ABAP Select data from SAP table KOMWBHITXTH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMWBHITXTH
*  INTO TABLE @DATA(IT_KOMWBHITXTH2).
*--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_KOMWBHITXTH INDEX 1 INTO DATA(WA_KOMWBHITXTH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMWBHITXTH>-VERSION = 1.
<KOMWBHITXTH>-TKONN = 1.
<KOMWBHITXTH>-TPOSN = 1.
<KOMWBHITXTH>-MSGFN = 1.
<KOMWBHITXTH>-MANDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMWBHITXTH-TDOBJECT, sy-vline,
  WA_KOMWBHITXTH-TDNAME, sy-vline,
  WA_KOMWBHITXTH-TDID, sy-vline,
  WA_KOMWBHITXTH-TDSPRAS, sy-vline,
  WA_KOMWBHITXTH-TDTITLE, sy-vline,
  WA_KOMWBHITXTH-TDFRELES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMWBHITXTH 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_KOMWBHITXTH 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_KOMWBHITXTH INTO WA_KOMWBHITXTH.


*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 ALPHA, internal->external for field TKONN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMWBHITXTH-TKONN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMWBHITXTH-TKONN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field TDSPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_KOMWBHITXTH-TDSPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMWBHITXTH-TDSPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field TDOSPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_KOMWBHITXTH-TDOSPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMWBHITXTH-TDOSPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMWBHITXTH-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMWBHITXTH-LOGSYS.
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_KOMWBHITXTH_STR, 
VERSION TYPE STRING,
TKONN TYPE STRING,
TPOSN TYPE STRING,
MSGFN TYPE STRING,
MANDT TYPE STRING,
TDOBJECT TYPE STRING,
TDNAME TYPE STRING,
TDID TYPE STRING,
TDSPRAS TYPE STRING,
TDTITLE TYPE STRING,
TDFRELES TYPE STRING,
TDFUSER TYPE STRING,
TDFDATE TYPE STRING,
TDFTIME TYPE STRING,
TDLRELES TYPE STRING,
TDLUSER TYPE STRING,
TDLDATE TYPE STRING,
TDLTIME TYPE STRING,
TDVERSION TYPE STRING,
TDSTYLE TYPE STRING,
TDFORM TYPE STRING,
TDHYPHENAT TYPE STRING,
TDTRANSTAT TYPE STRING,
TDOSPRAS TYPE STRING,
TDMACODE1 TYPE STRING,
TDMACODE2 TYPE STRING,
TDTXTLINES TYPE STRING,
TDREF TYPE STRING,
TDREFOBJ TYPE STRING,
TDREFNAME TYPE STRING,
TDREFID TYPE STRING,
TDTEXTTYPE TYPE STRING,
TDCOMPRESS TYPE STRING,
TDOCLASS TYPE STRING,
LOGSYS TYPE STRING,
TDFORMAT TYPE STRING,
TDLINE TYPE STRING,
UPDKZ TYPE STRING,
LCOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMWBHITXTH_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_KOMWBHITXTH_STR-VERSION sy-vline 
WA_KOMWBHITXTH_STR-TKONN sy-vline 
WA_KOMWBHITXTH_STR-TPOSN sy-vline 
WA_KOMWBHITXTH_STR-MSGFN sy-vline 
WA_KOMWBHITXTH_STR-MANDT sy-vline 
WA_KOMWBHITXTH_STR-TDOBJECT sy-vline 
WA_KOMWBHITXTH_STR-TDNAME sy-vline 
WA_KOMWBHITXTH_STR-TDID sy-vline 
WA_KOMWBHITXTH_STR-TDSPRAS sy-vline 
WA_KOMWBHITXTH_STR-TDTITLE sy-vline 
WA_KOMWBHITXTH_STR-TDFRELES sy-vline 
WA_KOMWBHITXTH_STR-TDFUSER sy-vline 
WA_KOMWBHITXTH_STR-TDFDATE sy-vline 
WA_KOMWBHITXTH_STR-TDFTIME sy-vline 
WA_KOMWBHITXTH_STR-TDLRELES sy-vline 
WA_KOMWBHITXTH_STR-TDLUSER sy-vline 
WA_KOMWBHITXTH_STR-TDLDATE sy-vline 
WA_KOMWBHITXTH_STR-TDLTIME sy-vline 
WA_KOMWBHITXTH_STR-TDVERSION sy-vline 
WA_KOMWBHITXTH_STR-TDSTYLE sy-vline 
WA_KOMWBHITXTH_STR-TDFORM sy-vline 
WA_KOMWBHITXTH_STR-TDHYPHENAT sy-vline 
WA_KOMWBHITXTH_STR-TDTRANSTAT sy-vline 
WA_KOMWBHITXTH_STR-TDOSPRAS sy-vline 
WA_KOMWBHITXTH_STR-TDMACODE1 sy-vline 
WA_KOMWBHITXTH_STR-TDMACODE2 sy-vline 
WA_KOMWBHITXTH_STR-TDTXTLINES sy-vline 
WA_KOMWBHITXTH_STR-TDREF sy-vline 
WA_KOMWBHITXTH_STR-TDREFOBJ sy-vline 
WA_KOMWBHITXTH_STR-TDREFNAME sy-vline 
WA_KOMWBHITXTH_STR-TDREFID sy-vline 
WA_KOMWBHITXTH_STR-TDTEXTTYPE sy-vline 
WA_KOMWBHITXTH_STR-TDCOMPRESS sy-vline 
WA_KOMWBHITXTH_STR-TDOCLASS sy-vline 
WA_KOMWBHITXTH_STR-LOGSYS sy-vline 
WA_KOMWBHITXTH_STR-TDFORMAT sy-vline 
WA_KOMWBHITXTH_STR-TDLINE sy-vline 
WA_KOMWBHITXTH_STR-UPDKZ sy-vline 
WA_KOMWBHITXTH_STR-LCOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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