ABAP Select data from SAP table OIH_O4KT_INPUT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OIH_O4KT_INPUT 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 OIH_O4KT_INPUT. 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 OIH_O4KT_INPUT 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_OIH_O4KT_INPUT TYPE STANDARD TABLE OF OIH_O4KT_INPUT,
      WA_OIH_O4KT_INPUT TYPE OIH_O4KT_INPUT,
      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: <OIH_O4KT_INPUT> TYPE OIH_O4KT_INPUT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OIH_O4KT_INPUT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OIH_O4KT_INPUT
  INTO TABLE IT_OIH_O4KT_INPUT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIH_O4KT_INPUT
*  INTO TABLE @DATA(IT_OIH_O4KT_INPUT2).
*--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_OIH_O4KT_INPUT INDEX 1 INTO DATA(WA_OIH_O4KT_INPUT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OIH_O4KT_INPUT ASSIGNING <OIH_O4KT_INPUT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIH_O4KT_INPUT>-CURTP = 1.
<OIH_O4KT_INPUT>-WAERS = 1.
<OIH_O4KT_INPUT>-MATNR = 1.
<OIH_O4KT_INPUT>-BWKEY = 1.
<OIH_O4KT_INPUT>-BWTAR = 1.

ENDLOOP.

LOOP AT IT_OIH_O4KT_INPUT INTO WA_OIH_O4KT_INPUT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIH_O4KT_INPUT-OICURVAL, sy-vline,
  WA_OIH_O4KT_INPUT-OICURDATE, sy-vline,
  WA_OIH_O4KT_INPUT-OICURQTY, sy-vline,
  WA_OIH_O4KT_INPUT-OICURUT, sy-vline,
  WA_OIH_O4KT_INPUT-OIFUTVAL, sy-vline,
  WA_OIH_O4KT_INPUT-OIFUTDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIH_O4KT_INPUT 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_OIH_O4KT_INPUT 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_OIH_O4KT_INPUT INTO WA_OIH_O4KT_INPUT.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_OIH_O4KT_INPUT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIH_O4KT_INPUT-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field OICURUT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_OIH_O4KT_INPUT-OICURUT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIH_O4KT_INPUT-OICURUT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field OIFUTUT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_OIH_O4KT_INPUT-OIFUTUT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIH_O4KT_INPUT-OIFUTUT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_OIH_O4KT_INPUT-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIH_O4KT_INPUT-MEINS.
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_OIH_O4KT_INPUT_STR, 
CURTP TYPE STRING,
WAERS TYPE STRING,
MATNR TYPE STRING,
BWKEY TYPE STRING,
BWTAR TYPE STRING,
OICURVAL TYPE STRING,
OICURDATE TYPE STRING,
OICURQTY TYPE STRING,
OICURUT TYPE STRING,
OIFUTVAL TYPE STRING,
OIFUTDATE TYPE STRING,
OIFUTQTY TYPE STRING,
OIFUTUT TYPE STRING,
OINVALQTY TYPE STRING,
OIREQUAT TYPE STRING,
OITAXKEY TYPE STRING,
OITAXDIFF TYPE STRING,
OITAXDIFF1 TYPE STRING,
OITAXDIFF2 TYPE STRING,
OITAXDIFF3 TYPE STRING,
OITAXDIFF4 TYPE STRING,
OITAXDIFF5 TYPE STRING,
OITAXDIFF6 TYPE STRING,
OIHANTYP TYPE STRING,
OITAXGRP TYPE STRING,
SELKZ TYPE STRING,
KALN1 TYPE STRING,
SOBKZ TYPE STRING,
MAKTX TYPE STRING,
PSTXT TYPE STRING,
LBKUM TYPE STRING,
MEINS TYPE STRING,
SAVEPR_S TYPE STRING,
SAVEPR_V TYPE STRING,
ERZKALK TYPE STRING,
ZUKBEW TYPE STRING,
MANPAE_S TYPE STRING,
MANPAE_V TYPE STRING,
IERZKALK TYPE STRING,
IZUKBEW TYPE STRING,
LFDKALK TYPE STRING,
OIOILCON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIH_O4KT_INPUT_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_OIH_O4KT_INPUT_STR-CURTP sy-vline 
WA_OIH_O4KT_INPUT_STR-WAERS sy-vline 
WA_OIH_O4KT_INPUT_STR-MATNR sy-vline 
WA_OIH_O4KT_INPUT_STR-BWKEY sy-vline 
WA_OIH_O4KT_INPUT_STR-BWTAR sy-vline 
WA_OIH_O4KT_INPUT_STR-OICURVAL sy-vline 
WA_OIH_O4KT_INPUT_STR-OICURDATE sy-vline 
WA_OIH_O4KT_INPUT_STR-OICURQTY sy-vline 
WA_OIH_O4KT_INPUT_STR-OICURUT sy-vline 
WA_OIH_O4KT_INPUT_STR-OIFUTVAL sy-vline 
WA_OIH_O4KT_INPUT_STR-OIFUTDATE sy-vline 
WA_OIH_O4KT_INPUT_STR-OIFUTQTY sy-vline 
WA_OIH_O4KT_INPUT_STR-OIFUTUT sy-vline 
WA_OIH_O4KT_INPUT_STR-OINVALQTY sy-vline 
WA_OIH_O4KT_INPUT_STR-OIREQUAT sy-vline 
WA_OIH_O4KT_INPUT_STR-OITAXKEY sy-vline 
WA_OIH_O4KT_INPUT_STR-OITAXDIFF sy-vline 
WA_OIH_O4KT_INPUT_STR-OITAXDIFF1 sy-vline 
WA_OIH_O4KT_INPUT_STR-OITAXDIFF2 sy-vline 
WA_OIH_O4KT_INPUT_STR-OITAXDIFF3 sy-vline 
WA_OIH_O4KT_INPUT_STR-OITAXDIFF4 sy-vline 
WA_OIH_O4KT_INPUT_STR-OITAXDIFF5 sy-vline 
WA_OIH_O4KT_INPUT_STR-OITAXDIFF6 sy-vline 
WA_OIH_O4KT_INPUT_STR-OIHANTYP sy-vline 
WA_OIH_O4KT_INPUT_STR-OITAXGRP sy-vline 
WA_OIH_O4KT_INPUT_STR-SELKZ sy-vline 
WA_OIH_O4KT_INPUT_STR-KALN1 sy-vline 
WA_OIH_O4KT_INPUT_STR-SOBKZ sy-vline 
WA_OIH_O4KT_INPUT_STR-MAKTX sy-vline 
WA_OIH_O4KT_INPUT_STR-PSTXT sy-vline 
WA_OIH_O4KT_INPUT_STR-LBKUM sy-vline 
WA_OIH_O4KT_INPUT_STR-MEINS sy-vline 
WA_OIH_O4KT_INPUT_STR-SAVEPR_S sy-vline 
WA_OIH_O4KT_INPUT_STR-SAVEPR_V sy-vline 
WA_OIH_O4KT_INPUT_STR-ERZKALK sy-vline 
WA_OIH_O4KT_INPUT_STR-ZUKBEW sy-vline 
WA_OIH_O4KT_INPUT_STR-MANPAE_S sy-vline 
WA_OIH_O4KT_INPUT_STR-MANPAE_V sy-vline 
WA_OIH_O4KT_INPUT_STR-IERZKALK sy-vline 
WA_OIH_O4KT_INPUT_STR-IZUKBEW sy-vline 
WA_OIH_O4KT_INPUT_STR-LFDKALK sy-vline 
WA_OIH_O4KT_INPUT_STR-OIOILCON sy-vline      INTO ld_text SEPARATED BY SPACE.

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