ABAP Select data from SAP table VEC_S_TASK_TYPE_TR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VEC_S_TASK_TYPE_TR
*  INTO TABLE @DATA(IT_VEC_S_TASK_TYPE_TR2).
*--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_VEC_S_TASK_TYPE_TR INDEX 1 INTO DATA(WA_VEC_S_TASK_TYPE_TR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VEC_S_TASK_TYPE_TR>-SCEN_ID = 1.
<VEC_S_TASK_TYPE_TR>-TASK_TYPE = 1.
<VEC_S_TASK_TYPE_TR>-RUN_REPORT = 1.
<VEC_S_TASK_TYPE_TR>-ENTITY_CDS = 1.
<VEC_S_TASK_TYPE_TR>-ENTITY_FIELD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VEC_S_TASK_TYPE_TR-ENTITY_COMPOUND_FIELD, sy-vline,
  WA_VEC_S_TASK_TYPE_TR-REF_TABLE, sy-vline,
  WA_VEC_S_TASK_TYPE_TR-REF_FIELD, sy-vline,
  WA_VEC_S_TASK_TYPE_TR-LANGU, sy-vline,
  WA_VEC_S_TASK_TYPE_TR-DESCR, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_VEC_S_TASK_TYPE_TR 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_VEC_S_TASK_TYPE_TR 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_VEC_S_TASK_TYPE_TR INTO WA_VEC_S_TASK_TYPE_TR.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_VEC_S_TASK_TYPE_TR-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VEC_S_TASK_TYPE_TR-LANGU.
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_VEC_S_TASK_TYPE_TR_STR, 
SCEN_ID TYPE STRING,
TASK_TYPE TYPE STRING,
RUN_REPORT TYPE STRING,
ENTITY_CDS TYPE STRING,
ENTITY_FIELD TYPE STRING,
ENTITY_COMPOUND_FIELD TYPE STRING,
REF_TABLE TYPE STRING,
REF_FIELD TYPE STRING,
LANGU TYPE STRING,
DESCR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VEC_S_TASK_TYPE_TR_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_VEC_S_TASK_TYPE_TR_STR-SCEN_ID sy-vline 
WA_VEC_S_TASK_TYPE_TR_STR-TASK_TYPE sy-vline 
WA_VEC_S_TASK_TYPE_TR_STR-RUN_REPORT sy-vline 
WA_VEC_S_TASK_TYPE_TR_STR-ENTITY_CDS sy-vline 
WA_VEC_S_TASK_TYPE_TR_STR-ENTITY_FIELD sy-vline 
WA_VEC_S_TASK_TYPE_TR_STR-ENTITY_COMPOUND_FIELD sy-vline 
WA_VEC_S_TASK_TYPE_TR_STR-REF_TABLE sy-vline 
WA_VEC_S_TASK_TYPE_TR_STR-REF_FIELD sy-vline 
WA_VEC_S_TASK_TYPE_TR_STR-LANGU sy-vline 
WA_VEC_S_TASK_TYPE_TR_STR-DESCR sy-vline      INTO ld_text SEPARATED BY SPACE.

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