ABAP Select data from SAP table VVIYCEXP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VVIYCEXP
*  INTO TABLE @DATA(IT_VVIYCEXP2).
*--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_VVIYCEXP INDEX 1 INTO DATA(WA_VVIYCEXP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VVIYCEXP>-MANDT = 1.
<VVIYCEXP>-INTRENO = 1.
<VVIYCEXP>-EXPTYPE = 1.
<VVIYCEXP>-VALIDFROM = 1.
<VVIYCEXP>-VALIDTO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VVIYCEXP-CAP, sy-vline,
  WA_VVIYCEXP-MARKUP, sy-vline,
  WA_VVIYCEXP-BYAMOUNT, sy-vline,
  WA_VVIYCEXP-BYPERCENT, sy-vline,
  WA_VVIYCEXP-FIXEDAMOUNT, sy-vline,
  WA_VVIYCEXP-MTCPERCENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VVIYCEXP 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_VVIYCEXP 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_VVIYCEXP INTO WA_VVIYCEXP.


*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 REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_VVIYCEXP-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVIYCEXP-VALIDTO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field MARKUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VVIYCEXP-MARKUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVIYCEXP-MARKUP.
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_VVIYCEXP_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
EXPTYPE TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
CAP TYPE STRING,
MARKUP TYPE STRING,
BYAMOUNT TYPE STRING,
BYPERCENT TYPE STRING,
FIXEDAMOUNT TYPE STRING,
MTCPERCENT TYPE STRING,
WAERS TYPE STRING,
SHORTFALL TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VVIYCEXP_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_VVIYCEXP_STR-MANDT sy-vline 
WA_VVIYCEXP_STR-INTRENO sy-vline 
WA_VVIYCEXP_STR-EXPTYPE sy-vline 
WA_VVIYCEXP_STR-VALIDFROM sy-vline 
WA_VVIYCEXP_STR-VALIDTO sy-vline 
WA_VVIYCEXP_STR-CAP sy-vline 
WA_VVIYCEXP_STR-MARKUP sy-vline 
WA_VVIYCEXP_STR-BYAMOUNT sy-vline 
WA_VVIYCEXP_STR-BYPERCENT sy-vline 
WA_VVIYCEXP_STR-FIXEDAMOUNT sy-vline 
WA_VVIYCEXP_STR-MTCPERCENT sy-vline 
WA_VVIYCEXP_STR-WAERS sy-vline 
WA_VVIYCEXP_STR-SHORTFALL sy-vline 
WA_VVIYCEXP_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.