ABAP Select data from SAP table PURGDOCPARTNRROW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PURGDOCPARTNRROW
*  INTO TABLE @DATA(IT_PURGDOCPARTNRROW2).
*--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_PURGDOCPARTNRROW INDEX 1 INTO DATA(WA_PURGDOCPARTNRROW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PURGDOCPARTNRROW>-MANDT = 1.
<PURGDOCPARTNRROW>-EBELN = 1.
<PURGDOCPARTNRROW>-EBELP = 1.
<PURGDOCPARTNRROW>-EKORG = 1.
<PURGDOCPARTNRROW>-LTSNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PURGDOCPARTNRROW-WERKS, sy-vline,
  WA_PURGDOCPARTNRROW-PARVW, sy-vline,
  WA_PURGDOCPARTNRROW-PARZA, sy-vline,
  WA_PURGDOCPARTNRROW-ERNAM, sy-vline,
  WA_PURGDOCPARTNRROW-ERDAT, sy-vline,
  WA_PURGDOCPARTNRROW-LIFN2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PURGDOCPARTNRROW 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_PURGDOCPARTNRROW 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_PURGDOCPARTNRROW INTO WA_PURGDOCPARTNRROW.


*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 EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PURGDOCPARTNRROW-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PURGDOCPARTNRROW-EBELN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field LIFN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PURGDOCPARTNRROW-LIFN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PURGDOCPARTNRROW-LIFN2.
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_PURGDOCPARTNRROW_STR, 
MANDT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
EKORG TYPE STRING,
LTSNR TYPE STRING,
WERKS TYPE STRING,
PARVW TYPE STRING,
PARZA TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
LIFN2 TYPE STRING,
DEFPA TYPE STRING,
HITYP TYPE STRING,
PARNR TYPE STRING,
PERNR TYPE STRING,
PRFRE TYPE STRING,
BOLRE TYPE STRING,
HISTUNR TYPE STRING,
_DATAAGING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PURGDOCPARTNRROW_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_PURGDOCPARTNRROW_STR-MANDT sy-vline 
WA_PURGDOCPARTNRROW_STR-EBELN sy-vline 
WA_PURGDOCPARTNRROW_STR-EBELP sy-vline 
WA_PURGDOCPARTNRROW_STR-EKORG sy-vline 
WA_PURGDOCPARTNRROW_STR-LTSNR sy-vline 
WA_PURGDOCPARTNRROW_STR-WERKS sy-vline 
WA_PURGDOCPARTNRROW_STR-PARVW sy-vline 
WA_PURGDOCPARTNRROW_STR-PARZA sy-vline 
WA_PURGDOCPARTNRROW_STR-ERNAM sy-vline 
WA_PURGDOCPARTNRROW_STR-ERDAT sy-vline 
WA_PURGDOCPARTNRROW_STR-LIFN2 sy-vline 
WA_PURGDOCPARTNRROW_STR-DEFPA sy-vline 
WA_PURGDOCPARTNRROW_STR-HITYP sy-vline 
WA_PURGDOCPARTNRROW_STR-PARNR sy-vline 
WA_PURGDOCPARTNRROW_STR-PERNR sy-vline 
WA_PURGDOCPARTNRROW_STR-PRFRE sy-vline 
WA_PURGDOCPARTNRROW_STR-BOLRE sy-vline 
WA_PURGDOCPARTNRROW_STR-HISTUNR sy-vline 
WA_PURGDOCPARTNRROW_STR-_DATAAGING sy-vline      INTO ld_text SEPARATED BY SPACE.

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