ABAP Select data from SAP table CVDREPORT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CVDREPORT
*  INTO TABLE @DATA(IT_CVDREPORT2).
*--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_CVDREPORT INDEX 1 INTO DATA(WA_CVDREPORT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CVDREPORT>-SUBID = 1.
<CVDREPORT>-SBGVID = 1.
<CVDREPORT>-LANGU = 1.
<CVDREPORT>-EHSDOCCAT = 1.
<CVDREPORT>-INTVERSION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CVDREPORT-REPTYPE, sy-vline,
  WA_CVDREPORT-REPSTATUS, sy-vline,
  WA_CVDREPORT-VERSION, sy-vline,
  WA_CVDREPORT-SUBVERSION, sy-vline,
  WA_CVDREPORT-GENDAT, sy-vline,
  WA_CVDREPORT-VALDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CVDREPORT 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_CVDREPORT 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_CVDREPORT INTO WA_CVDREPORT.


*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 SPEC1, internal->external for field SUBID
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_CVDREPORT-SUBID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CVDREPORT-SUBID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRID, internal->external for field SBGVID
CALL FUNCTION 'CONVERSION_EXIT_CHRID_OUTPUT'
  EXPORTING
    input =                      WA_CVDREPORT-SBGVID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CVDREPORT-SBGVID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CVDREPORT-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CVDREPORT-LANGU.
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_CVDREPORT_STR, 
SUBID TYPE STRING,
SBGVID TYPE STRING,
LANGU TYPE STRING,
EHSDOCCAT TYPE STRING,
INTVERSION TYPE STRING,
REPTYPE TYPE STRING,
REPSTATUS TYPE STRING,
VERSION TYPE STRING,
SUBVERSION TYPE STRING,
GENDAT TYPE STRING,
VALDAT TYPE STRING,
REQREASON TYPE STRING,
RELCHGFLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CVDREPORT_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_CVDREPORT_STR-SUBID sy-vline 
WA_CVDREPORT_STR-SBGVID sy-vline 
WA_CVDREPORT_STR-LANGU sy-vline 
WA_CVDREPORT_STR-EHSDOCCAT sy-vline 
WA_CVDREPORT_STR-INTVERSION sy-vline 
WA_CVDREPORT_STR-REPTYPE sy-vline 
WA_CVDREPORT_STR-REPSTATUS sy-vline 
WA_CVDREPORT_STR-VERSION sy-vline 
WA_CVDREPORT_STR-SUBVERSION sy-vline 
WA_CVDREPORT_STR-GENDAT sy-vline 
WA_CVDREPORT_STR-VALDAT sy-vline 
WA_CVDREPORT_STR-REQREASON sy-vline 
WA_CVDREPORT_STR-RELCHGFLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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