ABAP Select data from SAP table CLACL_00000309 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CLACL_00000309 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_00000309. 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_00000309 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_00000309 TYPE STANDARD TABLE OF CLACL_00000309,
      WA_CLACL_00000309 TYPE CLACL_00000309,
      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_00000309> TYPE CLACL_00000309.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CLACL_00000309.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CLACL_00000309
  INTO TABLE IT_CLACL_00000309.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CLACL_00000309
*  INTO TABLE @DATA(IT_CLACL_000003092).
*--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_00000309 INDEX 1 INTO DATA(WA_CLACL_000003092).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CLACL_00000309 ASSIGNING <CLACL_00000309>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CLACL_00000309>-MSGFN = 1.
<CLACL_00000309>-KLART = 1.
<CLACL_00000309>-CLASS = 1.
<CLACL_00000309>-STATU = 1.
<CLACL_00000309>-KLAGR = 1.

ENDLOOP.

LOOP AT IT_CLACL_00000309 INTO WA_CLACL_00000309.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CLACL_00000309-BGRSE, sy-vline,
  WA_CLACL_00000309-BGRKL, sy-vline,
  WA_CLACL_00000309-BGRKP, sy-vline,
  WA_CLACL_00000309-ANAME, sy-vline,
  WA_CLACL_00000309-ADATU, sy-vline,
  WA_CLACL_00000309-VNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CLACL_00000309 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_00000309 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_00000309 INTO WA_CLACL_00000309.


*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 DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CLACL_00000309-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CLACL_00000309-DOKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CLACL_00000309-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CLACL_00000309-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_00000309_STR, 
MSGFN TYPE STRING,
KLART TYPE STRING,
CLASS TYPE STRING,
STATU TYPE STRING,
KLAGR TYPE STRING,
BGRSE TYPE STRING,
BGRKL TYPE STRING,
BGRKP TYPE STRING,
ANAME TYPE STRING,
ADATU TYPE STRING,
VNAME TYPE STRING,
VDATU TYPE STRING,
VONDT TYPE STRING,
BISDT TYPE STRING,
PRAUS TYPE STRING,
SICHT TYPE STRING,
DOKNR TYPE STRING,
DOKAR TYPE STRING,
DOKTL TYPE STRING,
DOKVR TYPE STRING,
DINKZ TYPE STRING,
NNORM TYPE STRING,
NORMN TYPE STRING,
NORMB TYPE STRING,
NRMT1 TYPE STRING,
NRMT2 TYPE STRING,
AUSGD TYPE STRING,
VERSD TYPE STRING,
VERSI TYPE STRING,
LEIST TYPE STRING,
VERWE TYPE STRING,
SPART TYPE STRING,
WWSKZ TYPE STRING,
WWSSI TYPE STRING,
POTPR TYPE STRING,
CLOBK TYPE STRING,
CLMUL TYPE STRING,
CVIEW TYPE STRING,
DISST TYPE STRING,
MEINS TYPE STRING,
CLMOD TYPE STRING,
VWSTL TYPE STRING,
VWPLA TYPE STRING,
CLALT TYPE STRING,
LOCLA TYPE STRING,
KATALOG TYPE STRING,
E1KLATM TYPE STRING,
E1KSMLM TYPE STRING,
E1SWORM TYPE STRING,
E1CUKB3 TYPE STRING,
E1DATEM TYPE STRING,
MSGFN TYPE STRING,
KEY_DATE TYPE STRING,
AENNR TYPE STRING,
EFFECTIVITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CLACL_00000309_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_00000309_STR-MSGFN sy-vline 
WA_CLACL_00000309_STR-KLART sy-vline 
WA_CLACL_00000309_STR-CLASS sy-vline 
WA_CLACL_00000309_STR-STATU sy-vline 
WA_CLACL_00000309_STR-KLAGR sy-vline 
WA_CLACL_00000309_STR-BGRSE sy-vline 
WA_CLACL_00000309_STR-BGRKL sy-vline 
WA_CLACL_00000309_STR-BGRKP sy-vline 
WA_CLACL_00000309_STR-ANAME sy-vline 
WA_CLACL_00000309_STR-ADATU sy-vline 
WA_CLACL_00000309_STR-VNAME sy-vline 
WA_CLACL_00000309_STR-VDATU sy-vline 
WA_CLACL_00000309_STR-VONDT sy-vline 
WA_CLACL_00000309_STR-BISDT sy-vline 
WA_CLACL_00000309_STR-PRAUS sy-vline 
WA_CLACL_00000309_STR-SICHT sy-vline 
WA_CLACL_00000309_STR-DOKNR sy-vline 
WA_CLACL_00000309_STR-DOKAR sy-vline 
WA_CLACL_00000309_STR-DOKTL sy-vline 
WA_CLACL_00000309_STR-DOKVR sy-vline 
WA_CLACL_00000309_STR-DINKZ sy-vline 
WA_CLACL_00000309_STR-NNORM sy-vline 
WA_CLACL_00000309_STR-NORMN sy-vline 
WA_CLACL_00000309_STR-NORMB sy-vline 
WA_CLACL_00000309_STR-NRMT1 sy-vline 
WA_CLACL_00000309_STR-NRMT2 sy-vline 
WA_CLACL_00000309_STR-AUSGD sy-vline 
WA_CLACL_00000309_STR-VERSD sy-vline 
WA_CLACL_00000309_STR-VERSI sy-vline 
WA_CLACL_00000309_STR-LEIST sy-vline 
WA_CLACL_00000309_STR-VERWE sy-vline 
WA_CLACL_00000309_STR-SPART sy-vline 
WA_CLACL_00000309_STR-WWSKZ sy-vline 
WA_CLACL_00000309_STR-WWSSI sy-vline 
WA_CLACL_00000309_STR-POTPR sy-vline 
WA_CLACL_00000309_STR-CLOBK sy-vline 
WA_CLACL_00000309_STR-CLMUL sy-vline 
WA_CLACL_00000309_STR-CVIEW sy-vline 
WA_CLACL_00000309_STR-DISST sy-vline 
WA_CLACL_00000309_STR-MEINS sy-vline 
WA_CLACL_00000309_STR-CLMOD sy-vline 
WA_CLACL_00000309_STR-VWSTL sy-vline 
WA_CLACL_00000309_STR-VWPLA sy-vline 
WA_CLACL_00000309_STR-CLALT sy-vline 
WA_CLACL_00000309_STR-LOCLA sy-vline 
WA_CLACL_00000309_STR-KATALOG sy-vline 
WA_CLACL_00000309_STR-E1KLATM sy-vline 
WA_CLACL_00000309_STR-E1KSMLM sy-vline 
WA_CLACL_00000309_STR-E1SWORM sy-vline 
WA_CLACL_00000309_STR-E1CUKB3 sy-vline 
WA_CLACL_00000309_STR-E1DATEM sy-vline 
WA_CLACL_00000309_STR-MSGFN sy-vline 
WA_CLACL_00000309_STR-KEY_DATE sy-vline 
WA_CLACL_00000309_STR-AENNR sy-vline 
WA_CLACL_00000309_STR-EFFECTIVITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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