ABAP Select data from SAP table P01CVR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P01CVR 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 P01CVR. 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 P01CVR 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_P01CVR TYPE STANDARD TABLE OF P01CVR,
      WA_P01CVR TYPE P01CVR,
      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: <P01CVR> TYPE P01CVR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01CVR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01CVR
  INTO TABLE IT_P01CVR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01CVR
*  INTO TABLE @DATA(IT_P01CVR2).
*--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_P01CVR INDEX 1 INTO DATA(WA_P01CVR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01CVR ASSIGNING <P01CVR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01CVR>-MANDT = 1.
<P01CVR>-VMGRD = 1.
<P01CVR>-BLSTG = 1.
<P01CVR>-LTRGR = 1.
<P01CVR>-VMPID = 1.

ENDLOOP.

LOOP AT IT_P01CVR INTO WA_P01CVR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01CVR-PERNR, sy-vline,
  WA_P01CVR-VMART, sy-vline,
  WA_P01CVR-HANSP, sy-vline,
  WA_P01CVR-SEQNO, sy-vline,
  WA_P01CVR-IVSTG, sy-vline,
  WA_P01CVR-BWSTG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01CVR 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_P01CVR 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_P01CVR INTO WA_P01CVR.


*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_P01CVR_STR, 
MANDT TYPE STRING,
VMGRD TYPE STRING,
BLSTG TYPE STRING,
LTRGR TYPE STRING,
VMPID TYPE STRING,
PERNR TYPE STRING,
VMART TYPE STRING,
HANSP TYPE STRING,
SEQNO TYPE STRING,
IVSTG TYPE STRING,
BWSTG TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
VMSTA TYPE STRING,
AANSP TYPE STRING,
MODBV TYPE STRING,
MSTVM TYPE STRING,
VMANR TYPE STRING,
ANGRP TYPE STRING,
LURSP TYPE STRING,
LGART TYPE STRING,
BETRG TYPE STRING,
WAERS TYPE STRING,
APDAT TYPE STRING,
RNTYP TYPE STRING,
RNART TYPE STRING,
RELHR TYPE STRING,
HBTYP TYPE STRING,
ENDDA TYPE STRING,
BGRRB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01CVR_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_P01CVR_STR-MANDT sy-vline 
WA_P01CVR_STR-VMGRD sy-vline 
WA_P01CVR_STR-BLSTG sy-vline 
WA_P01CVR_STR-LTRGR sy-vline 
WA_P01CVR_STR-VMPID sy-vline 
WA_P01CVR_STR-PERNR sy-vline 
WA_P01CVR_STR-VMART sy-vline 
WA_P01CVR_STR-HANSP sy-vline 
WA_P01CVR_STR-SEQNO sy-vline 
WA_P01CVR_STR-IVSTG sy-vline 
WA_P01CVR_STR-BWSTG sy-vline 
WA_P01CVR_STR-CRDAT sy-vline 
WA_P01CVR_STR-CRNAM sy-vline 
WA_P01CVR_STR-VMSTA sy-vline 
WA_P01CVR_STR-AANSP sy-vline 
WA_P01CVR_STR-MODBV sy-vline 
WA_P01CVR_STR-MSTVM sy-vline 
WA_P01CVR_STR-VMANR sy-vline 
WA_P01CVR_STR-ANGRP sy-vline 
WA_P01CVR_STR-LURSP sy-vline 
WA_P01CVR_STR-LGART sy-vline 
WA_P01CVR_STR-BETRG sy-vline 
WA_P01CVR_STR-WAERS sy-vline 
WA_P01CVR_STR-APDAT sy-vline 
WA_P01CVR_STR-RNTYP sy-vline 
WA_P01CVR_STR-RNART sy-vline 
WA_P01CVR_STR-RELHR sy-vline 
WA_P01CVR_STR-HBTYP sy-vline 
WA_P01CVR_STR-ENDDA sy-vline 
WA_P01CVR_STR-BGRRB sy-vline      INTO ld_text SEPARATED BY SPACE.

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