ABAP Select data from SAP table CPED_FORMCONVIN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPED_FORMCONVIN
*  INTO TABLE @DATA(IT_CPED_FORMCONVIN2).
*--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_CPED_FORMCONVIN INDEX 1 INTO DATA(WA_CPED_FORMCONVIN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPED_FORMCONVIN>-CLIENT = 1.
<CPED_FORMCONVIN>-FORMCONVIN_GUID = 1.
<CPED_FORMCONVIN>-CONVPLACE = 1.
<CPED_FORMCONVIN>-CURRFROM = 1.
<CPED_FORMCONVIN>-UOMFROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPED_FORMCONVIN-CURRTO, sy-vline,
  WA_CPED_FORMCONVIN-UOMTO, sy-vline,
  WA_CPED_FORMCONVIN-CONVERSIONRULE, sy-vline,
  WA_CPED_FORMCONVIN-FIXEXCHRATE, sy-vline,
  WA_CPED_FORMCONVIN-FACTORFROM, sy-vline,
  WA_CPED_FORMCONVIN-FACTORTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPED_FORMCONVIN 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_CPED_FORMCONVIN 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_CPED_FORMCONVIN INTO WA_CPED_FORMCONVIN.


*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 CUNIT, internal->external for field UOMFROM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPED_FORMCONVIN-UOMFROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPED_FORMCONVIN-UOMFROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UOMTO
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPED_FORMCONVIN-UOMTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPED_FORMCONVIN-UOMTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONVERSIONRULE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CPED_FORMCONVIN-CONVERSIONRULE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPED_FORMCONVIN-CONVERSIONRULE.
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_CPED_FORMCONVIN_STR, 
CLIENT TYPE STRING,
FORMCONVIN_GUID TYPE STRING,
CONVPLACE TYPE STRING,
CURRFROM TYPE STRING,
UOMFROM TYPE STRING,
CURRTO TYPE STRING,
UOMTO TYPE STRING,
CONVERSIONRULE TYPE STRING,
FIXEXCHRATE TYPE STRING,
FACTORFROM TYPE STRING,
FACTORTO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPED_FORMCONVIN_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_CPED_FORMCONVIN_STR-CLIENT sy-vline 
WA_CPED_FORMCONVIN_STR-FORMCONVIN_GUID sy-vline 
WA_CPED_FORMCONVIN_STR-CONVPLACE sy-vline 
WA_CPED_FORMCONVIN_STR-CURRFROM sy-vline 
WA_CPED_FORMCONVIN_STR-UOMFROM sy-vline 
WA_CPED_FORMCONVIN_STR-CURRTO sy-vline 
WA_CPED_FORMCONVIN_STR-UOMTO sy-vline 
WA_CPED_FORMCONVIN_STR-CONVERSIONRULE sy-vline 
WA_CPED_FORMCONVIN_STR-FIXEXCHRATE sy-vline 
WA_CPED_FORMCONVIN_STR-FACTORFROM sy-vline 
WA_CPED_FORMCONVIN_STR-FACTORTO sy-vline      INTO ld_text SEPARATED BY SPACE.

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