ABAP Select data from SAP table CNV_21500_PCL2_WW_WSV into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP CNV_21500_PCL2_WW_WSV 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 CNV_21500_PCL2_WW_WSV. 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 CNV_21500_PCL2_WW_WSV 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_CNV_21500_PCL2_WW_WSV TYPE STANDARD TABLE OF CNV_21500_PCL2_WW_WSV,
      WA_CNV_21500_PCL2_WW_WSV TYPE CNV_21500_PCL2_WW_WSV,
      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: <CNV_21500_PCL2_WW_WSV> TYPE CNV_21500_PCL2_WW_WSV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CNV_21500_PCL2_WW_WSV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CNV_21500_PCL2_WW_WSV
  INTO TABLE IT_CNV_21500_PCL2_WW_WSV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNV_21500_PCL2_WW_WSV
*  INTO TABLE @DATA(IT_CNV_21500_PCL2_WW_WSV2).
*--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_CNV_21500_PCL2_WW_WSV INDEX 1 INTO DATA(WA_CNV_21500_PCL2_WW_WSV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CNV_21500_PCL2_WW_WSV ASSIGNING <CNV_21500_PCL2_WW_WSV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNV_21500_PCL2_WW_WSV>-PERNR = 1.
<CNV_21500_PCL2_WW_WSV>-CNTR1 = 1.
<CNV_21500_PCL2_WW_WSV>-BEGDA = 1.
<CNV_21500_PCL2_WW_WSV>-ENDDA = 1.
<CNV_21500_PCL2_WW_WSV>-ANSTA = 1.

ENDLOOP.

LOOP AT IT_CNV_21500_PCL2_WW_WSV INTO WA_CNV_21500_PCL2_WW_WSV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNV_21500_PCL2_WW_WSV-JUPER, sy-vline,
  WA_CNV_21500_PCL2_WW_WSV-BUKRS, sy-vline,
  WA_CNV_21500_PCL2_WW_WSV-WERKS, sy-vline,
  WA_CNV_21500_PCL2_WW_WSV-BTRTL, sy-vline,
  WA_CNV_21500_PCL2_WW_WSV-PERSG, sy-vline,
  WA_CNV_21500_PCL2_WW_WSV-PERSK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNV_21500_PCL2_WW_WSV 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_CNV_21500_PCL2_WW_WSV 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_CNV_21500_PCL2_WW_WSV INTO WA_CNV_21500_PCL2_WW_WSV.


*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_CNV_21500_PCL2_WW_WSV_STR, 
PERNR TYPE STRING,
CNTR1 TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
ANSTA TYPE STRING,
JUPER TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
PERID TYPE STRING,
TEILK TYPE STRING,
EMPCT TYPE STRING,
ZTERF TYPE STRING,
SCHKZ TYPE STRING,
BESTE TYPE STRING,
BERGM TYPE STRING,
BEREG TYPE STRING,
CTTYP TYPE STRING,
ARBER TYPE STRING,
BEANC TYPE STRING,
BEAAN TYPE STRING,
BETIM TYPE STRING,
BEGWU TYPE STRING,
WAERS TYPE STRING,
BEUWG TYPE STRING,
BECAO TYPE STRING,
BEGPC TYPE STRING,
BECNR TYPE STRING,
BEMCH TYPE STRING,
BEGFB TYPE STRING,
BEGGH TYPE STRING,
RSZBL TYPE STRING,
RSZGL TYPE STRING,
RSZKE TYPE STRING,
RSZNA TYPE STRING,
RSZPN TYPE STRING,
RSZRR TYPE STRING,
RSZVW TYPE STRING,
RSZCA TYPE STRING,
RSZFF TYPE STRING,
RSZFS TYPE STRING,
RSZKN TYPE STRING,
RSZLM TYPE STRING,
RSZNO TYPE STRING,
RSZSP TYPE STRING,
RSZWG TYPE STRING,
BVPCT TYPE STRING,
BVETL TYPE STRING,
BVFAM TYPE STRING,
CNTR2 TYPE STRING,
I85Y TYPE STRING,
JTRIM TYPE STRING,
BVEKI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNV_21500_PCL2_WW_WSV_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_CNV_21500_PCL2_WW_WSV_STR-PERNR sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-CNTR1 sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BEGDA sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-ENDDA sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-ANSTA sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-JUPER sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BUKRS sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-WERKS sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BTRTL sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-PERSG sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-PERSK sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-PERID sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-TEILK sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-EMPCT sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-ZTERF sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-SCHKZ sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BESTE sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BERGM sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BEREG sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-CTTYP sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-ARBER sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BEANC sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BEAAN sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BETIM sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BEGWU sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-WAERS sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BEUWG sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BECAO sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BEGPC sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BECNR sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BEMCH sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BEGFB sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BEGGH sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZBL sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZGL sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZKE sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZNA sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZPN sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZRR sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZVW sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZCA sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZFF sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZFS sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZKN sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZLM sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZNO sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZSP sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-RSZWG sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BVPCT sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BVETL sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BVFAM sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-CNTR2 sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-I85Y sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-JTRIM sy-vline 
WA_CNV_21500_PCL2_WW_WSV_STR-BVEKI sy-vline      INTO ld_text SEPARATED BY SPACE.

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