ABAP Select data from SAP table OIK01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OIK01 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 OIK01. 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 OIK01 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_OIK01 TYPE STANDARD TABLE OF OIK01,
      WA_OIK01 TYPE OIK01,
      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: <OIK01> TYPE OIK01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OIK01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OIK01
  INTO TABLE IT_OIK01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIK01
*  INTO TABLE @DATA(IT_OIK012).
*--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_OIK01 INDEX 1 INTO DATA(WA_OIK012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OIK01 ASSIGNING <OIK01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIK01>-CLIENT = 1.
<OIK01>-VBTYP = 1.
<OIK01>-DOCNO = 1.
<OIK01>-ITEMNO = 1.
<OIK01>-LIDNO = 1.

ENDLOOP.

LOOP AT IT_OIK01 INTO WA_OIK01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIK01-LIDADDON, sy-vline,
  WA_OIK01-LIDTYPE, sy-vline,
  WA_OIK01-CONTRTYP, sy-vline,
  WA_OIK01-FROMDATE, sy-vline,
  WA_OIK01-FROMTIME, sy-vline,
  WA_OIK01-TODATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIK01 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_OIK01 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_OIK01 INTO WA_OIK01.


*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 LIDNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIK01-LIDNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIK01-LIDNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MMDOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIK01-MMDOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIK01-MMDOCNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AUART, internal->external for field SDOCART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_OIK01-SDOCART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIK01-SDOCART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SOLDTO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIK01-SOLDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIK01-SOLDTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SHIPTO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIK01-SHIPTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIK01-SHIPTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_OIK01-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIK01-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VEHICLE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIK01-VEHICLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIK01-VEHICLE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DRIVERCODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIK01-DRIVERCODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIK01-DRIVERCODE.
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_OIK01_STR, 
CLIENT TYPE STRING,
VBTYP TYPE STRING,
DOCNO TYPE STRING,
ITEMNO TYPE STRING,
LIDNO TYPE STRING,
LIDADDON TYPE STRING,
LIDTYPE TYPE STRING,
CONTRTYP TYPE STRING,
FROMDATE TYPE STRING,
FROMTIME TYPE STRING,
TODATE TYPE STRING,
TOTIME TYPE STRING,
COPY_FLAG TYPE STRING,
SEND_FLAG TYPE STRING,
AUTOA_FLAG TYPE STRING,
CONTRSTR TYPE STRING,
CNTRLIND TYPE STRING,
ERDAT TYPE STRING,
ERZEIT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AEZEIT TYPE STRING,
AENAME TYPE STRING,
LIDDESC TYPE STRING,
LIDDEPOT TYPE STRING,
LID3COD1 TYPE STRING,
LIDACTIND TYPE STRING,
LIDDELIND TYPE STRING,
LIDBLKIND TYPE STRING,
LIDACTREAS TYPE STRING,
LIDDELREAS TYPE STRING,
LIDBLKREAS TYPE STRING,
LID3RDPRTY TYPE STRING,
MATNR3RDP TYPE STRING,
MATTXT3RDP TYPE STRING,
CUST3RDP TYPE STRING,
MATNRTAS TYPE STRING,
ADDITTAS TYPE STRING,
LIDTAS TYPE STRING,
BSTYP TYPE STRING,
MMDOCNR TYPE STRING,
MMDITMNR TYPE STRING,
TASGRP1 TYPE STRING,
TASGRP2 TYPE STRING,
FUNCGROUP TYPE STRING,
SDOCART TYPE STRING,
TASCFLAG TYPE STRING,
KALSU TYPE STRING,
USERFLD1 TYPE STRING,
USERFLD2 TYPE STRING,
USERFLD3 TYPE STRING,
USERFLD4 TYPE STRING,
USERFLD5 TYPE STRING,
USERFLD6 TYPE STRING,
USERFLD7 TYPE STRING,
USERFLD8 TYPE STRING,
USERFLD9 TYPE STRING,
USERFLD10 TYPE STRING,
USERFLD11 TYPE STRING,
USERFLD12 TYPE STRING,
USERFLD13 TYPE STRING,
USERFLD14 TYPE STRING,
USERFLD15 TYPE STRING,
USERFLD16 TYPE STRING,
USERFLD17 TYPE STRING,
USERFLD18 TYPE STRING,
USERFLD19 TYPE STRING,
USERFLD20 TYPE STRING,
SOLDTO TYPE STRING,
SHIPTO TYPE STRING,
VSTEL TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
MATKL TYPE STRING,
MATNR TYPE STRING,
OIHANTYP TYPE STRING,
TPLST TYPE STRING,
VEHICLE TYPE STRING,
DRIVERCODE TYPE STRING,
BWTAR TYPE STRING,
SHIFT TYPE STRING,
TRIP TYPE STRING,
OIC_MOT TYPE STRING,
VSBED TYPE STRING,
_DATAAGING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIK01_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_OIK01_STR-CLIENT sy-vline 
WA_OIK01_STR-VBTYP sy-vline 
WA_OIK01_STR-DOCNO sy-vline 
WA_OIK01_STR-ITEMNO sy-vline 
WA_OIK01_STR-LIDNO sy-vline 
WA_OIK01_STR-LIDADDON sy-vline 
WA_OIK01_STR-LIDTYPE sy-vline 
WA_OIK01_STR-CONTRTYP sy-vline 
WA_OIK01_STR-FROMDATE sy-vline 
WA_OIK01_STR-FROMTIME sy-vline 
WA_OIK01_STR-TODATE sy-vline 
WA_OIK01_STR-TOTIME sy-vline 
WA_OIK01_STR-COPY_FLAG sy-vline 
WA_OIK01_STR-SEND_FLAG sy-vline 
WA_OIK01_STR-AUTOA_FLAG sy-vline 
WA_OIK01_STR-CONTRSTR sy-vline 
WA_OIK01_STR-CNTRLIND sy-vline 
WA_OIK01_STR-ERDAT sy-vline 
WA_OIK01_STR-ERZEIT sy-vline 
WA_OIK01_STR-ERNAM sy-vline 
WA_OIK01_STR-AEDAT sy-vline 
WA_OIK01_STR-AEZEIT sy-vline 
WA_OIK01_STR-AENAME sy-vline 
WA_OIK01_STR-LIDDESC sy-vline 
WA_OIK01_STR-LIDDEPOT sy-vline 
WA_OIK01_STR-LID3COD1 sy-vline 
WA_OIK01_STR-LIDACTIND sy-vline 
WA_OIK01_STR-LIDDELIND sy-vline 
WA_OIK01_STR-LIDBLKIND sy-vline 
WA_OIK01_STR-LIDACTREAS sy-vline 
WA_OIK01_STR-LIDDELREAS sy-vline 
WA_OIK01_STR-LIDBLKREAS sy-vline 
WA_OIK01_STR-LID3RDPRTY sy-vline 
WA_OIK01_STR-MATNR3RDP sy-vline 
WA_OIK01_STR-MATTXT3RDP sy-vline 
WA_OIK01_STR-CUST3RDP sy-vline 
WA_OIK01_STR-MATNRTAS sy-vline 
WA_OIK01_STR-ADDITTAS sy-vline 
WA_OIK01_STR-LIDTAS sy-vline 
WA_OIK01_STR-BSTYP sy-vline 
WA_OIK01_STR-MMDOCNR sy-vline 
WA_OIK01_STR-MMDITMNR sy-vline 
WA_OIK01_STR-TASGRP1 sy-vline 
WA_OIK01_STR-TASGRP2 sy-vline 
WA_OIK01_STR-FUNCGROUP sy-vline 
WA_OIK01_STR-SDOCART sy-vline 
WA_OIK01_STR-TASCFLAG sy-vline 
WA_OIK01_STR-KALSU sy-vline 
WA_OIK01_STR-USERFLD1 sy-vline 
WA_OIK01_STR-USERFLD2 sy-vline 
WA_OIK01_STR-USERFLD3 sy-vline 
WA_OIK01_STR-USERFLD4 sy-vline 
WA_OIK01_STR-USERFLD5 sy-vline 
WA_OIK01_STR-USERFLD6 sy-vline 
WA_OIK01_STR-USERFLD7 sy-vline 
WA_OIK01_STR-USERFLD8 sy-vline 
WA_OIK01_STR-USERFLD9 sy-vline 
WA_OIK01_STR-USERFLD10 sy-vline 
WA_OIK01_STR-USERFLD11 sy-vline 
WA_OIK01_STR-USERFLD12 sy-vline 
WA_OIK01_STR-USERFLD13 sy-vline 
WA_OIK01_STR-USERFLD14 sy-vline 
WA_OIK01_STR-USERFLD15 sy-vline 
WA_OIK01_STR-USERFLD16 sy-vline 
WA_OIK01_STR-USERFLD17 sy-vline 
WA_OIK01_STR-USERFLD18 sy-vline 
WA_OIK01_STR-USERFLD19 sy-vline 
WA_OIK01_STR-USERFLD20 sy-vline 
WA_OIK01_STR-SOLDTO sy-vline 
WA_OIK01_STR-SHIPTO sy-vline 
WA_OIK01_STR-VSTEL sy-vline 
WA_OIK01_STR-WERKS sy-vline 
WA_OIK01_STR-LGORT sy-vline 
WA_OIK01_STR-CHARG sy-vline 
WA_OIK01_STR-MATKL sy-vline 
WA_OIK01_STR-MATNR sy-vline 
WA_OIK01_STR-OIHANTYP sy-vline 
WA_OIK01_STR-TPLST sy-vline 
WA_OIK01_STR-VEHICLE sy-vline 
WA_OIK01_STR-DRIVERCODE sy-vline 
WA_OIK01_STR-BWTAR sy-vline 
WA_OIK01_STR-SHIFT sy-vline 
WA_OIK01_STR-TRIP sy-vline 
WA_OIK01_STR-OIC_MOT sy-vline 
WA_OIK01_STR-VSBED sy-vline 
WA_OIK01_STR-_DATAAGING sy-vline      INTO ld_text SEPARATED BY SPACE.

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