ABAP Select data from SAP table BOITEM into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BOITEM
*  INTO TABLE @DATA(IT_BOITEM2).
*--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_BOITEM INDEX 1 INTO DATA(WA_BOITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BOITEM>-KAPPL = 1.
<BOITEM>-KNUMA = 1.
<BOITEM>-KSCHL = 1.
<BOITEM>-KOTABNR = 1.
<BOITEM>-VAKEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BOITEM-DATAB, sy-vline,
  WA_BOITEM-DATBI, sy-vline,
  WA_BOITEM-KUNXX, sy-vline,
  WA_BOITEM-MATNR, sy-vline,
  WA_BOITEM-SPMON_I, sy-vline,
  WA_BOITEM-VBELN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BOITEM 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_BOITEM 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_BOITEM INTO WA_BOITEM.


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

*Conversion exit KOTAB, internal->external for field KOTABNR
CALL FUNCTION 'CONVERSION_EXIT_KOTAB_OUTPUT'
  EXPORTING
    input =                      WA_BOITEM-KOTABNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BOITEM-KOTABNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit PERI, internal->external for field SPMON_I
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_BOITEM-SPMON_I
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BOITEM-SPMON_I.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit PERI, internal->external for field SPMON
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_BOITEM-SPMON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BOITEM-SPMON.
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_BOITEM_STR, 
KAPPL TYPE STRING,
KNUMA TYPE STRING,
KSCHL TYPE STRING,
KOTABNR TYPE STRING,
VAKEY TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
KUNXX TYPE STRING,
MATNR TYPE STRING,
SPMON_I TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
FBUDA TYPE STRING,
KUNAG TYPE STRING,
KUNRG TYPE STRING,
RR_WAERS TYPE STRING,
KWAEH_AUF TYPE STRING,
KONWS_AUF TYPE STRING,
KONBAS TYPE STRING,
KONSTA TYPE STRING,
DECIMALS TYPE STRING,
KNUMH TYPE STRING,
KOPOS TYPE STRING,
SPMON TYPE STRING,
RUWRT TYPE STRING,
KAWRT_K TYPE STRING,
KSTBS TYPE STRING,
KWAEH TYPE STRING,
RUWRT_K TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BOITEM_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_BOITEM_STR-KAPPL sy-vline 
WA_BOITEM_STR-KNUMA sy-vline 
WA_BOITEM_STR-KSCHL sy-vline 
WA_BOITEM_STR-KOTABNR sy-vline 
WA_BOITEM_STR-VAKEY sy-vline 
WA_BOITEM_STR-DATAB sy-vline 
WA_BOITEM_STR-DATBI sy-vline 
WA_BOITEM_STR-KUNXX sy-vline 
WA_BOITEM_STR-MATNR sy-vline 
WA_BOITEM_STR-SPMON_I sy-vline 
WA_BOITEM_STR-VBELN sy-vline 
WA_BOITEM_STR-POSNR sy-vline 
WA_BOITEM_STR-FBUDA sy-vline 
WA_BOITEM_STR-KUNAG sy-vline 
WA_BOITEM_STR-KUNRG sy-vline 
WA_BOITEM_STR-RR_WAERS sy-vline 
WA_BOITEM_STR-KWAEH_AUF sy-vline 
WA_BOITEM_STR-KONWS_AUF sy-vline 
WA_BOITEM_STR-KONBAS sy-vline 
WA_BOITEM_STR-KONSTA sy-vline 
WA_BOITEM_STR-DECIMALS sy-vline 
WA_BOITEM_STR-KNUMH sy-vline 
WA_BOITEM_STR-KOPOS sy-vline 
WA_BOITEM_STR-SPMON sy-vline 
WA_BOITEM_STR-RUWRT sy-vline 
WA_BOITEM_STR-KAWRT_K sy-vline 
WA_BOITEM_STR-KSTBS sy-vline 
WA_BOITEM_STR-KWAEH sy-vline 
WA_BOITEM_STR-RUWRT_K sy-vline      INTO ld_text SEPARATED BY SPACE.

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