ABAP Select data from SAP table TRILS_DFLOW_DISPLAY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TRILS_DFLOW_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 TRILS_DFLOW_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 TRILS_DFLOW_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_TRILS_DFLOW_DISPLAY TYPE STANDARD TABLE OF TRILS_DFLOW_DISPLAY,
      WA_TRILS_DFLOW_DISPLAY TYPE TRILS_DFLOW_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: <TRILS_DFLOW_DISPLAY> TYPE TRILS_DFLOW_DISPLAY.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRILS_DFLOW_DISPLAY
*  INTO TABLE @DATA(IT_TRILS_DFLOW_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_TRILS_DFLOW_DISPLAY INDEX 1 INTO DATA(WA_TRILS_DFLOW_DISPLAY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRILS_DFLOW_DISPLAY>-TRIL_DTRANS = 1.
<TRILS_DFLOW_DISPLAY>-FLOW_NUMBER = 1.
<TRILS_DFLOW_DISPLAY>-DIS_FLOWTYPE = 1.
<TRILS_DFLOW_DISPLAY>-DIS_FLOWTYPE_T = 1.
<TRILS_DFLOW_DISPLAY>-TRIL_FLOW_CAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRILS_DFLOW_DISPLAY-HEDGE_ID, sy-vline,
  WA_TRILS_DFLOW_DISPLAY-POSITION_AMT, sy-vline,
  WA_TRILS_DFLOW_DISPLAY-POSITION_CURR, sy-vline,
  WA_TRILS_DFLOW_DISPLAY-VALUATION_AMT, sy-vline,
  WA_TRILS_DFLOW_DISPLAY-VALUATION_CURR, sy-vline,
  WA_TRILS_DFLOW_DISPLAY-TRIL_BUSTRANSID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRILS_DFLOW_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_TRILS_DFLOW_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_TRILS_DFLOW_DISPLAY INTO WA_TRILS_DFLOW_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 RFHA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRILS_DFLOW_DISPLAY-RFHA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRILS_DFLOW_DISPLAY-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_TRILS_DFLOW_DISPLAY_STR, 
TRIL_DTRANS TYPE STRING,
FLOW_NUMBER TYPE STRING,
DIS_FLOWTYPE TYPE STRING,
DIS_FLOWTYPE_T TYPE STRING,
TRIL_FLOW_CAT TYPE STRING,
HEDGE_ID TYPE STRING,
POSITION_AMT TYPE STRING,
POSITION_CURR TYPE STRING,
VALUATION_AMT TYPE STRING,
VALUATION_CURR TYPE STRING,
TRIL_BUSTRANSID TYPE STRING,
LOG_ICON_ASSESS TYPE STRING,
LOG_ICON_MEAS TYPE STRING,
VALUATION_AREA TYPE STRING,
TR_ACC_CODE TYPE STRING,
COMPANY_CODE TYPE STRING,
RFHA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRILS_DFLOW_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_TRILS_DFLOW_DISPLAY_STR-TRIL_DTRANS sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-FLOW_NUMBER sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-DIS_FLOWTYPE sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-DIS_FLOWTYPE_T sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-TRIL_FLOW_CAT sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-HEDGE_ID sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-POSITION_AMT sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-POSITION_CURR sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-VALUATION_AMT sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-VALUATION_CURR sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-TRIL_BUSTRANSID sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-LOG_ICON_ASSESS sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-LOG_ICON_MEAS sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-VALUATION_AREA sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-TR_ACC_CODE sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-COMPANY_CODE sy-vline 
WA_TRILS_DFLOW_DISPLAY_STR-RFHA sy-vline      INTO ld_text SEPARATED BY SPACE.

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