ABAP Select data from SAP table CLACL_00000296 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CLACL_00000296 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 CLACL_00000296. 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 CLACL_00000296 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_CLACL_00000296 TYPE STANDARD TABLE OF CLACL_00000296,
      WA_CLACL_00000296 TYPE CLACL_00000296,
      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: <CLACL_00000296> TYPE CLACL_00000296.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CLACL_00000296.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CLACL_00000296
  INTO TABLE IT_CLACL_00000296.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CLACL_00000296
*  INTO TABLE @DATA(IT_CLACL_000002962).
*--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_CLACL_00000296 INDEX 1 INTO DATA(WA_CLACL_000002962).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CLACL_00000296 ASSIGNING <CLACL_00000296>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CLACL_00000296>-MSGFN = 1.
<CLACL_00000296>-ATNAM = 1.
<CLACL_00000296>-POSNR = 1.
<CLACL_00000296>-ABTEI = 1.
<CLACL_00000296>-DINKB = 1.

ENDLOOP.

LOOP AT IT_CLACL_00000296 INTO WA_CLACL_00000296.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CLACL_00000296-HERKU, sy-vline,
  WA_CLACL_00000296-RELEV, sy-vline,
  WA_CLACL_00000296-DATUV, sy-vline,
  WA_CLACL_00000296-AENNR, sy-vline,
  WA_CLACL_00000296-LKENZ, sy-vline,
  WA_CLACL_00000296-AMERK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CLACL_00000296 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_CLACL_00000296 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_CLACL_00000296 INTO WA_CLACL_00000296.


*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 AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CLACL_00000296-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CLACL_00000296-AENNR.
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_CLACL_00000296_STR, 
MSGFN TYPE STRING,
ATNAM TYPE STRING,
POSNR TYPE STRING,
ABTEI TYPE STRING,
DINKB TYPE STRING,
HERKU TYPE STRING,
RELEV TYPE STRING,
DATUV TYPE STRING,
AENNR TYPE STRING,
LKENZ TYPE STRING,
AMERK TYPE STRING,
MKENN TYPE STRING,
E1CABXM TYPE STRING,
MSGFN TYPE STRING,
ATNAM TYPE STRING,
ATIDN TYPE STRING,
ATERF TYPE STRING,
ATGLO TYPE STRING,
ATINT TYPE STRING,
ATSON TYPE STRING,
ATWRD TYPE STRING,
ATFOD TYPE STRING,
ATVSC TYPE STRING,
DOKNR TYPE STRING,
DOKAR TYPE STRING,
DOKTL TYPE STRING,
DOKVR TYPE STRING,
ANAME TYPE STRING,
ADATU TYPE STRING,
VNAME TYPE STRING,
DATUV TYPE STRING,
AENNR TYPE STRING,
LKENZ TYPE STRING,
ATINP TYPE STRING,
ATVIE TYPE STRING,
ATHKA TYPE STRING,
ATHKO TYPE STRING,
ATTOL TYPE STRING,
ATZUS TYPE STRING,
E1CUKBM TYPE STRING,
E1CAWNM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CLACL_00000296_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_CLACL_00000296_STR-MSGFN sy-vline 
WA_CLACL_00000296_STR-ATNAM sy-vline 
WA_CLACL_00000296_STR-POSNR sy-vline 
WA_CLACL_00000296_STR-ABTEI sy-vline 
WA_CLACL_00000296_STR-DINKB sy-vline 
WA_CLACL_00000296_STR-HERKU sy-vline 
WA_CLACL_00000296_STR-RELEV sy-vline 
WA_CLACL_00000296_STR-DATUV sy-vline 
WA_CLACL_00000296_STR-AENNR sy-vline 
WA_CLACL_00000296_STR-LKENZ sy-vline 
WA_CLACL_00000296_STR-AMERK sy-vline 
WA_CLACL_00000296_STR-MKENN sy-vline 
WA_CLACL_00000296_STR-E1CABXM sy-vline 
WA_CLACL_00000296_STR-MSGFN sy-vline 
WA_CLACL_00000296_STR-ATNAM sy-vline 
WA_CLACL_00000296_STR-ATIDN sy-vline 
WA_CLACL_00000296_STR-ATERF sy-vline 
WA_CLACL_00000296_STR-ATGLO sy-vline 
WA_CLACL_00000296_STR-ATINT sy-vline 
WA_CLACL_00000296_STR-ATSON sy-vline 
WA_CLACL_00000296_STR-ATWRD sy-vline 
WA_CLACL_00000296_STR-ATFOD sy-vline 
WA_CLACL_00000296_STR-ATVSC sy-vline 
WA_CLACL_00000296_STR-DOKNR sy-vline 
WA_CLACL_00000296_STR-DOKAR sy-vline 
WA_CLACL_00000296_STR-DOKTL sy-vline 
WA_CLACL_00000296_STR-DOKVR sy-vline 
WA_CLACL_00000296_STR-ANAME sy-vline 
WA_CLACL_00000296_STR-ADATU sy-vline 
WA_CLACL_00000296_STR-VNAME sy-vline 
WA_CLACL_00000296_STR-DATUV sy-vline 
WA_CLACL_00000296_STR-AENNR sy-vline 
WA_CLACL_00000296_STR-LKENZ sy-vline 
WA_CLACL_00000296_STR-ATINP sy-vline 
WA_CLACL_00000296_STR-ATVIE sy-vline 
WA_CLACL_00000296_STR-ATHKA sy-vline 
WA_CLACL_00000296_STR-ATHKO sy-vline 
WA_CLACL_00000296_STR-ATTOL sy-vline 
WA_CLACL_00000296_STR-ATZUS sy-vline 
WA_CLACL_00000296_STR-E1CUKBM sy-vline 
WA_CLACL_00000296_STR-E1CAWNM sy-vline      INTO ld_text SEPARATED BY SPACE.

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