ABAP Select data from SAP table TRADS_LIST_REVERSAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRADS_LIST_REVERSAL
*  INTO TABLE @DATA(IT_TRADS_LIST_REVERSAL2).
*--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_TRADS_LIST_REVERSAL INDEX 1 INTO DATA(WA_TRADS_LIST_REVERSAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRADS_LIST_REVERSAL>-STATE = 1.
<TRADS_LIST_REVERSAL>-ACCOUNTING_CODE = 1.
<TRADS_LIST_REVERSAL>-VALUATION_AREA = 1.
<TRADS_LIST_REVERSAL>-PRODUCT_TYPE = 1.
<TRADS_LIST_REVERSAL>-TRANSACTION_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRADS_LIST_REVERSAL-COM_VAL_CLASS, sy-vline,
  WA_TRADS_LIST_REVERSAL-VALUATION_CLASS, sy-vline,
  WA_TRADS_LIST_REVERSAL-SECURITY_ID, sy-vline,
  WA_TRADS_LIST_REVERSAL-SECURITY_ACCOUNT, sy-vline,
  WA_TRADS_LIST_REVERSAL-ACCOUNT_GROUP, sy-vline,
  WA_TRADS_LIST_REVERSAL-PORTFOLIO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRADS_LIST_REVERSAL 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_TRADS_LIST_REVERSAL 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_TRADS_LIST_REVERSAL INTO WA_TRADS_LIST_REVERSAL.


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

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

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

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

*Conversion exit ABPSP, internal->external for field WBS_ELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_TRADS_LIST_REVERSAL-WBS_ELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRADS_LIST_REVERSAL-WBS_ELEMENT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field PROFIT_CENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRADS_LIST_REVERSAL-PROFIT_CENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRADS_LIST_REVERSAL-PROFIT_CENTER.
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_TRADS_LIST_REVERSAL_STR, 
STATE TYPE STRING,
ACCOUNTING_CODE TYPE STRING,
VALUATION_AREA TYPE STRING,
PRODUCT_TYPE TYPE STRING,
TRANSACTION_TYPE TYPE STRING,
COM_VAL_CLASS TYPE STRING,
VALUATION_CLASS TYPE STRING,
SECURITY_ID TYPE STRING,
SECURITY_ACCOUNT TYPE STRING,
ACCOUNT_GROUP TYPE STRING,
PORTFOLIO TYPE STRING,
TRADER TYPE STRING,
LOANS_CONTRACT TYPE STRING,
DEAL_NUMBER TYPE STRING,
POSITION_ACCOUNT TYPE STRING,
LOT_ID TYPE STRING,
FLAG_LONG_SHORT TYPE STRING,
FUND TYPE STRING,
GRANT_NBR TYPE STRING,
WBS_ELEMENT TYPE STRING,
COST_CENTER TYPE STRING,
PROFIT_CENTER TYPE STRING,
FUNCTIONAL_AREA TYPE STRING,
KEY_DATE TYPE STRING,
FLOWTYPE_INCOME TYPE STRING,
TRD_POSTING_DATE TYPE STRING,
FLOWTYPE TYPE STRING,
BUSTRANSID TYPE STRING,
BUSTRANSCAT TYPE STRING,
POSITION_AMT TYPE STRING,
POSITION_CURR TYPE STRING,
VALUATION_AMT TYPE STRING,
VALUATION_CURR TYPE STRING,
SECURITY_ID_TEXT TYPE STRING,
FI_DOCUMENT_DATE TYPE STRING,
FI_POSTING_DATE TYPE STRING,
FI_POSTING_PERIOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRADS_LIST_REVERSAL_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_TRADS_LIST_REVERSAL_STR-STATE sy-vline 
WA_TRADS_LIST_REVERSAL_STR-ACCOUNTING_CODE sy-vline 
WA_TRADS_LIST_REVERSAL_STR-VALUATION_AREA sy-vline 
WA_TRADS_LIST_REVERSAL_STR-PRODUCT_TYPE sy-vline 
WA_TRADS_LIST_REVERSAL_STR-TRANSACTION_TYPE sy-vline 
WA_TRADS_LIST_REVERSAL_STR-COM_VAL_CLASS sy-vline 
WA_TRADS_LIST_REVERSAL_STR-VALUATION_CLASS sy-vline 
WA_TRADS_LIST_REVERSAL_STR-SECURITY_ID sy-vline 
WA_TRADS_LIST_REVERSAL_STR-SECURITY_ACCOUNT sy-vline 
WA_TRADS_LIST_REVERSAL_STR-ACCOUNT_GROUP sy-vline 
WA_TRADS_LIST_REVERSAL_STR-PORTFOLIO sy-vline 
WA_TRADS_LIST_REVERSAL_STR-TRADER sy-vline 
WA_TRADS_LIST_REVERSAL_STR-LOANS_CONTRACT sy-vline 
WA_TRADS_LIST_REVERSAL_STR-DEAL_NUMBER sy-vline 
WA_TRADS_LIST_REVERSAL_STR-POSITION_ACCOUNT sy-vline 
WA_TRADS_LIST_REVERSAL_STR-LOT_ID sy-vline 
WA_TRADS_LIST_REVERSAL_STR-FLAG_LONG_SHORT sy-vline 
WA_TRADS_LIST_REVERSAL_STR-FUND sy-vline 
WA_TRADS_LIST_REVERSAL_STR-GRANT_NBR sy-vline 
WA_TRADS_LIST_REVERSAL_STR-WBS_ELEMENT sy-vline 
WA_TRADS_LIST_REVERSAL_STR-COST_CENTER sy-vline 
WA_TRADS_LIST_REVERSAL_STR-PROFIT_CENTER sy-vline 
WA_TRADS_LIST_REVERSAL_STR-FUNCTIONAL_AREA sy-vline 
WA_TRADS_LIST_REVERSAL_STR-KEY_DATE sy-vline 
WA_TRADS_LIST_REVERSAL_STR-FLOWTYPE_INCOME sy-vline 
WA_TRADS_LIST_REVERSAL_STR-TRD_POSTING_DATE sy-vline 
WA_TRADS_LIST_REVERSAL_STR-FLOWTYPE sy-vline 
WA_TRADS_LIST_REVERSAL_STR-BUSTRANSID sy-vline 
WA_TRADS_LIST_REVERSAL_STR-BUSTRANSCAT sy-vline 
WA_TRADS_LIST_REVERSAL_STR-POSITION_AMT sy-vline 
WA_TRADS_LIST_REVERSAL_STR-POSITION_CURR sy-vline 
WA_TRADS_LIST_REVERSAL_STR-VALUATION_AMT sy-vline 
WA_TRADS_LIST_REVERSAL_STR-VALUATION_CURR sy-vline 
WA_TRADS_LIST_REVERSAL_STR-SECURITY_ID_TEXT sy-vline 
WA_TRADS_LIST_REVERSAL_STR-FI_DOCUMENT_DATE sy-vline 
WA_TRADS_LIST_REVERSAL_STR-FI_POSTING_DATE sy-vline 
WA_TRADS_LIST_REVERSAL_STR-FI_POSTING_PERIOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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