ABAP Select data from SAP table PWBRK4CLEARVH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PWBRK4CLEARVH 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 PWBRK4CLEARVH. 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 PWBRK4CLEARVH 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_PWBRK4CLEARVH TYPE STANDARD TABLE OF PWBRK4CLEARVH,
      WA_PWBRK4CLEARVH TYPE PWBRK4CLEARVH,
      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: <PWBRK4CLEARVH> TYPE PWBRK4CLEARVH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PWBRK4CLEARVH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PWBRK4CLEARVH
  INTO TABLE IT_PWBRK4CLEARVH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PWBRK4CLEARVH
*  INTO TABLE @DATA(IT_PWBRK4CLEARVH2).
*--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_PWBRK4CLEARVH INDEX 1 INTO DATA(WA_PWBRK4CLEARVH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PWBRK4CLEARVH ASSIGNING <PWBRK4CLEARVH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PWBRK4CLEARVH>-MANDT = 1.
<PWBRK4CLEARVH>-WBELN = 1.
<PWBRK4CLEARVH>-LIFRE = 1.
<PWBRK4CLEARVH>-LNRZB = 1.
<PWBRK4CLEARVH>-KUNRE = 1.

ENDLOOP.

LOOP AT IT_PWBRK4CLEARVH INTO WA_PWBRK4CLEARVH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PWBRK4CLEARVH-KUNRG, sy-vline,
  WA_PWBRK4CLEARVH-EKORG, sy-vline,
  WA_PWBRK4CLEARVH-EKGRP, sy-vline,
  WA_PWBRK4CLEARVH-VKORG, sy-vline,
  WA_PWBRK4CLEARVH-VTWEG, sy-vline,
  WA_PWBRK4CLEARVH-SPART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PWBRK4CLEARVH 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_PWBRK4CLEARVH 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_PWBRK4CLEARVH INTO WA_PWBRK4CLEARVH.


*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 WBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PWBRK4CLEARVH-WBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWBRK4CLEARVH-WBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PWBRK4CLEARVH-LIFRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWBRK4CLEARVH-LIFRE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRZB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PWBRK4CLEARVH-LNRZB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWBRK4CLEARVH-LNRZB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PWBRK4CLEARVH-KUNRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWBRK4CLEARVH-KUNRE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNRG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PWBRK4CLEARVH-KUNRG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWBRK4CLEARVH-KUNRG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RRLCG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PWBRK4CLEARVH-RRLCG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWBRK4CLEARVH-RRLCG.
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_PWBRK4CLEARVH_STR, 
MANDT TYPE STRING,
WBELN TYPE STRING,
LIFRE TYPE STRING,
LNRZB TYPE STRING,
KUNRE TYPE STRING,
KUNRG TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
BUKRS TYPE STRING,
XBLNR TYPE STRING,
ZUONR TYPE STRING,
WAERL TYPE STRING,
LFGRU TYPE STRING,
RRLCG TYPE STRING,
RRLPA TYPE STRING,
WDTYP TYPE STRING,
LFART TYPE STRING,
RFBSK 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_PWBRK4CLEARVH_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_PWBRK4CLEARVH_STR-MANDT sy-vline 
WA_PWBRK4CLEARVH_STR-WBELN sy-vline 
WA_PWBRK4CLEARVH_STR-LIFRE sy-vline 
WA_PWBRK4CLEARVH_STR-LNRZB sy-vline 
WA_PWBRK4CLEARVH_STR-KUNRE sy-vline 
WA_PWBRK4CLEARVH_STR-KUNRG sy-vline 
WA_PWBRK4CLEARVH_STR-EKORG sy-vline 
WA_PWBRK4CLEARVH_STR-EKGRP sy-vline 
WA_PWBRK4CLEARVH_STR-VKORG sy-vline 
WA_PWBRK4CLEARVH_STR-VTWEG sy-vline 
WA_PWBRK4CLEARVH_STR-SPART sy-vline 
WA_PWBRK4CLEARVH_STR-BUKRS sy-vline 
WA_PWBRK4CLEARVH_STR-XBLNR sy-vline 
WA_PWBRK4CLEARVH_STR-ZUONR sy-vline 
WA_PWBRK4CLEARVH_STR-WAERL sy-vline 
WA_PWBRK4CLEARVH_STR-LFGRU sy-vline 
WA_PWBRK4CLEARVH_STR-RRLCG sy-vline 
WA_PWBRK4CLEARVH_STR-RRLPA sy-vline 
WA_PWBRK4CLEARVH_STR-WDTYP sy-vline 
WA_PWBRK4CLEARVH_STR-LFART sy-vline 
WA_PWBRK4CLEARVH_STR-RFBSK sy-vline 
WA_PWBRK4CLEARVH_STR-LIFRE_BEGRU sy-vline 
WA_PWBRK4CLEARVH_STR-LIFNR_FI_BEGRU sy-vline 
WA_PWBRK4CLEARVH_STR-LNRZB_BEGRU sy-vline 
WA_PWBRK4CLEARVH_STR-KUNRE_BEGRU sy-vline 
WA_PWBRK4CLEARVH_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.