ABAP Select data from SAP table PWBRKSDOCCHG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PWBRKSDOCCHG
*  INTO TABLE @DATA(IT_PWBRKSDOCCHG2).
*--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_PWBRKSDOCCHG INDEX 1 INTO DATA(WA_PWBRKSDOCCHG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PWBRKSDOCCHG>-MANDT = 1.
<PWBRKSDOCCHG>-SETTLMTDOC = 1.
<PWBRKSDOCCHG>-SETTLMTDOCTYPE = 1.
<PWBRKSDOCCHG>-SUPLRSETTLMTCOMPANYCODE = 1.
<PWBRKSDOCCHG>-PURCHASINGORGANIZATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PWBRKSDOCCHG-PURCHASINGGROUP, sy-vline,
  WA_PWBRKSDOCCHG-SALESORGANIZATION, sy-vline,
  WA_PWBRKSDOCCHG-DISTRIBUTIONCHANNEL, sy-vline,
  WA_PWBRKSDOCCHG-DIVISION, sy-vline,
  WA_PWBRKSDOCCHG-SETTLMTMGMTACCTGTRANSFSTS, sy-vline,
  WA_PWBRKSDOCCHG-POSTINGDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PWBRKSDOCCHG 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_PWBRKSDOCCHG 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_PWBRKSDOCCHG INTO WA_PWBRKSDOCCHG.


*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 SETTLMTDOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PWBRKSDOCCHG-SETTLMTDOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWBRKSDOCCHG-SETTLMTDOC.
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_PWBRKSDOCCHG_STR, 
MANDT TYPE STRING,
SETTLMTDOC TYPE STRING,
SETTLMTDOCTYPE TYPE STRING,
SUPLRSETTLMTCOMPANYCODE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
SALESORGANIZATION TYPE STRING,
DISTRIBUTIONCHANNEL TYPE STRING,
DIVISION TYPE STRING,
SETTLMTMGMTACCTGTRANSFSTS TYPE STRING,
POSTINGDATE TYPE STRING,
SETTLMTDOCACTIVITYREASON TYPE STRING,
PAYMENTREFERENCE TYPE STRING,
ASSIGNMENTREFERENCE TYPE STRING,
FISCALPERIOD TYPE STRING,
SETTLMTAPPLSTS TYPE STRING,
SETTLMTAPPLSTSGRP TYPE STRING,
LOGISTICSDATAENTRYCAT TYPE STRING,
LIFRE_BEGRU TYPE STRING,
LIFNR_FI_BEGRU TYPE STRING,
LNRZB_BEGRU TYPE STRING,
KUNRE_BEGRU TYPE STRING,
KUNRG_BEGRU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PWBRKSDOCCHG_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_PWBRKSDOCCHG_STR-MANDT sy-vline 
WA_PWBRKSDOCCHG_STR-SETTLMTDOC sy-vline 
WA_PWBRKSDOCCHG_STR-SETTLMTDOCTYPE sy-vline 
WA_PWBRKSDOCCHG_STR-SUPLRSETTLMTCOMPANYCODE sy-vline 
WA_PWBRKSDOCCHG_STR-PURCHASINGORGANIZATION sy-vline 
WA_PWBRKSDOCCHG_STR-PURCHASINGGROUP sy-vline 
WA_PWBRKSDOCCHG_STR-SALESORGANIZATION sy-vline 
WA_PWBRKSDOCCHG_STR-DISTRIBUTIONCHANNEL sy-vline 
WA_PWBRKSDOCCHG_STR-DIVISION sy-vline 
WA_PWBRKSDOCCHG_STR-SETTLMTMGMTACCTGTRANSFSTS sy-vline 
WA_PWBRKSDOCCHG_STR-POSTINGDATE sy-vline 
WA_PWBRKSDOCCHG_STR-SETTLMTDOCACTIVITYREASON sy-vline 
WA_PWBRKSDOCCHG_STR-PAYMENTREFERENCE sy-vline 
WA_PWBRKSDOCCHG_STR-ASSIGNMENTREFERENCE sy-vline 
WA_PWBRKSDOCCHG_STR-FISCALPERIOD sy-vline 
WA_PWBRKSDOCCHG_STR-SETTLMTAPPLSTS sy-vline 
WA_PWBRKSDOCCHG_STR-SETTLMTAPPLSTSGRP sy-vline 
WA_PWBRKSDOCCHG_STR-LOGISTICSDATAENTRYCAT sy-vline 
WA_PWBRKSDOCCHG_STR-LIFRE_BEGRU sy-vline 
WA_PWBRKSDOCCHG_STR-LIFNR_FI_BEGRU sy-vline 
WA_PWBRKSDOCCHG_STR-LNRZB_BEGRU sy-vline 
WA_PWBRKSDOCCHG_STR-KUNRE_BEGRU sy-vline 
WA_PWBRKSDOCCHG_STR-KUNRG_BEGRU sy-vline      INTO ld_text SEPARATED BY SPACE.

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