ABAP Select data from SAP table P01CVH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P01CVH 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 P01CVH. 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 P01CVH 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_P01CVH TYPE STANDARD TABLE OF P01CVH,
      WA_P01CVH TYPE P01CVH,
      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: <P01CVH> TYPE P01CVH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01CVH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01CVH
  INTO TABLE IT_P01CVH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01CVH
*  INTO TABLE @DATA(IT_P01CVH2).
*--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_P01CVH INDEX 1 INTO DATA(WA_P01CVH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01CVH ASSIGNING <P01CVH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01CVH>-MANDT = 1.
<P01CVH>-VMGRD = 1.
<P01CVH>-BLSTG = 1.
<P01CVH>-LTRGR = 1.
<P01CVH>-VMPID = 1.

ENDLOOP.

LOOP AT IT_P01CVH INTO WA_P01CVH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01CVH-PERNR, sy-vline,
  WA_P01CVH-VMART, sy-vline,
  WA_P01CVH-IVSTG, sy-vline,
  WA_P01CVH-BWSTG, sy-vline,
  WA_P01CVH-CRDAT, sy-vline,
  WA_P01CVH-CRNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01CVH 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_P01CVH 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_P01CVH INTO WA_P01CVH.


*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 PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_P01CVH-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P01CVH-GBDAT.
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_P01CVH_STR, 
MANDT TYPE STRING,
VMGRD TYPE STRING,
BLSTG TYPE STRING,
LTRGR TYPE STRING,
VMPID TYPE STRING,
PERNR TYPE STRING,
VMART TYPE STRING,
IVSTG TYPE STRING,
BWSTG TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
VMSTA TYPE STRING,
NACHN TYPE STRING,
VORNA TYPE STRING,
ASBEG TYPE STRING,
MASSN TYPE STRING,
MASSG TYPE STRING,
STAT1 TYPE STRING,
STAT2 TYPE STRING,
LSBEG TYPE STRING,
LMSSN TYPE STRING,
LMSSG TYPE STRING,
LSTA1 TYPE STRING,
LSTA2 TYPE STRING,
RNTOP TYPE STRING,
REART TYPE STRING,
GBDAT TYPE STRING,
GESCH TYPE STRING,
FAMST TYPE STRING,
FAMDT TYPE STRING,
JUPER TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
ERBNR TYPE STRING,
SBGRU TYPE STRING,
SBPRO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01CVH_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_P01CVH_STR-MANDT sy-vline 
WA_P01CVH_STR-VMGRD sy-vline 
WA_P01CVH_STR-BLSTG sy-vline 
WA_P01CVH_STR-LTRGR sy-vline 
WA_P01CVH_STR-VMPID sy-vline 
WA_P01CVH_STR-PERNR sy-vline 
WA_P01CVH_STR-VMART sy-vline 
WA_P01CVH_STR-IVSTG sy-vline 
WA_P01CVH_STR-BWSTG sy-vline 
WA_P01CVH_STR-CRDAT sy-vline 
WA_P01CVH_STR-CRNAM sy-vline 
WA_P01CVH_STR-VMSTA sy-vline 
WA_P01CVH_STR-NACHN sy-vline 
WA_P01CVH_STR-VORNA sy-vline 
WA_P01CVH_STR-ASBEG sy-vline 
WA_P01CVH_STR-MASSN sy-vline 
WA_P01CVH_STR-MASSG sy-vline 
WA_P01CVH_STR-STAT1 sy-vline 
WA_P01CVH_STR-STAT2 sy-vline 
WA_P01CVH_STR-LSBEG sy-vline 
WA_P01CVH_STR-LMSSN sy-vline 
WA_P01CVH_STR-LMSSG sy-vline 
WA_P01CVH_STR-LSTA1 sy-vline 
WA_P01CVH_STR-LSTA2 sy-vline 
WA_P01CVH_STR-RNTOP sy-vline 
WA_P01CVH_STR-REART sy-vline 
WA_P01CVH_STR-GBDAT sy-vline 
WA_P01CVH_STR-GESCH sy-vline 
WA_P01CVH_STR-FAMST sy-vline 
WA_P01CVH_STR-FAMDT sy-vline 
WA_P01CVH_STR-JUPER sy-vline 
WA_P01CVH_STR-BUKRS sy-vline 
WA_P01CVH_STR-WERKS sy-vline 
WA_P01CVH_STR-BTRTL sy-vline 
WA_P01CVH_STR-PERSG sy-vline 
WA_P01CVH_STR-PERSK sy-vline 
WA_P01CVH_STR-ERBNR sy-vline 
WA_P01CVH_STR-SBGRU sy-vline 
WA_P01CVH_STR-SBPRO sy-vline      INTO ld_text SEPARATED BY SPACE.

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