ABAP Select data from SAP table PTRV_DOC_HD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PTRV_DOC_HD 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_DOC_HD. 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_DOC_HD 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_DOC_HD TYPE STANDARD TABLE OF PTRV_DOC_HD,
      WA_PTRV_DOC_HD TYPE PTRV_DOC_HD,
      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_DOC_HD> TYPE PTRV_DOC_HD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTRV_DOC_HD
*  INTO TABLE @DATA(IT_PTRV_DOC_HD2).
*--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_DOC_HD INDEX 1 INTO DATA(WA_PTRV_DOC_HD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTRV_DOC_HD>-CLIENT = 1.
<PTRV_DOC_HD>-AWREF = 1.
<PTRV_DOC_HD>-AWORG = 1.
<PTRV_DOC_HD>-GLVOR = 1.
<PTRV_DOC_HD>-INT_GLVOR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTRV_DOC_HD-BUKRS, sy-vline,
  WA_PTRV_DOC_HD-BUDAT, sy-vline,
  WA_PTRV_DOC_HD-BLDAT, sy-vline,
  WA_PTRV_DOC_HD-GJAHR, sy-vline,
  WA_PTRV_DOC_HD-MONAT, sy-vline,
  WA_PTRV_DOC_HD-XBLNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTRV_DOC_HD 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_DOC_HD 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_DOC_HD INTO WA_PTRV_DOC_HD.


*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.

*Conversion exit ALPHA, internal->external for field AWREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PTRV_DOC_HD-AWREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTRV_DOC_HD-AWREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PTRV_DOC_HD-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTRV_DOC_HD-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECEIVER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PTRV_DOC_HD-RECEIVER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTRV_DOC_HD-RECEIVER.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_PTRV_DOC_HD_STR, 
CLIENT TYPE STRING,
AWREF TYPE STRING,
AWORG TYPE STRING,
GLVOR TYPE STRING,
INT_GLVOR TYPE STRING,
BUKRS TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
GJAHR TYPE STRING,
MONAT TYPE STRING,
XBLNR TYPE STRING,
BLART TYPE STRING,
RUNID TYPE STRING,
COMMI TYPE STRING,
LEADING_BUKRS TYPE STRING,
UEBNR TYPE STRING,
RECEIVER TYPE STRING,
CHECKED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTRV_DOC_HD_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_DOC_HD_STR-CLIENT sy-vline 
WA_PTRV_DOC_HD_STR-AWREF sy-vline 
WA_PTRV_DOC_HD_STR-AWORG sy-vline 
WA_PTRV_DOC_HD_STR-GLVOR sy-vline 
WA_PTRV_DOC_HD_STR-INT_GLVOR sy-vline 
WA_PTRV_DOC_HD_STR-BUKRS sy-vline 
WA_PTRV_DOC_HD_STR-BUDAT sy-vline 
WA_PTRV_DOC_HD_STR-BLDAT sy-vline 
WA_PTRV_DOC_HD_STR-GJAHR sy-vline 
WA_PTRV_DOC_HD_STR-MONAT sy-vline 
WA_PTRV_DOC_HD_STR-XBLNR sy-vline 
WA_PTRV_DOC_HD_STR-BLART sy-vline 
WA_PTRV_DOC_HD_STR-RUNID sy-vline 
WA_PTRV_DOC_HD_STR-COMMI sy-vline 
WA_PTRV_DOC_HD_STR-LEADING_BUKRS sy-vline 
WA_PTRV_DOC_HD_STR-UEBNR sy-vline 
WA_PTRV_DOC_HD_STR-RECEIVER sy-vline 
WA_PTRV_DOC_HD_STR-CHECKED sy-vline      INTO ld_text SEPARATED BY SPACE.

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