ABAP Select data from SAP table PTRV_TRVCT_B 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_B 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_B. 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_B 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_B TYPE STANDARD TABLE OF PTRV_TRVCT_B,
      WA_PTRV_TRVCT_B TYPE PTRV_TRVCT_B,
      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_B> TYPE PTRV_TRVCT_B.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTRV_TRVCT_B
*  INTO TABLE @DATA(IT_PTRV_TRVCT_B2).
*--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_B INDEX 1 INTO DATA(WA_PTRV_TRVCT_B2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTRV_TRVCT_B>-B01 = 1.
<PTRV_TRVCT_B>-B02 = 1.
<PTRV_TRVCT_B>-B03 = 1.
<PTRV_TRVCT_B>-B04 = 1.
<PTRV_TRVCT_B>-B05 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTRV_TRVCT_B-B06, sy-vline,
  WA_PTRV_TRVCT_B-B07, sy-vline,
  WA_PTRV_TRVCT_B-B08, sy-vline,
  WA_PTRV_TRVCT_B-B09, sy-vline,
  WA_PTRV_TRVCT_B-B10, sy-vline,
  WA_PTRV_TRVCT_B-B11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTRV_TRVCT_B 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_B 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_B INTO WA_PTRV_TRVCT_B.


*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_B_STR, 
B01 TYPE STRING,
B02 TYPE STRING,
B03 TYPE STRING,
B04 TYPE STRING,
B05 TYPE STRING,
B06 TYPE STRING,
B07 TYPE STRING,
B08 TYPE STRING,
B09 TYPE STRING,
B10 TYPE STRING,
B11 TYPE STRING,
B12 TYPE STRING,
B13 TYPE STRING,
B14 TYPE STRING,
B15 TYPE STRING,
B16 TYPE STRING,
B17 TYPE STRING,
B18 TYPE STRING,
B19 TYPE STRING,
B20 TYPE STRING,
B21 TYPE STRING,
B22 TYPE STRING,
B23 TYPE STRING,
B24 TYPE STRING,
B25 TYPE STRING,
B26 TYPE STRING,
B27 TYPE STRING,
B28 TYPE STRING,
B29 TYPE STRING,
B30 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTRV_TRVCT_B_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_B_STR-B01 sy-vline 
WA_PTRV_TRVCT_B_STR-B02 sy-vline 
WA_PTRV_TRVCT_B_STR-B03 sy-vline 
WA_PTRV_TRVCT_B_STR-B04 sy-vline 
WA_PTRV_TRVCT_B_STR-B05 sy-vline 
WA_PTRV_TRVCT_B_STR-B06 sy-vline 
WA_PTRV_TRVCT_B_STR-B07 sy-vline 
WA_PTRV_TRVCT_B_STR-B08 sy-vline 
WA_PTRV_TRVCT_B_STR-B09 sy-vline 
WA_PTRV_TRVCT_B_STR-B10 sy-vline 
WA_PTRV_TRVCT_B_STR-B11 sy-vline 
WA_PTRV_TRVCT_B_STR-B12 sy-vline 
WA_PTRV_TRVCT_B_STR-B13 sy-vline 
WA_PTRV_TRVCT_B_STR-B14 sy-vline 
WA_PTRV_TRVCT_B_STR-B15 sy-vline 
WA_PTRV_TRVCT_B_STR-B16 sy-vline 
WA_PTRV_TRVCT_B_STR-B17 sy-vline 
WA_PTRV_TRVCT_B_STR-B18 sy-vline 
WA_PTRV_TRVCT_B_STR-B19 sy-vline 
WA_PTRV_TRVCT_B_STR-B20 sy-vline 
WA_PTRV_TRVCT_B_STR-B21 sy-vline 
WA_PTRV_TRVCT_B_STR-B22 sy-vline 
WA_PTRV_TRVCT_B_STR-B23 sy-vline 
WA_PTRV_TRVCT_B_STR-B24 sy-vline 
WA_PTRV_TRVCT_B_STR-B25 sy-vline 
WA_PTRV_TRVCT_B_STR-B26 sy-vline 
WA_PTRV_TRVCT_B_STR-B27 sy-vline 
WA_PTRV_TRVCT_B_STR-B28 sy-vline 
WA_PTRV_TRVCT_B_STR-B29 sy-vline 
WA_PTRV_TRVCT_B_STR-B30 sy-vline      INTO ld_text SEPARATED BY SPACE.

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