ABAP Select data from SAP table PTRV_TRVCT_R 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_R 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_R. 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_R 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_R TYPE STANDARD TABLE OF PTRV_TRVCT_R,
      WA_PTRV_TRVCT_R TYPE PTRV_TRVCT_R,
      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_R> TYPE PTRV_TRVCT_R.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTRV_TRVCT_R
*  INTO TABLE @DATA(IT_PTRV_TRVCT_R2).
*--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_R INDEX 1 INTO DATA(WA_PTRV_TRVCT_R2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTRV_TRVCT_R>-R01 = 1.
<PTRV_TRVCT_R>-R02 = 1.
<PTRV_TRVCT_R>-R03 = 1.
<PTRV_TRVCT_R>-R04 = 1.
<PTRV_TRVCT_R>-R05 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTRV_TRVCT_R-R06, sy-vline,
  WA_PTRV_TRVCT_R-R07, sy-vline,
  WA_PTRV_TRVCT_R-R08, sy-vline,
  WA_PTRV_TRVCT_R-R09, sy-vline,
  WA_PTRV_TRVCT_R-R10, sy-vline,
  WA_PTRV_TRVCT_R-R11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTRV_TRVCT_R 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_R 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_R INTO WA_PTRV_TRVCT_R.


*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_R_STR, 
R01 TYPE STRING,
R02 TYPE STRING,
R03 TYPE STRING,
R04 TYPE STRING,
R05 TYPE STRING,
R06 TYPE STRING,
R07 TYPE STRING,
R08 TYPE STRING,
R09 TYPE STRING,
R10 TYPE STRING,
R11 TYPE STRING,
R12 TYPE STRING,
R13 TYPE STRING,
R14 TYPE STRING,
R15 TYPE STRING,
R16 TYPE STRING,
R17 TYPE STRING,
R18 TYPE STRING,
R19 TYPE STRING,
R20 TYPE STRING,
R21 TYPE STRING,
R22 TYPE STRING,
R23 TYPE STRING,
R24 TYPE STRING,
R25 TYPE STRING,
R26 TYPE STRING,
R27 TYPE STRING,
R28 TYPE STRING,
R29 TYPE STRING,
R30 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTRV_TRVCT_R_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_R_STR-R01 sy-vline 
WA_PTRV_TRVCT_R_STR-R02 sy-vline 
WA_PTRV_TRVCT_R_STR-R03 sy-vline 
WA_PTRV_TRVCT_R_STR-R04 sy-vline 
WA_PTRV_TRVCT_R_STR-R05 sy-vline 
WA_PTRV_TRVCT_R_STR-R06 sy-vline 
WA_PTRV_TRVCT_R_STR-R07 sy-vline 
WA_PTRV_TRVCT_R_STR-R08 sy-vline 
WA_PTRV_TRVCT_R_STR-R09 sy-vline 
WA_PTRV_TRVCT_R_STR-R10 sy-vline 
WA_PTRV_TRVCT_R_STR-R11 sy-vline 
WA_PTRV_TRVCT_R_STR-R12 sy-vline 
WA_PTRV_TRVCT_R_STR-R13 sy-vline 
WA_PTRV_TRVCT_R_STR-R14 sy-vline 
WA_PTRV_TRVCT_R_STR-R15 sy-vline 
WA_PTRV_TRVCT_R_STR-R16 sy-vline 
WA_PTRV_TRVCT_R_STR-R17 sy-vline 
WA_PTRV_TRVCT_R_STR-R18 sy-vline 
WA_PTRV_TRVCT_R_STR-R19 sy-vline 
WA_PTRV_TRVCT_R_STR-R20 sy-vline 
WA_PTRV_TRVCT_R_STR-R21 sy-vline 
WA_PTRV_TRVCT_R_STR-R22 sy-vline 
WA_PTRV_TRVCT_R_STR-R23 sy-vline 
WA_PTRV_TRVCT_R_STR-R24 sy-vline 
WA_PTRV_TRVCT_R_STR-R25 sy-vline 
WA_PTRV_TRVCT_R_STR-R26 sy-vline 
WA_PTRV_TRVCT_R_STR-R27 sy-vline 
WA_PTRV_TRVCT_R_STR-R28 sy-vline 
WA_PTRV_TRVCT_R_STR-R29 sy-vline 
WA_PTRV_TRVCT_R_STR-R30 sy-vline      INTO ld_text SEPARATED BY SPACE.

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