ABAP Select data from SAP table PTRV_TRVCT_U into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTRV_TRVCT_U
*  INTO TABLE @DATA(IT_PTRV_TRVCT_U2).
*--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_PTRV_TRVCT_U INDEX 1 INTO DATA(WA_PTRV_TRVCT_U2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTRV_TRVCT_U>-U01 = 1.
<PTRV_TRVCT_U>-U02 = 1.
<PTRV_TRVCT_U>-U03 = 1.
<PTRV_TRVCT_U>-U04 = 1.
<PTRV_TRVCT_U>-U05 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTRV_TRVCT_U-U06, sy-vline,
  WA_PTRV_TRVCT_U-U07, sy-vline,
  WA_PTRV_TRVCT_U-U08, sy-vline,
  WA_PTRV_TRVCT_U-U09, sy-vline,
  WA_PTRV_TRVCT_U-U10, sy-vline,
  WA_PTRV_TRVCT_U-U11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTRV_TRVCT_U 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_PTRV_TRVCT_U 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_PTRV_TRVCT_U INTO WA_PTRV_TRVCT_U.


*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_PTRV_TRVCT_U_STR, 
U01 TYPE STRING,
U02 TYPE STRING,
U03 TYPE STRING,
U04 TYPE STRING,
U05 TYPE STRING,
U06 TYPE STRING,
U07 TYPE STRING,
U08 TYPE STRING,
U09 TYPE STRING,
U10 TYPE STRING,
U11 TYPE STRING,
U12 TYPE STRING,
U13 TYPE STRING,
U14 TYPE STRING,
U15 TYPE STRING,
U16 TYPE STRING,
U17 TYPE STRING,
U18 TYPE STRING,
U19 TYPE STRING,
U20 TYPE STRING,
U21 TYPE STRING,
U22 TYPE STRING,
U23 TYPE STRING,
U24 TYPE STRING,
U25 TYPE STRING,
U26 TYPE STRING,
U27 TYPE STRING,
U28 TYPE STRING,
U29 TYPE STRING,
U30 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTRV_TRVCT_U_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_PTRV_TRVCT_U_STR-U01 sy-vline 
WA_PTRV_TRVCT_U_STR-U02 sy-vline 
WA_PTRV_TRVCT_U_STR-U03 sy-vline 
WA_PTRV_TRVCT_U_STR-U04 sy-vline 
WA_PTRV_TRVCT_U_STR-U05 sy-vline 
WA_PTRV_TRVCT_U_STR-U06 sy-vline 
WA_PTRV_TRVCT_U_STR-U07 sy-vline 
WA_PTRV_TRVCT_U_STR-U08 sy-vline 
WA_PTRV_TRVCT_U_STR-U09 sy-vline 
WA_PTRV_TRVCT_U_STR-U10 sy-vline 
WA_PTRV_TRVCT_U_STR-U11 sy-vline 
WA_PTRV_TRVCT_U_STR-U12 sy-vline 
WA_PTRV_TRVCT_U_STR-U13 sy-vline 
WA_PTRV_TRVCT_U_STR-U14 sy-vline 
WA_PTRV_TRVCT_U_STR-U15 sy-vline 
WA_PTRV_TRVCT_U_STR-U16 sy-vline 
WA_PTRV_TRVCT_U_STR-U17 sy-vline 
WA_PTRV_TRVCT_U_STR-U18 sy-vline 
WA_PTRV_TRVCT_U_STR-U19 sy-vline 
WA_PTRV_TRVCT_U_STR-U20 sy-vline 
WA_PTRV_TRVCT_U_STR-U21 sy-vline 
WA_PTRV_TRVCT_U_STR-U22 sy-vline 
WA_PTRV_TRVCT_U_STR-U23 sy-vline 
WA_PTRV_TRVCT_U_STR-U24 sy-vline 
WA_PTRV_TRVCT_U_STR-U25 sy-vline 
WA_PTRV_TRVCT_U_STR-U26 sy-vline 
WA_PTRV_TRVCT_U_STR-U27 sy-vline 
WA_PTRV_TRVCT_U_STR-U28 sy-vline 
WA_PTRV_TRVCT_U_STR-U29 sy-vline 
WA_PTRV_TRVCT_U_STR-U30 sy-vline      INTO ld_text SEPARATED BY SPACE.

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