ABAP Select data from SAP table TRDTV_POS_SEC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRDTV_POS_SEC
*  INTO TABLE @DATA(IT_TRDTV_POS_SEC2).
*--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_TRDTV_POS_SEC INDEX 1 INTO DATA(WA_TRDTV_POS_SEC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRDTV_POS_SEC>-MANDT = 1.
<TRDTV_POS_SEC>-COMPANY_CODE = 1.
<TRDTV_POS_SEC>-VALUATION_AREA = 1.
<TRDTV_POS_SEC>-COM_VAL_CLASS = 1.
<TRDTV_POS_SEC>-SECURITY_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRDTV_POS_SEC-SECURITY_ACCOUNT, sy-vline,
  WA_TRDTV_POS_SEC-PORTFOLIO, sy-vline,
  WA_TRDTV_POS_SEC-DEAL_NUMBER, sy-vline,
  WA_TRDTV_POS_SEC-POSITION_ACCOUNT, sy-vline,
  WA_TRDTV_POS_SEC-FUND, sy-vline,
  WA_TRDTV_POS_SEC-GRANT_NBR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRDTV_POS_SEC 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_TRDTV_POS_SEC 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_TRDTV_POS_SEC INTO WA_TRDTV_POS_SEC.


*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_TRDTV_POS_SEC-SECURITY_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRDTV_POS_SEC-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_TRDTV_POS_SEC-DEAL_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRDTV_POS_SEC-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_TRDTV_POS_SEC-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRDTV_POS_SEC-GRANT_NBR.
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_TRDTV_POS_SEC_STR, 
MANDT TYPE STRING,
COMPANY_CODE TYPE STRING,
VALUATION_AREA TYPE STRING,
COM_VAL_CLASS TYPE STRING,
SECURITY_ID TYPE STRING,
SECURITY_ACCOUNT TYPE STRING,
PORTFOLIO TYPE STRING,
DEAL_NUMBER TYPE STRING,
POSITION_ACCOUNT TYPE STRING,
FUND TYPE STRING,
GRANT_NBR TYPE STRING,
STATE TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRDTV_POS_SEC_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_TRDTV_POS_SEC_STR-MANDT sy-vline 
WA_TRDTV_POS_SEC_STR-COMPANY_CODE sy-vline 
WA_TRDTV_POS_SEC_STR-VALUATION_AREA sy-vline 
WA_TRDTV_POS_SEC_STR-COM_VAL_CLASS sy-vline 
WA_TRDTV_POS_SEC_STR-SECURITY_ID sy-vline 
WA_TRDTV_POS_SEC_STR-SECURITY_ACCOUNT sy-vline 
WA_TRDTV_POS_SEC_STR-PORTFOLIO sy-vline 
WA_TRDTV_POS_SEC_STR-DEAL_NUMBER sy-vline 
WA_TRDTV_POS_SEC_STR-POSITION_ACCOUNT sy-vline 
WA_TRDTV_POS_SEC_STR-FUND sy-vline 
WA_TRDTV_POS_SEC_STR-GRANT_NBR sy-vline 
WA_TRDTV_POS_SEC_STR-STATE sy-vline 
WA_TRDTV_POS_SEC_STR-RERF sy-vline 
WA_TRDTV_POS_SEC_STR-DERF sy-vline 
WA_TRDTV_POS_SEC_STR-TERF sy-vline 
WA_TRDTV_POS_SEC_STR-REHER sy-vline 
WA_TRDTV_POS_SEC_STR-RBEAR sy-vline 
WA_TRDTV_POS_SEC_STR-DBEAR sy-vline 
WA_TRDTV_POS_SEC_STR-TBEAR sy-vline 
WA_TRDTV_POS_SEC_STR-RBHER sy-vline      INTO ld_text SEPARATED BY SPACE.

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