline 
WA_TRSS_RECON_POSITION_STR-INDEX_NAME sy-vline 
WA_TRSS_RECON_POSITION_STR-INDEX_VALUE sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_UNITS sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_NOMINAL sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_NOMINAL_DRWN sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_CURRENCY sy-vline 
WA_TRSS_RECON_POSITION_STR-STOCK_EXCHANGE sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_TEXT sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_RECORD_NAME sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_RECORD_TYPE sy-vline 
WA_TRSS_RECON_POSITION_STR-NOTE_ID sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_CURRENCY2 sy-vline 
WA_TRSS_RECON_POSITION_STR-SECURITY_ID_TEXT sy-vline 
WA_TRSS_RECON_POSITION_STR-SECURITY_ID_TEXT_LONG sy-vline 
WA_TRSS_RECON_POSITION_STR-RECORD_TEXT sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_REC_TYPE_TXT sy-vline 
WA_TRSS_RECON_POSITION_STR-QUOTATION sy-vline 
WA_TRSS_RECON_POSITION_STR-SEC_ACC_UNITS sy-vline 
WA_TRSS_RECON_POSITION_STR-SEC_ACC_NOMINAL sy-vline 
WA_TRSS_RECON_POSITION_STR-SEC_ACC_NOMINAL_CURR sy-vline 
WA_TRSS_RECON_POSITION_STR-SEC_ACC_NOMINAL_DRWN sy-vline 
WA_TRSS_RECON_POSITION_STR-SEC_ACC_NOMINAL_DRWN_CURR sy-vline 
WA_TRSS_RECON_POSITION_STR-SECURITY_ID_DRAWN sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_UNIT_DIFF sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_NOMINAL_DIFF sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_NOMINAL_DIFF_CURR sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_NOMINAL_DRWN_DIFF sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_NOMINAL_DRWN_DIFF_CURR sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_NUM_ERRORS sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_ERROR_MESSAGE sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_STATUS_ICON_TEXT sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_MARKET_VALUE_DIFF_LC sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_LOCAL_CURR sy-vline 
WA_TRSS_RECON_POSITION_STR-POS_NOTE_INDICATOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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