ABAP Select data from SAP table DCTABLACTE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DCTABLACTE
*  INTO TABLE @DATA(IT_DCTABLACTE2).
*--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_DCTABLACTE INDEX 1 INTO DATA(WA_DCTABLACTE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DCTABLACTE>-MODUS = 1.
<DCTABLACTE>-TABCLASS = 1.
<DCTABLACTE>-AS4LOCAL = 1.
<DCTABLACTE>-SETLEVELE = 1.
<DCTABLACTE>-ACTOKE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DCTABLACTE-LOCKACTE, sy-vline,
  WA_DCTABLACTE-TABLGETE, sy-vline,
  WA_DCTABLACTE-ANLVERE, sy-vline,
  WA_DCTABLACTE-SQLTGETE, sy-vline,
  WA_DCTABLACTE-EXPANDE, sy-vline,
  WA_DCTABLACTE-PREPAREE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DCTABLACTE 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_DCTABLACTE 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_DCTABLACTE INTO WA_DCTABLACTE.


*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_DCTABLACTE_STR, 
MODUS TYPE STRING,
TABCLASS TYPE STRING,
AS4LOCAL TYPE STRING,
SETLEVELE TYPE STRING,
ACTOKE TYPE STRING,
LOCKACTE TYPE STRING,
TABLGETE TYPE STRING,
ANLVERE TYPE STRING,
SQLTGETE TYPE STRING,
EXPANDE TYPE STRING,
PREPAREE TYPE STRING,
TABLCHKE TYPE STRING,
TBHDCHKE TYPE STRING,
TBIXCHKE TYPE STRING,
TABTCHKE TYPE STRING,
TBDEPCHKE TYPE STRING,
TBSHCHKE TYPE STRING,
TBVICHKE TYPE STRING,
SHDEPCHKE TYPE STRING,
NTABCMPE TYPE STRING,
ANLRESE TYPE STRING,
SETTMSTE TYPE STRING,
TABLPUTE TYPE STRING,
PUTCTRLE TYPE STRING,
PUTSTATEE TYPE STRING,
NTABSTATEE TYPE STRING,
DB_AUTHE TYPE STRING,
EXCOMMITE TYPE STRING,
DEPTABSE TYPE STRING,
REFPROTE TYPE STRING,
TIMER_ONE TYPE STRING,
MULTIPLEXE TYPE STRING,
UPGRMODEE TYPE STRING,
TBCHGCMPE TYPE STRING,
TBVIACTE TYPE STRING,
SHDEPACTE TYPE STRING,
ENDEPACTE TYPE STRING,
REFCHKE TYPE STRING,
OFFSCLCNVE TYPE STRING,
PRELEVELE TYPE STRING,
LUSER TYPE STRING,
LDATE TYPE STRING,
LTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DCTABLACTE_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_DCTABLACTE_STR-MODUS sy-vline 
WA_DCTABLACTE_STR-TABCLASS sy-vline 
WA_DCTABLACTE_STR-AS4LOCAL sy-vline 
WA_DCTABLACTE_STR-SETLEVELE sy-vline 
WA_DCTABLACTE_STR-ACTOKE sy-vline 
WA_DCTABLACTE_STR-LOCKACTE sy-vline 
WA_DCTABLACTE_STR-TABLGETE sy-vline 
WA_DCTABLACTE_STR-ANLVERE sy-vline 
WA_DCTABLACTE_STR-SQLTGETE sy-vline 
WA_DCTABLACTE_STR-EXPANDE sy-vline 
WA_DCTABLACTE_STR-PREPAREE sy-vline 
WA_DCTABLACTE_STR-TABLCHKE sy-vline 
WA_DCTABLACTE_STR-TBHDCHKE sy-vline 
WA_DCTABLACTE_STR-TBIXCHKE sy-vline 
WA_DCTABLACTE_STR-TABTCHKE sy-vline 
WA_DCTABLACTE_STR-TBDEPCHKE sy-vline 
WA_DCTABLACTE_STR-TBSHCHKE sy-vline 
WA_DCTABLACTE_STR-TBVICHKE sy-vline 
WA_DCTABLACTE_STR-SHDEPCHKE sy-vline 
WA_DCTABLACTE_STR-NTABCMPE sy-vline 
WA_DCTABLACTE_STR-ANLRESE sy-vline 
WA_DCTABLACTE_STR-SETTMSTE sy-vline 
WA_DCTABLACTE_STR-TABLPUTE sy-vline 
WA_DCTABLACTE_STR-PUTCTRLE sy-vline 
WA_DCTABLACTE_STR-PUTSTATEE sy-vline 
WA_DCTABLACTE_STR-NTABSTATEE sy-vline 
WA_DCTABLACTE_STR-DB_AUTHE sy-vline 
WA_DCTABLACTE_STR-EXCOMMITE sy-vline 
WA_DCTABLACTE_STR-DEPTABSE sy-vline 
WA_DCTABLACTE_STR-REFPROTE sy-vline 
WA_DCTABLACTE_STR-TIMER_ONE sy-vline 
WA_DCTABLACTE_STR-MULTIPLEXE sy-vline 
WA_DCTABLACTE_STR-UPGRMODEE sy-vline 
WA_DCTABLACTE_STR-TBCHGCMPE sy-vline 
WA_DCTABLACTE_STR-TBVIACTE sy-vline 
WA_DCTABLACTE_STR-SHDEPACTE sy-vline 
WA_DCTABLACTE_STR-ENDEPACTE sy-vline 
WA_DCTABLACTE_STR-REFCHKE sy-vline 
WA_DCTABLACTE_STR-OFFSCLCNVE sy-vline 
WA_DCTABLACTE_STR-PRELEVELE sy-vline 
WA_DCTABLACTE_STR-LUSER sy-vline 
WA_DCTABLACTE_STR-LDATE sy-vline 
WA_DCTABLACTE_STR-LTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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