ABAP Select data from SAP table PTRV_TRVCT_V 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_V 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_V. 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_V 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_V TYPE STANDARD TABLE OF PTRV_TRVCT_V,
      WA_PTRV_TRVCT_V TYPE PTRV_TRVCT_V,
      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_V> TYPE PTRV_TRVCT_V.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTRV_TRVCT_V
*  INTO TABLE @DATA(IT_PTRV_TRVCT_V2).
*--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_V INDEX 1 INTO DATA(WA_PTRV_TRVCT_V2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTRV_TRVCT_V>-V01 = 1.
<PTRV_TRVCT_V>-V02 = 1.
<PTRV_TRVCT_V>-V03 = 1.
<PTRV_TRVCT_V>-V04 = 1.
<PTRV_TRVCT_V>-V05 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTRV_TRVCT_V-V06, sy-vline,
  WA_PTRV_TRVCT_V-V07, sy-vline,
  WA_PTRV_TRVCT_V-V08, sy-vline,
  WA_PTRV_TRVCT_V-V09, sy-vline,
  WA_PTRV_TRVCT_V-V10, sy-vline,
  WA_PTRV_TRVCT_V-V11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTRV_TRVCT_V 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_V 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_V INTO WA_PTRV_TRVCT_V.


*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_V_STR, 
V01 TYPE STRING,
V02 TYPE STRING,
V03 TYPE STRING,
V04 TYPE STRING,
V05 TYPE STRING,
V06 TYPE STRING,
V07 TYPE STRING,
V08 TYPE STRING,
V09 TYPE STRING,
V10 TYPE STRING,
V11 TYPE STRING,
V12 TYPE STRING,
V13 TYPE STRING,
V14 TYPE STRING,
V15 TYPE STRING,
V16 TYPE STRING,
V17 TYPE STRING,
V18 TYPE STRING,
V19 TYPE STRING,
V20 TYPE STRING,
V21 TYPE STRING,
V22 TYPE STRING,
V23 TYPE STRING,
V24 TYPE STRING,
V25 TYPE STRING,
V26 TYPE STRING,
V27 TYPE STRING,
V28 TYPE STRING,
V29 TYPE STRING,
V30 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTRV_TRVCT_V_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_V_STR-V01 sy-vline 
WA_PTRV_TRVCT_V_STR-V02 sy-vline 
WA_PTRV_TRVCT_V_STR-V03 sy-vline 
WA_PTRV_TRVCT_V_STR-V04 sy-vline 
WA_PTRV_TRVCT_V_STR-V05 sy-vline 
WA_PTRV_TRVCT_V_STR-V06 sy-vline 
WA_PTRV_TRVCT_V_STR-V07 sy-vline 
WA_PTRV_TRVCT_V_STR-V08 sy-vline 
WA_PTRV_TRVCT_V_STR-V09 sy-vline 
WA_PTRV_TRVCT_V_STR-V10 sy-vline 
WA_PTRV_TRVCT_V_STR-V11 sy-vline 
WA_PTRV_TRVCT_V_STR-V12 sy-vline 
WA_PTRV_TRVCT_V_STR-V13 sy-vline 
WA_PTRV_TRVCT_V_STR-V14 sy-vline 
WA_PTRV_TRVCT_V_STR-V15 sy-vline 
WA_PTRV_TRVCT_V_STR-V16 sy-vline 
WA_PTRV_TRVCT_V_STR-V17 sy-vline 
WA_PTRV_TRVCT_V_STR-V18 sy-vline 
WA_PTRV_TRVCT_V_STR-V19 sy-vline 
WA_PTRV_TRVCT_V_STR-V20 sy-vline 
WA_PTRV_TRVCT_V_STR-V21 sy-vline 
WA_PTRV_TRVCT_V_STR-V22 sy-vline 
WA_PTRV_TRVCT_V_STR-V23 sy-vline 
WA_PTRV_TRVCT_V_STR-V24 sy-vline 
WA_PTRV_TRVCT_V_STR-V25 sy-vline 
WA_PTRV_TRVCT_V_STR-V26 sy-vline 
WA_PTRV_TRVCT_V_STR-V27 sy-vline 
WA_PTRV_TRVCT_V_STR-V28 sy-vline 
WA_PTRV_TRVCT_V_STR-V29 sy-vline 
WA_PTRV_TRVCT_V_STR-V30 sy-vline      INTO ld_text SEPARATED BY SPACE.

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