ABAP Select data from SAP table DCTTYPACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DCTTYPACT
*  INTO TABLE @DATA(IT_DCTTYPACT2).
*--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_DCTTYPACT INDEX 1 INTO DATA(WA_DCTTYPACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DCTTYPACT>-ACT_MODE = 1.
<DCTTYPACT>-ACT_ALIAS = 1.
<DCTTYPACT>-TTYP = 1.
<DCTTYPACT>-TTHD = 1.
<DCTTYPACT>-TTKF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DCTTYPACT-ROWTYPEGET, sy-vline,
  WA_DCTTYPACT-DEPSGET, sy-vline,
  WA_DCTTYPACT-TTYPPUT, sy-vline,
  WA_DCTTYPACT-NTABGEN, sy-vline,
  WA_DCTTYPACT-NTABCMP, sy-vline,
  WA_DCTTYPACT-SETTMST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DCTTYPACT 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_DCTTYPACT 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_DCTTYPACT INTO WA_DCTTYPACT.


*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_DCTTYPACT_STR, 
ACT_MODE TYPE STRING,
ACT_ALIAS TYPE STRING,
TTYP TYPE STRING,
TTHD TYPE STRING,
TTKF TYPE STRING,
ROWTYPEGET TYPE STRING,
DEPSGET TYPE STRING,
TTYPPUT TYPE STRING,
NTABGEN TYPE STRING,
NTABCMP TYPE STRING,
SETTMST TYPE STRING,
NTABSTATE TYPE STRING,
DO_COMMIT TYPE STRING,
DO_CHECK TYPE STRING,
CHK_ID TYPE STRING,
DO_ERRACTF TYPE STRING,
DO_DEPS TYPE STRING,
SEND_START TYPE STRING,
SEND_USER TYPE STRING,
STARTARBGB TYPE STRING,
STARTMSGNR TYPE STRING,
SEND_SUCC TYPE STRING,
SEND_FAIL TYPE STRING,
SUCCARBGB TYPE STRING,
SUCCMSGNR TYPE STRING,
FAILARBGB TYPE STRING,
FAILMSGNR TYPE STRING,
ASTATARBGB TYPE STRING,
ASTATMSGNR TYPE STRING,
DEPACTION TYPE STRING,
FORCE_ACT TYPE STRING,
SENDDEPACT TYPE STRING,
SENDCHANGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DCTTYPACT_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_DCTTYPACT_STR-ACT_MODE sy-vline 
WA_DCTTYPACT_STR-ACT_ALIAS sy-vline 
WA_DCTTYPACT_STR-TTYP sy-vline 
WA_DCTTYPACT_STR-TTHD sy-vline 
WA_DCTTYPACT_STR-TTKF sy-vline 
WA_DCTTYPACT_STR-ROWTYPEGET sy-vline 
WA_DCTTYPACT_STR-DEPSGET sy-vline 
WA_DCTTYPACT_STR-TTYPPUT sy-vline 
WA_DCTTYPACT_STR-NTABGEN sy-vline 
WA_DCTTYPACT_STR-NTABCMP sy-vline 
WA_DCTTYPACT_STR-SETTMST sy-vline 
WA_DCTTYPACT_STR-NTABSTATE sy-vline 
WA_DCTTYPACT_STR-DO_COMMIT sy-vline 
WA_DCTTYPACT_STR-DO_CHECK sy-vline 
WA_DCTTYPACT_STR-CHK_ID sy-vline 
WA_DCTTYPACT_STR-DO_ERRACTF sy-vline 
WA_DCTTYPACT_STR-DO_DEPS sy-vline 
WA_DCTTYPACT_STR-SEND_START sy-vline 
WA_DCTTYPACT_STR-SEND_USER sy-vline 
WA_DCTTYPACT_STR-STARTARBGB sy-vline 
WA_DCTTYPACT_STR-STARTMSGNR sy-vline 
WA_DCTTYPACT_STR-SEND_SUCC sy-vline 
WA_DCTTYPACT_STR-SEND_FAIL sy-vline 
WA_DCTTYPACT_STR-SUCCARBGB sy-vline 
WA_DCTTYPACT_STR-SUCCMSGNR sy-vline 
WA_DCTTYPACT_STR-FAILARBGB sy-vline 
WA_DCTTYPACT_STR-FAILMSGNR sy-vline 
WA_DCTTYPACT_STR-ASTATARBGB sy-vline 
WA_DCTTYPACT_STR-ASTATMSGNR sy-vline 
WA_DCTTYPACT_STR-DEPACTION sy-vline 
WA_DCTTYPACT_STR-FORCE_ACT sy-vline 
WA_DCTTYPACT_STR-SENDDEPACT sy-vline 
WA_DCTTYPACT_STR-SENDCHANGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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