ABAP Select data from SAP table TRRS_POSITION_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRRS_POSITION_ITEM
*  INTO TABLE @DATA(IT_TRRS_POSITION_ITEM2).
*--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_TRRS_POSITION_ITEM INDEX 1 INTO DATA(WA_TRRS_POSITION_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRRS_POSITION_ITEM>-GUID = 1.
<TRRS_POSITION_ITEM>-POSITION_NUMBER = 1.
<TRRS_POSITION_ITEM>-FLOW_SOURCE_CATEGORY = 1.
<TRRS_POSITION_ITEM>-FLOWTYPE = 1.
<TRRS_POSITION_ITEM>-CAT_TRL_FLOW = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRRS_POSITION_ITEM-CAT_TRS_FLOW, sy-vline,
  WA_TRRS_POSITION_ITEM-CAT_OP_FLOW, sy-vline,
  WA_TRRS_POSITION_ITEM-CAT_VAL_FLOW, sy-vline,
  WA_TRRS_POSITION_ITEM-CAT_TRANS_CLASS, sy-vline,
  WA_TRRS_POSITION_ITEM-CAT_TRANS_TYPE, sy-vline,
  WA_TRRS_POSITION_ITEM-LOCAL_AMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRRS_POSITION_ITEM 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_TRRS_POSITION_ITEM 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_TRRS_POSITION_ITEM INTO WA_TRRS_POSITION_ITEM.


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

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

*Conversion exit POSCT, internal->external for field ACTIVE_PASSIVE
CALL FUNCTION 'CONVERSION_EXIT_POSCT_OUTPUT'
  EXPORTING
    input =                      WA_TRRS_POSITION_ITEM-ACTIVE_PASSIVE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRRS_POSITION_ITEM-ACTIVE_PASSIVE.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field RFHA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRRS_POSITION_ITEM-RFHA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRRS_POSITION_ITEM-RFHA.
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_TRRS_POSITION_ITEM_STR, 
GUID TYPE STRING,
POSITION_NUMBER TYPE STRING,
FLOW_SOURCE_CATEGORY TYPE STRING,
FLOWTYPE TYPE STRING,
CAT_TRL_FLOW TYPE STRING,
CAT_TRS_FLOW TYPE STRING,
CAT_OP_FLOW TYPE STRING,
CAT_VAL_FLOW TYPE STRING,
CAT_TRANS_CLASS TYPE STRING,
CAT_TRANS_TYPE TYPE STRING,
LOCAL_AMT TYPE STRING,
LOCAL_CURR TYPE STRING,
BUSTRANSID TYPE STRING,
BUSTRANSCAT TYPE STRING,
BUSTRANSFLOWNR TYPE STRING,
DEBIT_ACCOUNT TYPE STRING,
CREDIT_ACCOUNT TYPE STRING,
ORIGIN TYPE STRING,
HOUSE_BANK TYPE STRING,
HOUSE_BANK_ACC TYPE STRING,
TRLFLOWNUMBER TYPE STRING,
FLOWNUMBER TYPE STRING,
QUANT_CAT TYPE STRING,
AMOUNT_CAT TYPE STRING,
ACTIVE_PASSIVE TYPE STRING,
TRANSACTION_TYPE TYPE STRING,
UNITS TYPE STRING,
COMPANY_CODE TYPE STRING,
SECURITY_ACCOUNT TYPE STRING,
SECURITY_ID TYPE STRING,
TRD_BUSTRANSID TYPE STRING,
TRD_BUSTRANSCAT TYPE STRING,
TRD_REBUSTRANSID TYPE STRING,
TRD_FLOWNR TYPE STRING,
TRD_STATE TYPE STRING,
POSITION_CURR TYPE STRING,
POSITION_AMT TYPE STRING,
NOMINAL_CURR TYPE STRING,
NOMINAL_AMT TYPE STRING,
POSITION_DATE TYPE STRING,
SIGN TYPE STRING,
DFT_TEXT TYPE STRING,
RFHA TYPE STRING,
SFHAZBA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRRS_POSITION_ITEM_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_TRRS_POSITION_ITEM_STR-GUID sy-vline 
WA_TRRS_POSITION_ITEM_STR-POSITION_NUMBER sy-vline 
WA_TRRS_POSITION_ITEM_STR-FLOW_SOURCE_CATEGORY sy-vline 
WA_TRRS_POSITION_ITEM_STR-FLOWTYPE sy-vline 
WA_TRRS_POSITION_ITEM_STR-CAT_TRL_FLOW sy-vline 
WA_TRRS_POSITION_ITEM_STR-CAT_TRS_FLOW sy-vline 
WA_TRRS_POSITION_ITEM_STR-CAT_OP_FLOW sy-vline 
WA_TRRS_POSITION_ITEM_STR-CAT_VAL_FLOW sy-vline 
WA_TRRS_POSITION_ITEM_STR-CAT_TRANS_CLASS sy-vline 
WA_TRRS_POSITION_ITEM_STR-CAT_TRANS_TYPE sy-vline 
WA_TRRS_POSITION_ITEM_STR-LOCAL_AMT sy-vline 
WA_TRRS_POSITION_ITEM_STR-LOCAL_CURR sy-vline 
WA_TRRS_POSITION_ITEM_STR-BUSTRANSID sy-vline 
WA_TRRS_POSITION_ITEM_STR-BUSTRANSCAT sy-vline 
WA_TRRS_POSITION_ITEM_STR-BUSTRANSFLOWNR sy-vline 
WA_TRRS_POSITION_ITEM_STR-DEBIT_ACCOUNT sy-vline 
WA_TRRS_POSITION_ITEM_STR-CREDIT_ACCOUNT sy-vline 
WA_TRRS_POSITION_ITEM_STR-ORIGIN sy-vline 
WA_TRRS_POSITION_ITEM_STR-HOUSE_BANK sy-vline 
WA_TRRS_POSITION_ITEM_STR-HOUSE_BANK_ACC sy-vline 
WA_TRRS_POSITION_ITEM_STR-TRLFLOWNUMBER sy-vline 
WA_TRRS_POSITION_ITEM_STR-FLOWNUMBER sy-vline 
WA_TRRS_POSITION_ITEM_STR-QUANT_CAT sy-vline 
WA_TRRS_POSITION_ITEM_STR-AMOUNT_CAT sy-vline 
WA_TRRS_POSITION_ITEM_STR-ACTIVE_PASSIVE sy-vline 
WA_TRRS_POSITION_ITEM_STR-TRANSACTION_TYPE sy-vline 
WA_TRRS_POSITION_ITEM_STR-UNITS sy-vline 
WA_TRRS_POSITION_ITEM_STR-COMPANY_CODE sy-vline 
WA_TRRS_POSITION_ITEM_STR-SECURITY_ACCOUNT sy-vline 
WA_TRRS_POSITION_ITEM_STR-SECURITY_ID sy-vline 
WA_TRRS_POSITION_ITEM_STR-TRD_BUSTRANSID sy-vline 
WA_TRRS_POSITION_ITEM_STR-TRD_BUSTRANSCAT sy-vline 
WA_TRRS_POSITION_ITEM_STR-TRD_REBUSTRANSID sy-vline 
WA_TRRS_POSITION_ITEM_STR-TRD_FLOWNR sy-vline 
WA_TRRS_POSITION_ITEM_STR-TRD_STATE sy-vline 
WA_TRRS_POSITION_ITEM_STR-POSITION_CURR sy-vline 
WA_TRRS_POSITION_ITEM_STR-POSITION_AMT sy-vline 
WA_TRRS_POSITION_ITEM_STR-NOMINAL_CURR sy-vline 
WA_TRRS_POSITION_ITEM_STR-NOMINAL_AMT sy-vline 
WA_TRRS_POSITION_ITEM_STR-POSITION_DATE sy-vline 
WA_TRRS_POSITION_ITEM_STR-SIGN sy-vline 
WA_TRRS_POSITION_ITEM_STR-DFT_TEXT sy-vline 
WA_TRRS_POSITION_ITEM_STR-RFHA sy-vline 
WA_TRRS_POSITION_ITEM_STR-SFHAZBA sy-vline      INTO ld_text SEPARATED BY SPACE.

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