ABAP Select data from SAP table VDVDRISKCLASS into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VDVDRISKCLASS 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 VDVDRISKCLASS. 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 VDVDRISKCLASS 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_VDVDRISKCLASS TYPE STANDARD TABLE OF VDVDRISKCLASS,
      WA_VDVDRISKCLASS TYPE VDVDRISKCLASS,
      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: <VDVDRISKCLASS> TYPE VDVDRISKCLASS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VDVDRISKCLASS
*  INTO TABLE @DATA(IT_VDVDRISKCLASS2).
*--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_VDVDRISKCLASS INDEX 1 INTO DATA(WA_VDVDRISKCLASS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VDVDRISKCLASS>-MANDT = 1.
<VDVDRISKCLASS>-BUKRS = 1.
<VDVDRISKCLASS>-SARCHIV = 1.
<VDVDRISKCLASS>-RANL = 1.
<VDVDRISKCLASS>-RISKCLASS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VDVDRISKCLASS-DATERISK, sy-vline,
  WA_VDVDRISKCLASS-MODID, sy-vline,
  WA_VDVDRISKCLASS-RBDID, sy-vline,
  WA_VDVDRISKCLASS-RBDNR, sy-vline,
  WA_VDVDRISKCLASS-RERF, sy-vline,
  WA_VDVDRISKCLASS-DERF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VDVDRISKCLASS 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_VDVDRISKCLASS 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_VDVDRISKCLASS INTO WA_VDVDRISKCLASS.


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

*Conversion exit ALPHA, internal->external for field RBDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VDVDRISKCLASS-RBDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VDVDRISKCLASS-RBDNR.
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_VDVDRISKCLASS_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
SARCHIV TYPE STRING,
RANL TYPE STRING,
RISKCLASS TYPE STRING,
DATERISK TYPE STRING,
MODID TYPE STRING,
RBDID TYPE STRING,
RBDNR TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VDVDRISKCLASS_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_VDVDRISKCLASS_STR-MANDT sy-vline 
WA_VDVDRISKCLASS_STR-BUKRS sy-vline 
WA_VDVDRISKCLASS_STR-SARCHIV sy-vline 
WA_VDVDRISKCLASS_STR-RANL sy-vline 
WA_VDVDRISKCLASS_STR-RISKCLASS sy-vline 
WA_VDVDRISKCLASS_STR-DATERISK sy-vline 
WA_VDVDRISKCLASS_STR-MODID sy-vline 
WA_VDVDRISKCLASS_STR-RBDID sy-vline 
WA_VDVDRISKCLASS_STR-RBDNR sy-vline 
WA_VDVDRISKCLASS_STR-RERF sy-vline 
WA_VDVDRISKCLASS_STR-DERF sy-vline 
WA_VDVDRISKCLASS_STR-TERF sy-vline 
WA_VDVDRISKCLASS_STR-REHER sy-vline 
WA_VDVDRISKCLASS_STR-RBEAR sy-vline 
WA_VDVDRISKCLASS_STR-DBEAR sy-vline 
WA_VDVDRISKCLASS_STR-TBEAR sy-vline 
WA_VDVDRISKCLASS_STR-RBHER sy-vline 
WA_VDVDRISKCLASS_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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