ABAP Select data from SAP table BS01ITEMEX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BS01ITEMEX 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 BS01ITEMEX. 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 BS01ITEMEX 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_BS01ITEMEX TYPE STANDARD TABLE OF BS01ITEMEX,
      WA_BS01ITEMEX TYPE BS01ITEMEX,
      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: <BS01ITEMEX> TYPE BS01ITEMEX.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BS01ITEMEX.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BS01ITEMEX
  INTO TABLE IT_BS01ITEMEX.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BS01ITEMEX
*  INTO TABLE @DATA(IT_BS01ITEMEX2).
*--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_BS01ITEMEX INDEX 1 INTO DATA(WA_BS01ITEMEX2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BS01ITEMEX ASSIGNING <BS01ITEMEX>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BS01ITEMEX>-ITM_NUMBER = 1.
<BS01ITEMEX>-PO_ITM_NO = 1.
<BS01ITEMEX>-MATERIAL = 1.
<BS01ITEMEX>-MAT_ENTRD = 1.
<BS01ITEMEX>-SHORT_TEXT = 1.

ENDLOOP.

LOOP AT IT_BS01ITEMEX INTO WA_BS01ITEMEX.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BS01ITEMEX-NET_VALUE, sy-vline,
  WA_BS01ITEMEX-CURRENCY, sy-vline,
  WA_BS01ITEMEX-SUBTOTAL_1, sy-vline,
  WA_BS01ITEMEX-SUBTOTAL_2, sy-vline,
  WA_BS01ITEMEX-SUBTOTAL_3, sy-vline,
  WA_BS01ITEMEX-SUBTOTAL_4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BS01ITEMEX 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_BS01ITEMEX 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_BS01ITEMEX INTO WA_BS01ITEMEX.


*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 PO_ITM_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BS01ITEMEX-PO_ITM_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BS01ITEMEX-PO_ITM_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_BS01ITEMEX-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BS01ITEMEX-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MAT_ENTRD
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_BS01ITEMEX-MAT_ENTRD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BS01ITEMEX-MAT_ENTRD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SALES_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BS01ITEMEX-SALES_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BS01ITEMEX-SALES_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PO_ITM_NO_S
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BS01ITEMEX-PO_ITM_NO_S
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BS01ITEMEX-PO_ITM_NO_S.
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_BS01ITEMEX_STR, 
ITM_NUMBER TYPE STRING,
PO_ITM_NO TYPE STRING,
MATERIAL TYPE STRING,
MAT_ENTRD TYPE STRING,
SHORT_TEXT TYPE STRING,
NET_VALUE TYPE STRING,
CURRENCY TYPE STRING,
SUBTOTAL_1 TYPE STRING,
SUBTOTAL_2 TYPE STRING,
SUBTOTAL_3 TYPE STRING,
SUBTOTAL_4 TYPE STRING,
SUBTOTAL_5 TYPE STRING,
SUBTOTAL_6 TYPE STRING,
SALES_UNIT TYPE STRING,
QTY_REQ_DT TYPE STRING,
DLV_DATE TYPE STRING,
REPL_TIME TYPE STRING,
CONFIGURED TYPE STRING,
PURCH_NO_C TYPE STRING,
PURCH_DATE TYPE STRING,
PO_METHOD TYPE STRING,
REF_1 TYPE STRING,
PURCH_NO_S TYPE STRING,
PO_DAT_S TYPE STRING,
PO_METH_S TYPE STRING,
REF_1_S TYPE STRING,
PO_ITM_NO_S TYPE STRING,
NET_VALUE1 TYPE STRING,
CURR_ISO TYPE STRING,
S_UNIT_ISO TYPE STRING,
REQ_QTY TYPE STRING,
PLANT TYPE STRING,
TX_DOC_CUR TYPE STRING,
PACKNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BS01ITEMEX_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_BS01ITEMEX_STR-ITM_NUMBER sy-vline 
WA_BS01ITEMEX_STR-PO_ITM_NO sy-vline 
WA_BS01ITEMEX_STR-MATERIAL sy-vline 
WA_BS01ITEMEX_STR-MAT_ENTRD sy-vline 
WA_BS01ITEMEX_STR-SHORT_TEXT sy-vline 
WA_BS01ITEMEX_STR-NET_VALUE sy-vline 
WA_BS01ITEMEX_STR-CURRENCY sy-vline 
WA_BS01ITEMEX_STR-SUBTOTAL_1 sy-vline 
WA_BS01ITEMEX_STR-SUBTOTAL_2 sy-vline 
WA_BS01ITEMEX_STR-SUBTOTAL_3 sy-vline 
WA_BS01ITEMEX_STR-SUBTOTAL_4 sy-vline 
WA_BS01ITEMEX_STR-SUBTOTAL_5 sy-vline 
WA_BS01ITEMEX_STR-SUBTOTAL_6 sy-vline 
WA_BS01ITEMEX_STR-SALES_UNIT sy-vline 
WA_BS01ITEMEX_STR-QTY_REQ_DT sy-vline 
WA_BS01ITEMEX_STR-DLV_DATE sy-vline 
WA_BS01ITEMEX_STR-REPL_TIME sy-vline 
WA_BS01ITEMEX_STR-CONFIGURED sy-vline 
WA_BS01ITEMEX_STR-PURCH_NO_C sy-vline 
WA_BS01ITEMEX_STR-PURCH_DATE sy-vline 
WA_BS01ITEMEX_STR-PO_METHOD sy-vline 
WA_BS01ITEMEX_STR-REF_1 sy-vline 
WA_BS01ITEMEX_STR-PURCH_NO_S sy-vline 
WA_BS01ITEMEX_STR-PO_DAT_S sy-vline 
WA_BS01ITEMEX_STR-PO_METH_S sy-vline 
WA_BS01ITEMEX_STR-REF_1_S sy-vline 
WA_BS01ITEMEX_STR-PO_ITM_NO_S sy-vline 
WA_BS01ITEMEX_STR-NET_VALUE1 sy-vline 
WA_BS01ITEMEX_STR-CURR_ISO sy-vline 
WA_BS01ITEMEX_STR-S_UNIT_ISO sy-vline 
WA_BS01ITEMEX_STR-REQ_QTY sy-vline 
WA_BS01ITEMEX_STR-PLANT sy-vline 
WA_BS01ITEMEX_STR-TX_DOC_CUR sy-vline 
WA_BS01ITEMEX_STR-PACKNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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