ABAP Select data from SAP table CVDPH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CVDPH
*  INTO TABLE @DATA(IT_CVDPH2).
*--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_CVDPH INDEX 1 INTO DATA(WA_CVDPH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CVDPH>-MANDT = 1.
<CVDPH>-LOGID = 1.
<CVDPH>-DOKAR = 1.
<CVDPH>-DOKNR = 1.
<CVDPH>-DOKVR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CVDPH-DOKTL, sy-vline,
  WA_CVDPH-REASONTYP, sy-vline,
  WA_CVDPH-REASONCAT, sy-vline,
  WA_CVDPH-REASONBPR, sy-vline,
  WA_CVDPH-RECSYS, sy-vline,
  WA_CVDPH-RECIDTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CVDPH 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_CVDPH 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_CVDPH INTO WA_CVDPH.


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

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

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

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

*Conversion exit ALPHA, internal->external for field FHDOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CVDPH-FHDOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CVDPH-FHDOCNR.
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_CVDPH_STR, 
MANDT TYPE STRING,
LOGID TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
REASONTYP TYPE STRING,
REASONCAT TYPE STRING,
REASONBPR TYPE STRING,
RECSYS TYPE STRING,
RECIDTYP TYPE STRING,
RECID TYPE STRING,
ADDID TYPE STRING,
STATUS TYPE STRING,
SEFLAG TYPE STRING,
SEDAT TYPE STRING,
SETIM TYPE STRING,
CRDAT TYPE STRING,
CRTIM TYPE STRING,
CRUSER TYPE STRING,
DDOID TYPE STRING,
DDPID TYPE STRING,
FDOCAR TYPE STRING,
FDOCNR TYPE STRING,
FDOCVR TYPE STRING,
FDOCTL TYPE STRING,
FHDOCAR TYPE STRING,
FHDOCNR TYPE STRING,
FHDOCVR TYPE STRING,
FHDOCTL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CVDPH_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_CVDPH_STR-MANDT sy-vline 
WA_CVDPH_STR-LOGID sy-vline 
WA_CVDPH_STR-DOKAR sy-vline 
WA_CVDPH_STR-DOKNR sy-vline 
WA_CVDPH_STR-DOKVR sy-vline 
WA_CVDPH_STR-DOKTL sy-vline 
WA_CVDPH_STR-REASONTYP sy-vline 
WA_CVDPH_STR-REASONCAT sy-vline 
WA_CVDPH_STR-REASONBPR sy-vline 
WA_CVDPH_STR-RECSYS sy-vline 
WA_CVDPH_STR-RECIDTYP sy-vline 
WA_CVDPH_STR-RECID sy-vline 
WA_CVDPH_STR-ADDID sy-vline 
WA_CVDPH_STR-STATUS sy-vline 
WA_CVDPH_STR-SEFLAG sy-vline 
WA_CVDPH_STR-SEDAT sy-vline 
WA_CVDPH_STR-SETIM sy-vline 
WA_CVDPH_STR-CRDAT sy-vline 
WA_CVDPH_STR-CRTIM sy-vline 
WA_CVDPH_STR-CRUSER sy-vline 
WA_CVDPH_STR-DDOID sy-vline 
WA_CVDPH_STR-DDPID sy-vline 
WA_CVDPH_STR-FDOCAR sy-vline 
WA_CVDPH_STR-FDOCNR sy-vline 
WA_CVDPH_STR-FDOCVR sy-vline 
WA_CVDPH_STR-FDOCTL sy-vline 
WA_CVDPH_STR-FHDOCAR sy-vline 
WA_CVDPH_STR-FHDOCNR sy-vline 
WA_CVDPH_STR-FHDOCVR sy-vline 
WA_CVDPH_STR-FHDOCTL sy-vline      INTO ld_text SEPARATED BY SPACE.

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