ABAP Select data from SAP table TRSS_FLOW_DISPLAY_I into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP TRSS_FLOW_DISPLAY_I 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_FLOW_DISPLAY_I. 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_FLOW_DISPLAY_I 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_FLOW_DISPLAY_I TYPE STANDARD TABLE OF TRSS_FLOW_DISPLAY_I,
      WA_TRSS_FLOW_DISPLAY_I TYPE TRSS_FLOW_DISPLAY_I,
      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_FLOW_DISPLAY_I> TYPE TRSS_FLOW_DISPLAY_I.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRSS_FLOW_DISPLAY_I
*  INTO TABLE @DATA(IT_TRSS_FLOW_DISPLAY_I2).
*--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_FLOW_DISPLAY_I INDEX 1 INTO DATA(WA_TRSS_FLOW_DISPLAY_I2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRSS_FLOW_DISPLAY_I>-FLOWCAT_TRS = 1.
<TRSS_FLOW_DISPLAY_I>-COUPON_DATE = 1.
<TRSS_FLOW_DISPLAY_I>-COUPON_SIGN = 1.
<TRSS_FLOW_DISPLAY_I>-RAHABKI = 1.
<TRSS_FLOW_DISPLAY_I>-RAHKTID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRSS_FLOW_DISPLAY_I-SBERFIMA, sy-vline,
  WA_TRSS_FLOW_DISPLAY_I-PAYMENT_DATE, sy-vline,
  WA_TRSS_FLOW_DISPLAY_I-DFAELL, sy-vline,
  WA_TRSS_FLOW_DISPLAY_I-SWOHER, sy-vline,
  WA_TRSS_FLOW_DISPLAY_I-SEXCLVON, sy-vline,
  WA_TRSS_FLOW_DISPLAY_I-SULTVON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRSS_FLOW_DISPLAY_I 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_FLOW_DISPLAY_I 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_FLOW_DISPLAY_I INTO WA_TRSS_FLOW_DISPLAY_I.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TRSS_FLOW_DISPLAY_I_STR, 
FLOWCAT_TRS TYPE STRING,
COUPON_DATE TYPE STRING,
COUPON_SIGN TYPE STRING,
RAHABKI TYPE STRING,
RAHKTID TYPE STRING,
SBERFIMA TYPE STRING,
PAYMENT_DATE TYPE STRING,
DFAELL TYPE STRING,
SWOHER TYPE STRING,
SEXCLVON TYPE STRING,
SULTVON TYPE STRING,
SINCLBIS TYPE STRING,
SULTBIS TYPE STRING,
SVULT TYPE STRING,
SFULT TYPE STRING,
ATAGE TYPE STRING,
APERTAGE TYPE STRING,
STGBASIS TYPE STRING,
SZBMETH TYPE STRING,
SPAEXCL TYPE STRING,
SPAULT TYPE STRING,
SPEINCL TYPE STRING,
SPEULT TYPE STRING,
SSTCKKZ TYPE STRING,
SSTCKTG TYPE STRING,
SFLAT TYPE STRING,
SKOART TYPE STRING,
SKALIDWT TYPE STRING,
DGUEL_KP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRSS_FLOW_DISPLAY_I_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_FLOW_DISPLAY_I_STR-FLOWCAT_TRS sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-COUPON_DATE sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-COUPON_SIGN sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-RAHABKI sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-RAHKTID sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SBERFIMA sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-PAYMENT_DATE sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-DFAELL sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SWOHER sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SEXCLVON sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SULTVON sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SINCLBIS sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SULTBIS sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SVULT sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SFULT sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-ATAGE sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-APERTAGE sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-STGBASIS sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SZBMETH sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SPAEXCL sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SPAULT sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SPEINCL sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SPEULT sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SSTCKKZ sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SSTCKTG sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SFLAT sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SKOART sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-SKALIDWT sy-vline 
WA_TRSS_FLOW_DISPLAY_I_STR-DGUEL_KP sy-vline      INTO ld_text SEPARATED BY SPACE.

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