ABAP Select data from SAP table OIKLIDR_N into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIKLIDR_N
*  INTO TABLE @DATA(IT_OIKLIDR_N2).
*--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_OIKLIDR_N INDEX 1 INTO DATA(WA_OIKLIDR_N2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIKLIDR_N>-CLIENT = 1.
<OIKLIDR_N>-LIDNO = 1.
<OIKLIDR_N>-LIDADDON = 1.
<OIKLIDR_N>-LIDTYPE = 1.
<OIKLIDR_N>-FROMDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIKLIDR_N-TODATE, sy-vline,
  WA_OIKLIDR_N-DOCNO, sy-vline,
  WA_OIKLIDR_N-ITEMNO, sy-vline,
  WA_OIKLIDR_N-DOCTYPE, sy-vline,
  WA_OIKLIDR_N-CONTRTYP, sy-vline,
  WA_OIKLIDR_N-LIDDESC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIKLIDR_N 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_OIKLIDR_N 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_OIKLIDR_N INTO WA_OIKLIDR_N.


*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_OIKLIDR_N-LIDNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIKLIDR_N-LIDNO.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit MATN5, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN5_OUTPUT'
  EXPORTING
    input =                      WA_OIKLIDR_N-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIKLIDR_N-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field DRIVERCODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIKLIDR_N-DRIVERCODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIKLIDR_N-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_OIKLIDR_N_STR, 
CLIENT TYPE STRING,
LIDNO TYPE STRING,
LIDADDON TYPE STRING,
LIDTYPE TYPE STRING,
FROMDATE TYPE STRING,
TODATE TYPE STRING,
DOCNO TYPE STRING,
ITEMNO TYPE STRING,
DOCTYPE TYPE STRING,
CONTRTYP 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,
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,
ERDAT TYPE STRING,
ERZEIT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AEZEIT TYPE STRING,
AENAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIKLIDR_N_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_OIKLIDR_N_STR-CLIENT sy-vline 
WA_OIKLIDR_N_STR-LIDNO sy-vline 
WA_OIKLIDR_N_STR-LIDADDON sy-vline 
WA_OIKLIDR_N_STR-LIDTYPE sy-vline 
WA_OIKLIDR_N_STR-FROMDATE sy-vline 
WA_OIKLIDR_N_STR-TODATE sy-vline 
WA_OIKLIDR_N_STR-DOCNO sy-vline 
WA_OIKLIDR_N_STR-ITEMNO sy-vline 
WA_OIKLIDR_N_STR-DOCTYPE sy-vline 
WA_OIKLIDR_N_STR-CONTRTYP sy-vline 
WA_OIKLIDR_N_STR-LIDDESC sy-vline 
WA_OIKLIDR_N_STR-LIDDEPOT sy-vline 
WA_OIKLIDR_N_STR-LID3COD1 sy-vline 
WA_OIKLIDR_N_STR-LIDACTIND sy-vline 
WA_OIKLIDR_N_STR-LIDDELIND sy-vline 
WA_OIKLIDR_N_STR-LIDBLKIND sy-vline 
WA_OIKLIDR_N_STR-LIDACTREAS sy-vline 
WA_OIKLIDR_N_STR-LIDDELREAS sy-vline 
WA_OIKLIDR_N_STR-LIDBLKREAS sy-vline 
WA_OIKLIDR_N_STR-LID3RDPRTY sy-vline 
WA_OIKLIDR_N_STR-MATNR3RDP sy-vline 
WA_OIKLIDR_N_STR-MATTXT3RDP sy-vline 
WA_OIKLIDR_N_STR-CUST3RDP sy-vline 
WA_OIKLIDR_N_STR-MATNRTAS sy-vline 
WA_OIKLIDR_N_STR-ADDITTAS sy-vline 
WA_OIKLIDR_N_STR-LIDTAS sy-vline 
WA_OIKLIDR_N_STR-BSTYP sy-vline 
WA_OIKLIDR_N_STR-MMDOCNR sy-vline 
WA_OIKLIDR_N_STR-MMDITMNR sy-vline 
WA_OIKLIDR_N_STR-TASGRP1 sy-vline 
WA_OIKLIDR_N_STR-TASGRP2 sy-vline 
WA_OIKLIDR_N_STR-FUNCGROUP sy-vline 
WA_OIKLIDR_N_STR-SDOCART sy-vline 
WA_OIKLIDR_N_STR-TASCFLAG sy-vline 
WA_OIKLIDR_N_STR-KALSU sy-vline 
WA_OIKLIDR_N_STR-SOLDTO sy-vline 
WA_OIKLIDR_N_STR-SHIPTO sy-vline 
WA_OIKLIDR_N_STR-VSTEL sy-vline 
WA_OIKLIDR_N_STR-WERKS sy-vline 
WA_OIKLIDR_N_STR-LGORT sy-vline 
WA_OIKLIDR_N_STR-CHARG sy-vline 
WA_OIKLIDR_N_STR-MATKL sy-vline 
WA_OIKLIDR_N_STR-MATNR sy-vline 
WA_OIKLIDR_N_STR-OIHANTYP sy-vline 
WA_OIKLIDR_N_STR-TPLST sy-vline 
WA_OIKLIDR_N_STR-VEHICLE sy-vline 
WA_OIKLIDR_N_STR-DRIVERCODE sy-vline 
WA_OIKLIDR_N_STR-BWTAR sy-vline 
WA_OIKLIDR_N_STR-SHIFT sy-vline 
WA_OIKLIDR_N_STR-TRIP sy-vline 
WA_OIKLIDR_N_STR-OIC_MOT sy-vline 
WA_OIKLIDR_N_STR-VSBED sy-vline 
WA_OIKLIDR_N_STR-ERDAT sy-vline 
WA_OIKLIDR_N_STR-ERZEIT sy-vline 
WA_OIKLIDR_N_STR-ERNAM sy-vline 
WA_OIKLIDR_N_STR-AEDAT sy-vline 
WA_OIKLIDR_N_STR-AEZEIT sy-vline 
WA_OIKLIDR_N_STR-AENAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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