ABAP Select data from SAP table IVE_S_INCINV_CURRENCIES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IVE_S_INCINV_CURRENCIES
*  INTO TABLE @DATA(IT_IVE_S_INCINV_CURRENCIES2).
*--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_IVE_S_INCINV_CURRENCIES INDEX 1 INTO DATA(WA_IVE_S_INCINV_CURRENCIES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IVE_S_INCINV_CURRENCIES>-CURTP = 1.
<IVE_S_INCINV_CURRENCIES>-WAERS = 1.
<IVE_S_INCINV_CURRENCIES>-AREWR = 1.
<IVE_S_INCINV_CURRENCIES>-AREWR_NEU = 1.
<IVE_S_INCINV_CURRENCIES>-BASIS_DM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IVE_S_INCINV_CURRENCIES-REEWR, sy-vline,
  WA_IVE_S_INCINV_CURRENCIES-REWRT, sy-vline,
  WA_IVE_S_INCINV_CURRENCIES-WEWRT, sy-vline,
  WA_IVE_S_INCINV_CURRENCIES-DMBTR, sy-vline,
  WA_IVE_S_INCINV_CURRENCIES-NRWHW, sy-vline,
  WA_IVE_S_INCINV_CURRENCIES-COWRT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IVE_S_INCINV_CURRENCIES 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_IVE_S_INCINV_CURRENCIES 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_IVE_S_INCINV_CURRENCIES INTO WA_IVE_S_INCINV_CURRENCIES.


*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 EXCRT, internal->external for field WKURS_GR
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_IVE_S_INCINV_CURRENCIES-WKURS_GR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IVE_S_INCINV_CURRENCIES-WKURS_GR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field WKURS_IR
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_IVE_S_INCINV_CURRENCIES-WKURS_IR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IVE_S_INCINV_CURRENCIES-WKURS_IR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field WKURS_NEU
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_IVE_S_INCINV_CURRENCIES-WKURS_NEU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IVE_S_INCINV_CURRENCIES-WKURS_NEU.
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_IVE_S_INCINV_CURRENCIES_STR, 
CURTP TYPE STRING,
WAERS TYPE STRING,
AREWR TYPE STRING,
AREWR_NEU TYPE STRING,
BASIS_DM TYPE STRING,
REEWR TYPE STRING,
REWRT TYPE STRING,
WEWRT TYPE STRING,
DMBTR TYPE STRING,
NRWHW TYPE STRING,
COWRT TYPE STRING,
AREWB_NEW TYPE STRING,
REWRB_NEW TYPE STRING,
AREWB TYPE STRING,
REWRB TYPE STRING,
WEWRB TYPE STRING,
KUDIF TYPE STRING,
KUDIF_NEU TYPE STRING,
WKURS_GR TYPE STRING,
WKURS_IR TYPE STRING,
WKURS_NEU TYPE STRING,
KUDIF_GR TYPE STRING,
KUDIF_IR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IVE_S_INCINV_CURRENCIES_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_IVE_S_INCINV_CURRENCIES_STR-CURTP sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-WAERS sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-AREWR sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-AREWR_NEU sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-BASIS_DM sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-REEWR sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-REWRT sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-WEWRT sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-DMBTR sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-NRWHW sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-COWRT sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-AREWB_NEW sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-REWRB_NEW sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-AREWB sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-REWRB sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-WEWRB sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-KUDIF sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-KUDIF_NEU sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-WKURS_GR sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-WKURS_IR sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-WKURS_NEU sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-KUDIF_GR sy-vline 
WA_IVE_S_INCINV_CURRENCIES_STR-KUDIF_IR sy-vline      INTO ld_text SEPARATED BY SPACE.

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