ABAP Select data from SAP table CLSELINPUT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CLSELINPUT
*  INTO TABLE @DATA(IT_CLSELINPUT2).
*--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_CLSELINPUT INDEX 1 INTO DATA(WA_CLSELINPUT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CLSELINPUT>-MANDT = 1.
<CLSELINPUT>-ABTEIL = 1.
<CLSELINPUT>-ARTXT = 1.
<CLSELINPUT>-CLASS = 1.
<CLSELINPUT>-KLART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CLSELINPUT-KLBEZ, sy-vline,
  WA_CLSELINPUT-ANZSEL, sy-vline,
  WA_CLSELINPUT-ANZUO, sy-vline,
  WA_CLSELINPUT-SICHT, sy-vline,
  WA_CLSELINPUT-STEXT, sy-vline,
  WA_CLSELINPUT-TA_TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CLSELINPUT 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_CLSELINPUT 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_CLSELINPUT INTO WA_CLSELINPUT.


*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 ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CLSELINPUT-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CLSELINPUT-LANGUAGE.
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_CLSELINPUT_STR, 
MANDT TYPE STRING,
ABTEIL TYPE STRING,
ARTXT TYPE STRING,
CLASS TYPE STRING,
KLART TYPE STRING,
KLBEZ TYPE STRING,
ANZSEL TYPE STRING,
ANZUO TYPE STRING,
SICHT TYPE STRING,
STEXT TYPE STRING,
TA_TEXT TYPE STRING,
REP_TEXT TYPE STRING,
PROGRAMM TYPE STRING,
TCODE TYPE STRING,
FILTER TYPE STRING,
FILTER_TITLE TYPE STRING,
FILTER_ACTIVE TYPE STRING,
OBTAB TYPE STRING,
MAFID TYPE STRING,
OBJ_INT TYPE STRING,
OBTXT TYPE STRING,
DAR_FREI TYPE STRING,
DAR_UNB TYPE STRING,
DAR_SPERR TYPE STRING,
DAR_UNV TYPE STRING,
KEY_DATE TYPE STRING,
LOWER_DATE TYPE STRING,
PARAMETERICON TYPE STRING,
MAX_HITS TYPE STRING,
NOT_ALL_OBTABS TYPE STRING,
LANGUAGE TYPE STRING,
NEUTR TYPE STRING,
NVALUE TYPE STRING,
NCHART TYPE STRING,
SVALUE TYPE STRING,
SCHART TYPE STRING,
EXPL_HIER TYPE STRING,
COMPRESS_CLASS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CLSELINPUT_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_CLSELINPUT_STR-MANDT sy-vline 
WA_CLSELINPUT_STR-ABTEIL sy-vline 
WA_CLSELINPUT_STR-ARTXT sy-vline 
WA_CLSELINPUT_STR-CLASS sy-vline 
WA_CLSELINPUT_STR-KLART sy-vline 
WA_CLSELINPUT_STR-KLBEZ sy-vline 
WA_CLSELINPUT_STR-ANZSEL sy-vline 
WA_CLSELINPUT_STR-ANZUO sy-vline 
WA_CLSELINPUT_STR-SICHT sy-vline 
WA_CLSELINPUT_STR-STEXT sy-vline 
WA_CLSELINPUT_STR-TA_TEXT sy-vline 
WA_CLSELINPUT_STR-REP_TEXT sy-vline 
WA_CLSELINPUT_STR-PROGRAMM sy-vline 
WA_CLSELINPUT_STR-TCODE sy-vline 
WA_CLSELINPUT_STR-FILTER sy-vline 
WA_CLSELINPUT_STR-FILTER_TITLE sy-vline 
WA_CLSELINPUT_STR-FILTER_ACTIVE sy-vline 
WA_CLSELINPUT_STR-OBTAB sy-vline 
WA_CLSELINPUT_STR-MAFID sy-vline 
WA_CLSELINPUT_STR-OBJ_INT sy-vline 
WA_CLSELINPUT_STR-OBTXT sy-vline 
WA_CLSELINPUT_STR-DAR_FREI sy-vline 
WA_CLSELINPUT_STR-DAR_UNB sy-vline 
WA_CLSELINPUT_STR-DAR_SPERR sy-vline 
WA_CLSELINPUT_STR-DAR_UNV sy-vline 
WA_CLSELINPUT_STR-KEY_DATE sy-vline 
WA_CLSELINPUT_STR-LOWER_DATE sy-vline 
WA_CLSELINPUT_STR-PARAMETERICON sy-vline 
WA_CLSELINPUT_STR-MAX_HITS sy-vline 
WA_CLSELINPUT_STR-NOT_ALL_OBTABS sy-vline 
WA_CLSELINPUT_STR-LANGUAGE sy-vline 
WA_CLSELINPUT_STR-NEUTR sy-vline 
WA_CLSELINPUT_STR-NVALUE sy-vline 
WA_CLSELINPUT_STR-NCHART sy-vline 
WA_CLSELINPUT_STR-SVALUE sy-vline 
WA_CLSELINPUT_STR-SCHART sy-vline 
WA_CLSELINPUT_STR-EXPL_HIER sy-vline 
WA_CLSELINPUT_STR-COMPRESS_CLASS sy-vline      INTO ld_text SEPARATED BY SPACE.

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