ABAP Select data from SAP table BAPI_CHAR_VALUES_KEYS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_CHAR_VALUES_KEYS
*  INTO TABLE @DATA(IT_BAPI_CHAR_VALUES_KEYS2).
*--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_BAPI_CHAR_VALUES_KEYS INDEX 1 INTO DATA(WA_BAPI_CHAR_VALUES_KEYS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_CHAR_VALUES_KEYS>-CLASSTYPE = 1.
<BAPI_CHAR_VALUES_KEYS>-CLASSNAME = 1.
<BAPI_CHAR_VALUES_KEYS>-CLASSTYPE = 1.
<BAPI_CHAR_VALUES_KEYS>-CHARNAME = 1.
<BAPI_CHAR_VALUES_KEYS>-CLASSNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_CHAR_VALUES_KEYS-CHARNAME, sy-vline,
  WA_BAPI_CHAR_VALUES_KEYS-CHARVALUE, sy-vline,
  WA_BAPI_CHAR_VALUES_KEYS-CHARVALUE, sy-vline,
  WA_BAPI_CHAR_VALUES_KEYS-DELETEVALUE, sy-vline,
  WA_BAPI_CHAR_VALUES_KEYS-DELETEVALUE, sy-vline,
  WA_BAPI_CHAR_VALUES_KEYS-DOCUMENTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_CHAR_VALUES_KEYS 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_BAPI_CHAR_VALUES_KEYS 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_BAPI_CHAR_VALUES_KEYS INTO WA_BAPI_CHAR_VALUES_KEYS.


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

*Conversion exit ALPHA, internal->external for field DOCUMENTNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_CHAR_VALUES_KEYS-DOCUMENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_CHAR_VALUES_KEYS-DOCUMENTNUMBER.
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_BAPI_CHAR_VALUES_KEYS_STR, 
CLASSTYPE TYPE STRING,
CLASSNAME TYPE STRING,
CLASSTYPE TYPE STRING,
CHARNAME TYPE STRING,
CLASSNAME TYPE STRING,
CHARNAME TYPE STRING,
CHARVALUE TYPE STRING,
CHARVALUE TYPE STRING,
DELETEVALUE TYPE STRING,
DELETEVALUE TYPE STRING,
DOCUMENTTYPE TYPE STRING,
DOCUMENTNUMBER TYPE STRING,
DOCUMENTTYPE TYPE STRING,
DOCUMENTVERSION TYPE STRING,
DOCUMENTPART TYPE STRING,
DOCUMENTNUMBER TYPE STRING,
TAB_INDEX TYPE STRING,
DOCUMENTVERSION TYPE STRING,
DOCUMENTPART TYPE STRING,
CHARVALUE_LONG TYPE STRING,
TAB_INDEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_CHAR_VALUES_KEYS_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_BAPI_CHAR_VALUES_KEYS_STR-CLASSTYPE sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-CLASSNAME sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-CLASSTYPE sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-CHARNAME sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-CLASSNAME sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-CHARNAME sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-CHARVALUE sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-CHARVALUE sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-DELETEVALUE sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-DELETEVALUE sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-DOCUMENTTYPE sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-DOCUMENTNUMBER sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-DOCUMENTTYPE sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-DOCUMENTVERSION sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-DOCUMENTPART sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-DOCUMENTNUMBER sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-TAB_INDEX sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-DOCUMENTVERSION sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-DOCUMENTPART sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-CHARVALUE_LONG sy-vline 
WA_BAPI_CHAR_VALUES_KEYS_STR-TAB_INDEX sy-vline      INTO ld_text SEPARATED BY SPACE.

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