ABAP Select data from SAP table IWRKITMINFERENCE into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IWRKITMINFERENCE
*  INTO TABLE @DATA(IT_IWRKITMINFERENCE2).
*--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_IWRKITMINFERENCE INDEX 1 INTO DATA(WA_IWRKITMINFERENCE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IWRKITMINFERENCE>-MANDT = 1.
<IWRKITMINFERENCE>-WORKFLOWTASKINTERNALID = 1.
<IWRKITMINFERENCE>-UTILSMCHNLRNGRELCONFIDENCEVAL = 1.
<IWRKITMINFERENCE>-PURREQNAPPRVLRANK1FEATURE = 1.
<IWRKITMINFERENCE>-PURREQNAPPRVLRANK1FEATUREVALUE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IWRKITMINFERENCE-PURREQNAPPRVLRANK2FEATURE, sy-vline,
  WA_IWRKITMINFERENCE-PURREQNAPPRVLRANK2FEATUREVALUE, sy-vline,
  WA_IWRKITMINFERENCE-PURREQNAPPRVLRANK3FEATURE, sy-vline,
  WA_IWRKITMINFERENCE-PURREQNAPPRVLRANK3FEATUREVALUE, sy-vline,
  WA_IWRKITMINFERENCE-PURREQNAPPRVLRANK4FEATURE, sy-vline,
  WA_IWRKITMINFERENCE-PURREQNAPPRVLRANK4FEATUREVALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IWRKITMINFERENCE 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_IWRKITMINFERENCE 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_IWRKITMINFERENCE INTO WA_IWRKITMINFERENCE.


*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_IWRKITMINFERENCE_STR, 
MANDT TYPE STRING,
WORKFLOWTASKINTERNALID TYPE STRING,
UTILSMCHNLRNGRELCONFIDENCEVAL TYPE STRING,
PURREQNAPPRVLRANK1FEATURE TYPE STRING,
PURREQNAPPRVLRANK1FEATUREVALUE TYPE STRING,
PURREQNAPPRVLRANK2FEATURE TYPE STRING,
PURREQNAPPRVLRANK2FEATUREVALUE TYPE STRING,
PURREQNAPPRVLRANK3FEATURE TYPE STRING,
PURREQNAPPRVLRANK3FEATUREVALUE TYPE STRING,
PURREQNAPPRVLRANK4FEATURE TYPE STRING,
PURREQNAPPRVLRANK4FEATUREVALUE TYPE STRING,
PURREQNAPPRVLRANK5FEATURE TYPE STRING,
PURREQNAPPRVLRANK5FEATUREVALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IWRKITMINFERENCE_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_IWRKITMINFERENCE_STR-MANDT sy-vline 
WA_IWRKITMINFERENCE_STR-WORKFLOWTASKINTERNALID sy-vline 
WA_IWRKITMINFERENCE_STR-UTILSMCHNLRNGRELCONFIDENCEVAL sy-vline 
WA_IWRKITMINFERENCE_STR-PURREQNAPPRVLRANK1FEATURE sy-vline 
WA_IWRKITMINFERENCE_STR-PURREQNAPPRVLRANK1FEATUREVALUE sy-vline 
WA_IWRKITMINFERENCE_STR-PURREQNAPPRVLRANK2FEATURE sy-vline 
WA_IWRKITMINFERENCE_STR-PURREQNAPPRVLRANK2FEATUREVALUE sy-vline 
WA_IWRKITMINFERENCE_STR-PURREQNAPPRVLRANK3FEATURE sy-vline 
WA_IWRKITMINFERENCE_STR-PURREQNAPPRVLRANK3FEATUREVALUE sy-vline 
WA_IWRKITMINFERENCE_STR-PURREQNAPPRVLRANK4FEATURE sy-vline 
WA_IWRKITMINFERENCE_STR-PURREQNAPPRVLRANK4FEATUREVALUE sy-vline 
WA_IWRKITMINFERENCE_STR-PURREQNAPPRVLRANK5FEATURE sy-vline 
WA_IWRKITMINFERENCE_STR-PURREQNAPPRVLRANK5FEATUREVALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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