ABAP Select data from SAP table DCTTACTRS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DCTTACTRS
*  INTO TABLE @DATA(IT_DCTTACTRS2).
*--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_DCTTACTRS INDEX 1 INTO DATA(WA_DCTTACTRS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DCTTACTRS>-NAME = 1.
<DCTTACTRS>-STATE = 1.
<DCTTACTRS>-ACT_RESULT = 1.
<DCTTACTRS>-CNV_RESULT = 1.
<DCTTACTRS>-AS4DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DCTTACTRS-AS4TIME, sy-vline,
  WA_DCTTACTRS-SETTMST, sy-vline,
  WA_DCTTACTRS-BUFFER, sy-vline,
  WA_DCTTACTRS-CLUSTBUFF, sy-vline,
  WA_DCTTACTRS-BUFALLOW, sy-vline,
  WA_DCTTACTRS-EXCAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DCTTACTRS 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_DCTTACTRS 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_DCTTACTRS INTO WA_DCTTACTRS.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_DCTTACTRS_STR, 
NAME TYPE STRING,
STATE TYPE STRING,
ACT_RESULT TYPE STRING,
CNV_RESULT TYPE STRING,
AS4DATE TYPE STRING,
AS4TIME TYPE STRING,
SETTMST TYPE STRING,
BUFFER TYPE STRING,
CLUSTBUFF TYPE STRING,
BUFALLOW TYPE STRING,
EXCAT TYPE STRING,
EXCLASS TYPE STRING,
EXSTORAGE TYPE STRING,
DELTESETT TYPE STRING,
EXTESETT TYPE STRING,
VALUE TYPE STRING,
CATVAL TYPE STRING,
CLASSVAL TYPE STRING,
BUFFERVAL TYPE STRING,
BUFALWVAL TYPE STRING,
LOGWRVAL TYPE STRING,
TRANSLVAL TYPE STRING,
TRANSPVAL TYPE STRING,
RCSTOREVAL TYPE STRING,
SHARINGTYPEVAL TYPE STRING,
VIEWBUFF TYPE STRING,
JAVAONLY TYPE STRING,
TYPESROWST TYPE STRING,
INVHASH_STORETYPE TYPE STRING,
LOAD_UNIT TYPE STRING,
EXTBAVERS TYPE STRING,
GENBUFFER TYPE STRING,
GENKEYLG TYPE STRING,
LOGWRITE TYPE STRING,
KEYLGBUFF TYPE STRING,
KEYTPBUFF TYPE STRING,
EXTBNVERS TYPE STRING,
CNVALLOW TYPE STRING,
TABLCHK TYPE STRING,
TABLACT TYPE STRING,
TRANSPFLG TYPE STRING,
KEY_EXISTT TYPE STRING,
KEY_NUMBT TYPE STRING,
KEY_CONT TYPE STRING,
KEY_BEGINT TYPE STRING,
KEY_LENT TYPE STRING,
KEY_TRANST TYPE STRING,
TABLENGTHT TYPE STRING,
FLDCNTMAXT TYPE STRING,
TRANSLATE TYPE STRING,
DELTRANSL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DCTTACTRS_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_DCTTACTRS_STR-NAME sy-vline 
WA_DCTTACTRS_STR-STATE sy-vline 
WA_DCTTACTRS_STR-ACT_RESULT sy-vline 
WA_DCTTACTRS_STR-CNV_RESULT sy-vline 
WA_DCTTACTRS_STR-AS4DATE sy-vline 
WA_DCTTACTRS_STR-AS4TIME sy-vline 
WA_DCTTACTRS_STR-SETTMST sy-vline 
WA_DCTTACTRS_STR-BUFFER sy-vline 
WA_DCTTACTRS_STR-CLUSTBUFF sy-vline 
WA_DCTTACTRS_STR-BUFALLOW sy-vline 
WA_DCTTACTRS_STR-EXCAT sy-vline 
WA_DCTTACTRS_STR-EXCLASS sy-vline 
WA_DCTTACTRS_STR-EXSTORAGE sy-vline 
WA_DCTTACTRS_STR-DELTESETT sy-vline 
WA_DCTTACTRS_STR-EXTESETT sy-vline 
WA_DCTTACTRS_STR-VALUE sy-vline 
WA_DCTTACTRS_STR-CATVAL sy-vline 
WA_DCTTACTRS_STR-CLASSVAL sy-vline 
WA_DCTTACTRS_STR-BUFFERVAL sy-vline 
WA_DCTTACTRS_STR-BUFALWVAL sy-vline 
WA_DCTTACTRS_STR-LOGWRVAL sy-vline 
WA_DCTTACTRS_STR-TRANSLVAL sy-vline 
WA_DCTTACTRS_STR-TRANSPVAL sy-vline 
WA_DCTTACTRS_STR-RCSTOREVAL sy-vline 
WA_DCTTACTRS_STR-SHARINGTYPEVAL sy-vline 
WA_DCTTACTRS_STR-VIEWBUFF sy-vline 
WA_DCTTACTRS_STR-JAVAONLY sy-vline 
WA_DCTTACTRS_STR-TYPESROWST sy-vline 
WA_DCTTACTRS_STR-INVHASH_STORETYPE sy-vline 
WA_DCTTACTRS_STR-LOAD_UNIT sy-vline 
WA_DCTTACTRS_STR-EXTBAVERS sy-vline 
WA_DCTTACTRS_STR-GENBUFFER sy-vline 
WA_DCTTACTRS_STR-GENKEYLG sy-vline 
WA_DCTTACTRS_STR-LOGWRITE sy-vline 
WA_DCTTACTRS_STR-KEYLGBUFF sy-vline 
WA_DCTTACTRS_STR-KEYTPBUFF sy-vline 
WA_DCTTACTRS_STR-EXTBNVERS sy-vline 
WA_DCTTACTRS_STR-CNVALLOW sy-vline 
WA_DCTTACTRS_STR-TABLCHK sy-vline 
WA_DCTTACTRS_STR-TABLACT sy-vline 
WA_DCTTACTRS_STR-TRANSPFLG sy-vline 
WA_DCTTACTRS_STR-KEY_EXISTT sy-vline 
WA_DCTTACTRS_STR-KEY_NUMBT sy-vline 
WA_DCTTACTRS_STR-KEY_CONT sy-vline 
WA_DCTTACTRS_STR-KEY_BEGINT sy-vline 
WA_DCTTACTRS_STR-KEY_LENT sy-vline 
WA_DCTTACTRS_STR-KEY_TRANST sy-vline 
WA_DCTTACTRS_STR-TABLENGTHT sy-vline 
WA_DCTTACTRS_STR-FLDCNTMAXT sy-vline 
WA_DCTTACTRS_STR-TRANSLATE sy-vline 
WA_DCTTACTRS_STR-DELTRANSL sy-vline      INTO ld_text SEPARATED BY SPACE.

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