ABAP Select data from SAP table CLACL_00002699 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CLACL_00002699 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_00002699. 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_00002699 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_00002699 TYPE STANDARD TABLE OF CLACL_00002699,
      WA_CLACL_00002699 TYPE CLACL_00002699,
      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_00002699> TYPE CLACL_00002699.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CLACL_00002699.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CLACL_00002699
  INTO TABLE IT_CLACL_00002699.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CLACL_00002699
*  INTO TABLE @DATA(IT_CLACL_000026992).
*--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_00002699 INDEX 1 INTO DATA(WA_CLACL_000026992).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CLACL_00002699 ASSIGNING <CLACL_00002699>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CLACL_00002699>-MSGFN = 1.
<CLACL_00002699>-ATNAM = 1.
<CLACL_00002699>-ATIDN = 1.
<CLACL_00002699>-ATFOR = 1.
<CLACL_00002699>-ANZST = 1.

ENDLOOP.

LOOP AT IT_CLACL_00002699 INTO WA_CLACL_00002699.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CLACL_00002699-ANZDZ, sy-vline,
  WA_CLACL_00002699-ATVOR, sy-vline,
  WA_CLACL_00002699-ATSCH, sy-vline,
  WA_CLACL_00002699-ATKLE, sy-vline,
  WA_CLACL_00002699-ATKON, sy-vline,
  WA_CLACL_00002699-ATKLA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CLACL_00002699 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_00002699 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_00002699 INTO WA_CLACL_00002699.


*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_00002699-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CLACL_00002699-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_00002699_STR, 
MSGFN TYPE STRING,
ATNAM TYPE STRING,
ATIDN TYPE STRING,
ATFOR TYPE STRING,
ANZST TYPE STRING,
ANZDZ TYPE STRING,
ATVOR TYPE STRING,
ATSCH TYPE STRING,
ATKLE TYPE STRING,
ATKON TYPE STRING,
ATKLA TYPE STRING,
ATERF TYPE STRING,
ATEIN TYPE STRING,
MSEHI TYPE STRING,
ATDIM TYPE STRING,
ATGLO TYPE STRING,
ATGLA TYPE STRING,
ATINT TYPE STRING,
ATSON TYPE STRING,
ATTAB TYPE STRING,
ATFEL TYPE STRING,
ATWRD TYPE STRING,
ATFOD TYPE STRING,
ATHIE TYPE STRING,
ATDEX TYPE STRING,
ATFGA TYPE STRING,
ATVSC TYPE STRING,
ANAME TYPE STRING,
ADATU TYPE STRING,
VNAME TYPE STRING,
VDATU TYPE STRING,
ATXAC TYPE STRING,
ATMST TYPE STRING,
DATUV TYPE STRING,
AENNR TYPE STRING,
LKENZ TYPE STRING,
ATINP TYPE STRING,
ATVIE TYPE STRING,
ATHKA TYPE STRING,
ATHKO TYPE STRING,
CLASS TYPE STRING,
ATTOL TYPE STRING,
ATZUS TYPE STRING,
CHECK_TABLE TYPE STRING,
FUNCTION TYPE STRING,
PLANT TYPE STRING,
SELECTION_SET TYPE STRING,
ADT_CLASS TYPE STRING,
ADT_KLART TYPE STRING,
AGGREGATING TYPE STRING,
BALANCING TYPE STRING,
INPUT_REQ_CONF TYPE STRING,
REF_TABLE TYPE STRING,
REF_FIELD TYPE STRING,
AUTHORITY_GROUP TYPE STRING,
ATSCH_LONG TYPE STRING,
E1CUKBM TYPE STRING,
E1CABTM TYPE STRING,
E1TEXTL TYPE STRING,
E1CAWNM TYPE STRING,
E1TCMEM TYPE STRING,
E1CABZM TYPE STRING,
E1DATEM TYPE STRING,
MSGFN TYPE STRING,
KEY_DATE TYPE STRING,
AENNR TYPE STRING,
EFFECTIVITY TYPE STRING,
E1RTVALUEHEAD TYPE STRING,
MSGFN TYPE STRING,
CHARTYP TYPE STRING,
CHECKOPT TYPE STRING,
E1RTVALUE TYPE STRING,
E1RTHIERNODEID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CLACL_00002699_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_00002699_STR-MSGFN sy-vline 
WA_CLACL_00002699_STR-ATNAM sy-vline 
WA_CLACL_00002699_STR-ATIDN sy-vline 
WA_CLACL_00002699_STR-ATFOR sy-vline 
WA_CLACL_00002699_STR-ANZST sy-vline 
WA_CLACL_00002699_STR-ANZDZ sy-vline 
WA_CLACL_00002699_STR-ATVOR sy-vline 
WA_CLACL_00002699_STR-ATSCH sy-vline 
WA_CLACL_00002699_STR-ATKLE sy-vline 
WA_CLACL_00002699_STR-ATKON sy-vline 
WA_CLACL_00002699_STR-ATKLA sy-vline 
WA_CLACL_00002699_STR-ATERF sy-vline 
WA_CLACL_00002699_STR-ATEIN sy-vline 
WA_CLACL_00002699_STR-MSEHI sy-vline 
WA_CLACL_00002699_STR-ATDIM sy-vline 
WA_CLACL_00002699_STR-ATGLO sy-vline 
WA_CLACL_00002699_STR-ATGLA sy-vline 
WA_CLACL_00002699_STR-ATINT sy-vline 
WA_CLACL_00002699_STR-ATSON sy-vline 
WA_CLACL_00002699_STR-ATTAB sy-vline 
WA_CLACL_00002699_STR-ATFEL sy-vline 
WA_CLACL_00002699_STR-ATWRD sy-vline 
WA_CLACL_00002699_STR-ATFOD sy-vline 
WA_CLACL_00002699_STR-ATHIE sy-vline 
WA_CLACL_00002699_STR-ATDEX sy-vline 
WA_CLACL_00002699_STR-ATFGA sy-vline 
WA_CLACL_00002699_STR-ATVSC sy-vline 
WA_CLACL_00002699_STR-ANAME sy-vline 
WA_CLACL_00002699_STR-ADATU sy-vline 
WA_CLACL_00002699_STR-VNAME sy-vline 
WA_CLACL_00002699_STR-VDATU sy-vline 
WA_CLACL_00002699_STR-ATXAC sy-vline 
WA_CLACL_00002699_STR-ATMST sy-vline 
WA_CLACL_00002699_STR-DATUV sy-vline 
WA_CLACL_00002699_STR-AENNR sy-vline 
WA_CLACL_00002699_STR-LKENZ sy-vline 
WA_CLACL_00002699_STR-ATINP sy-vline 
WA_CLACL_00002699_STR-ATVIE sy-vline 
WA_CLACL_00002699_STR-ATHKA sy-vline 
WA_CLACL_00002699_STR-ATHKO sy-vline 
WA_CLACL_00002699_STR-CLASS sy-vline 
WA_CLACL_00002699_STR-ATTOL sy-vline 
WA_CLACL_00002699_STR-ATZUS sy-vline 
WA_CLACL_00002699_STR-CHECK_TABLE sy-vline 
WA_CLACL_00002699_STR-FUNCTION sy-vline 
WA_CLACL_00002699_STR-PLANT sy-vline 
WA_CLACL_00002699_STR-SELECTION_SET sy-vline 
WA_CLACL_00002699_STR-ADT_CLASS sy-vline 
WA_CLACL_00002699_STR-ADT_KLART sy-vline 
WA_CLACL_00002699_STR-AGGREGATING sy-vline 
WA_CLACL_00002699_STR-BALANCING sy-vline 
WA_CLACL_00002699_STR-INPUT_REQ_CONF sy-vline 
WA_CLACL_00002699_STR-REF_TABLE sy-vline 
WA_CLACL_00002699_STR-REF_FIELD sy-vline 
WA_CLACL_00002699_STR-AUTHORITY_GROUP sy-vline 
WA_CLACL_00002699_STR-ATSCH_LONG sy-vline 
WA_CLACL_00002699_STR-E1CUKBM sy-vline 
WA_CLACL_00002699_STR-E1CABTM sy-vline 
WA_CLACL_00002699_STR-E1TEXTL sy-vline 
WA_CLACL_00002699_STR-E1CAWNM sy-vline 
WA_CLACL_00002699_STR-E1TCMEM sy-vline 
WA_CLACL_00002699_STR-E1CABZM sy-vline 
WA_CLACL_00002699_STR-E1DATEM sy-vline 
WA_CLACL_00002699_STR-MSGFN sy-vline 
WA_CLACL_00002699_STR-KEY_DATE sy-vline 
WA_CLACL_00002699_STR-AENNR sy-vline 
WA_CLACL_00002699_STR-EFFECTIVITY sy-vline 
WA_CLACL_00002699_STR-E1RTVALUEHEAD sy-vline 
WA_CLACL_00002699_STR-MSGFN sy-vline 
WA_CLACL_00002699_STR-CHARTYP sy-vline 
WA_CLACL_00002699_STR-CHECKOPT sy-vline 
WA_CLACL_00002699_STR-E1RTVALUE sy-vline 
WA_CLACL_00002699_STR-E1RTHIERNODEID sy-vline      INTO ld_text SEPARATED BY SPACE.

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