ABAP Select data from SAP table /MRE/SO_ITEM_PRE_ORDER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /MRE/SO_ITEM_PRE_ORDER 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 /MRE/SO_ITEM_PRE_ORDER. 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 /MRE/SO_ITEM_PRE_ORDER 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_/MRE/SO_ITEM_PRE_ORDER TYPE STANDARD TABLE OF /MRE/SO_ITEM_PRE_ORDER,
      WA_/MRE/SO_ITEM_PRE_ORDER TYPE /MRE/SO_ITEM_PRE_ORDER,
      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: </MRE/SO_ITEM_PRE_ORDER> TYPE /MRE/SO_ITEM_PRE_ORDER.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /MRE/SO_ITEM_PRE_ORDER
  INTO TABLE IT_/MRE/SO_ITEM_PRE_ORDER.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MRE/SO_ITEM_PRE_ORDER
*  INTO TABLE @DATA(IT_/MRE/SO_ITEM_PRE_ORDER2).
*--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_/MRE/SO_ITEM_PRE_ORDER INDEX 1 INTO DATA(WA_/MRE/SO_ITEM_PRE_ORDER2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/MRE/SO_ITEM_PRE_ORDER ASSIGNING </MRE/SO_ITEM_PRE_ORDER>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MRE/SO_ITEM_PRE_ORDER>-VBELN = 1.
</MRE/SO_ITEM_PRE_ORDER>-POSNR = 1.
</MRE/SO_ITEM_PRE_ORDER>-ETENR = 1.
</MRE/SO_ITEM_PRE_ORDER>-SELKZ = 1.
</MRE/SO_ITEM_PRE_ORDER>-ARKTX = 1.

ENDLOOP.

LOOP AT IT_/MRE/SO_ITEM_PRE_ORDER INTO WA_/MRE/SO_ITEM_PRE_ORDER.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MRE/SO_ITEM_PRE_ORDER-AUART, sy-vline,
  WA_/MRE/SO_ITEM_PRE_ORDER-AUDAT, sy-vline,
  WA_/MRE/SO_ITEM_PRE_ORDER-BMENG, sy-vline,
  WA_/MRE/SO_ITEM_PRE_ORDER-BSTNK, sy-vline,
  WA_/MRE/SO_ITEM_PRE_ORDER-BSTKD, sy-vline,
  WA_/MRE/SO_ITEM_PRE_ORDER-CHARG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MRE/SO_ITEM_PRE_ORDER 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_/MRE/SO_ITEM_PRE_ORDER 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_/MRE/SO_ITEM_PRE_ORDER INTO WA_/MRE/SO_ITEM_PRE_ORDER.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MRE/SO_ITEM_PRE_ORDER-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRE/SO_ITEM_PRE_ORDER-VBELN.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit EXCRT, internal->external for field KURSK
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_/MRE/SO_ITEM_PRE_ORDER-KURSK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRE/SO_ITEM_PRE_ORDER-KURSK.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit AUART, internal->external for field AUARA
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_/MRE/SO_ITEM_PRE_ORDER-AUARA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRE/SO_ITEM_PRE_ORDER-AUARA.
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_/MRE/SO_ITEM_PRE_ORDER_STR, 
VBELN TYPE STRING,
POSNR TYPE STRING,
ETENR TYPE STRING,
SELKZ TYPE STRING,
ARKTX TYPE STRING,
AUART TYPE STRING,
AUDAT TYPE STRING,
BMENG TYPE STRING,
BSTNK TYPE STRING,
BSTKD TYPE STRING,
CHARG TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
EDATU TYPE STRING,
ERNAM TYPE STRING,
FAKSK TYPE STRING,
KUNNR TYPE STRING,
KURSK TYPE STRING,
KWMENG TYPE STRING,
LGORT TYPE STRING,
LFIMG TYPE STRING,
LIFSK TYPE STRING,
MATNR TYPE STRING,
MEINS TYPE STRING,
NAME1 TYPE STRING,
CBETR TYPE STRING,
CSEPR TYPE STRING,
CSEIN TYPE STRING,
CMEIN TYPE STRING,
CNETW TYPE STRING,
CWAER TYPE STRING,
NETPR TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
NETWR_AK TYPE STRING,
NETWR TYPE STRING,
SPART TYPE STRING,
STATUS TYPE STRING,
STATU TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
VKORG TYPE STRING,
VRKME TYPE STRING,
VSTEL TYPE STRING,
VTWEG TYPE STRING,
WADAT TYPE STRING,
WAERK TYPE STRING,
WERKS TYPE STRING,
WMENG TYPE STRING,
WLDAT TYPE STRING,
KTEXT TYPE STRING,
AUGRU TYPE STRING,
ABGRU TYPE STRING,
AWAHR TYPE STRING,
ADRNR TYPE STRING,
VBTYP TYPE STRING,
SHKZG TYPE STRING,
ACTIV TYPE STRING,
AUARA TYPE STRING,
PRSDT TYPE STRING,
KURSK_DAT TYPE STRING,
KURRF_DAT TYPE STRING,
KURST TYPE STRING,
VLAUFZ TYPE STRING,
VLAUEZ TYPE STRING,
VLAUFK TYPE STRING,
VINSDAT TYPE STRING,
VABNDAT TYPE STRING,
VUNTDAT TYPE STRING,
VKUESCH TYPE STRING,
VAKTSCH TYPE STRING,
VEINDAT TYPE STRING,
VWUNDAT TYPE STRING,
VKUEPAR TYPE STRING,
VKUEGRU TYPE STRING,
VBELKUE TYPE STRING,
VBEDKUE TYPE STRING,
VDEMDAT TYPE STRING,
VASDA TYPE STRING,
AKTVT TYPE STRING,
BEZEI TYPE STRING,
DUMMY TYPE STRING,
ERDAT TYPE STRING,
ERZET TYPE STRING,
PRE_ORDER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MRE/SO_ITEM_PRE_ORDER_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_/MRE/SO_ITEM_PRE_ORDER_STR-VBELN sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-POSNR sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-ETENR sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-SELKZ sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-ARKTX sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-AUART sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-AUDAT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-BMENG sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-BSTNK sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-BSTKD sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-CHARG sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-DATAB sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-DATBI sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-EDATU sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-ERNAM sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-FAKSK sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-KUNNR sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-KURSK sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-KWMENG sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-LGORT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-LFIMG sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-LIFSK sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-MATNR sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-MEINS sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-NAME1 sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-CBETR sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-CSEPR sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-CSEIN sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-CMEIN sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-CNETW sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-CWAER sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-NETPR sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-KPEIN sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-KMEIN sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-NETWR_AK sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-NETWR sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-SPART sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-STATUS sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-STATU sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VKBUR sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VKGRP sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VKORG sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VRKME sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VSTEL sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VTWEG sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-WADAT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-WAERK sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-WERKS sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-WMENG sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-WLDAT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-KTEXT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-AUGRU sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-ABGRU sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-AWAHR sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-ADRNR sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VBTYP sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-SHKZG sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-ACTIV sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-AUARA sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-PRSDT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-KURSK_DAT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-KURRF_DAT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-KURST sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VLAUFZ sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VLAUEZ sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VLAUFK sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VINSDAT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VABNDAT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VUNTDAT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VKUESCH sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VAKTSCH sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VEINDAT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VWUNDAT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VKUEPAR sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VKUEGRU sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VBELKUE sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VBEDKUE sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VDEMDAT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-VASDA sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-AKTVT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-BEZEI sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-DUMMY sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-ERDAT sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-ERZET sy-vline 
WA_/MRE/SO_ITEM_PRE_ORDER_STR-PRE_ORDER sy-vline      INTO ld_text SEPARATED BY SPACE.

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