ABAP Select data from SAP table CHARACTVALUELIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CHARACTVALUELIST
*  INTO TABLE @DATA(IT_CHARACTVALUELIST2).
*--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_CHARACTVALUELIST INDEX 1 INTO DATA(WA_CHARACTVALUELIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CHARACTVALUELIST>-ATPOS = 1.
<CHARACTVALUELIST>-ATINN = 1.
<CHARACTVALUELIST>-ATNAM = 1.
<CHARACTVALUELIST>-ATBEZ = 1.
<CHARACTVALUELIST>-ATKLA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CHARACTVALUELIST-ATSTT, sy-vline,
  WA_CHARACTVALUELIST-ATFORT, sy-vline,
  WA_CHARACTVALUELIST-ANZST, sy-vline,
  WA_CHARACTVALUELIST-ANZDZ, sy-vline,
  WA_CHARACTVALUELIST-EINHE, sy-vline,
  WA_CHARACTVALUELIST-ATEIN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CHARACTVALUELIST 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_CHARACTVALUELIST 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_CHARACTVALUELIST INTO WA_CHARACTVALUELIST.


*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 ATINN, internal->external for field ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_CHARACTVALUELIST-ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CHARACTVALUELIST-ATINN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EINHE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CHARACTVALUELIST-EINHE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CHARACTVALUELIST-EINHE.
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_CHARACTVALUELIST_STR, 
ATPOS TYPE STRING,
ATINN TYPE STRING,
ATNAM TYPE STRING,
ATBEZ TYPE STRING,
ATKLA TYPE STRING,
ATSTT TYPE STRING,
ATFORT TYPE STRING,
ANZST TYPE STRING,
ANZDZ TYPE STRING,
EINHE TYPE STRING,
ATEIN TYPE STRING,
ATGLA TYPE STRING,
ATSON TYPE STRING,
DATUV TYPE STRING,
ANAME TYPE STRING,
ADATU TYPE STRING,
VNAME TYPE STRING,
VDATU TYPE STRING,
CLSRL TYPE STRING,
OBJRL TYPE STRING,
LSTRING TYPE STRING,
ATWRT TYPE STRING,
ATWTB TYPE STRING,
DEP_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CHARACTVALUELIST_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_CHARACTVALUELIST_STR-ATPOS sy-vline 
WA_CHARACTVALUELIST_STR-ATINN sy-vline 
WA_CHARACTVALUELIST_STR-ATNAM sy-vline 
WA_CHARACTVALUELIST_STR-ATBEZ sy-vline 
WA_CHARACTVALUELIST_STR-ATKLA sy-vline 
WA_CHARACTVALUELIST_STR-ATSTT sy-vline 
WA_CHARACTVALUELIST_STR-ATFORT sy-vline 
WA_CHARACTVALUELIST_STR-ANZST sy-vline 
WA_CHARACTVALUELIST_STR-ANZDZ sy-vline 
WA_CHARACTVALUELIST_STR-EINHE sy-vline 
WA_CHARACTVALUELIST_STR-ATEIN sy-vline 
WA_CHARACTVALUELIST_STR-ATGLA sy-vline 
WA_CHARACTVALUELIST_STR-ATSON sy-vline 
WA_CHARACTVALUELIST_STR-DATUV sy-vline 
WA_CHARACTVALUELIST_STR-ANAME sy-vline 
WA_CHARACTVALUELIST_STR-ADATU sy-vline 
WA_CHARACTVALUELIST_STR-VNAME sy-vline 
WA_CHARACTVALUELIST_STR-VDATU sy-vline 
WA_CHARACTVALUELIST_STR-CLSRL sy-vline 
WA_CHARACTVALUELIST_STR-OBJRL sy-vline 
WA_CHARACTVALUELIST_STR-LSTRING sy-vline 
WA_CHARACTVALUELIST_STR-ATWRT sy-vline 
WA_CHARACTVALUELIST_STR-ATWTB sy-vline 
WA_CHARACTVALUELIST_STR-DEP_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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