ABAP Select data from SAP table BNCOM1 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BNCOM1 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 BNCOM1. 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 BNCOM1 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_BNCOM1 TYPE STANDARD TABLE OF BNCOM1,
      WA_BNCOM1 TYPE BNCOM1,
      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: <BNCOM1> TYPE BNCOM1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BNCOM1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BNCOM1
  INTO TABLE IT_BNCOM1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BNCOM1
*  INTO TABLE @DATA(IT_BNCOM12).
*--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_BNCOM1 INDEX 1 INTO DATA(WA_BNCOM12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BNCOM1 ASSIGNING <BNCOM1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BNCOM1>-LIFNR = 1.
<BNCOM1>-LICHA = 1.
<BNCOM1>-EKORG = 1.
<BNCOM1>-AUART = 1.
<BNCOM1>-AUTYP = 1.

ENDLOOP.

LOOP AT IT_BNCOM1 INTO WA_BNCOM1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BNCOM1-LGNUM, sy-vline,
  WA_BNCOM1-BWLVS, sy-vline,
  WA_BNCOM1-MATNR, sy-vline,
  WA_BNCOM1-WERKS, sy-vline,
  WA_BNCOM1-LGORT, sy-vline,
  WA_BNCOM1-WAGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BNCOM1 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_BNCOM1 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_BNCOM1 INTO WA_BNCOM1.


*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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BNCOM1-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BNCOM1-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_BNCOM1-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BNCOM1-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field UMMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_BNCOM1-UMMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BNCOM1-UMMAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field PMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_BNCOM1-PMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BNCOM1-PMATN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BNCOM1-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BNCOM1-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BNCOM1-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BNCOM1-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BNCOM1-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BNCOM1-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LFBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BNCOM1-LFBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BNCOM1-LFBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_BNCOM1-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BNCOM1-PSPNR.
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_BNCOM1_STR, 
LIFNR TYPE STRING,
LICHA TYPE STRING,
EKORG TYPE STRING,
AUART TYPE STRING,
AUTYP TYPE STRING,
LGNUM TYPE STRING,
BWLVS TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
WAGRP TYPE STRING,
MATKL TYPE STRING,
MTART TYPE STRING,
SHKZG TYPE STRING,
BWTTY TYPE STRING,
BWART TYPE STRING,
SOBKZ TYPE STRING,
UMMAT TYPE STRING,
UMWRK TYPE STRING,
UMCHA TYPE STRING,
UMLGO TYPE STRING,
UMSOK TYPE STRING,
PMATN TYPE STRING,
PWERK TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
KDEIN TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
BSTYP TYPE STRING,
BSART TYPE STRING,
AUFNR TYPE STRING,
POSNR TYPE STRING,
KZBEW TYPE STRING,
KZCLA TYPE STRING,
PRWRK TYPE STRING,
LFBEL TYPE STRING,
LFPOS TYPE STRING,
PSPNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BNCOM1_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_BNCOM1_STR-LIFNR sy-vline 
WA_BNCOM1_STR-LICHA sy-vline 
WA_BNCOM1_STR-EKORG sy-vline 
WA_BNCOM1_STR-AUART sy-vline 
WA_BNCOM1_STR-AUTYP sy-vline 
WA_BNCOM1_STR-LGNUM sy-vline 
WA_BNCOM1_STR-BWLVS sy-vline 
WA_BNCOM1_STR-MATNR sy-vline 
WA_BNCOM1_STR-WERKS sy-vline 
WA_BNCOM1_STR-LGORT sy-vline 
WA_BNCOM1_STR-WAGRP sy-vline 
WA_BNCOM1_STR-MATKL sy-vline 
WA_BNCOM1_STR-MTART sy-vline 
WA_BNCOM1_STR-SHKZG sy-vline 
WA_BNCOM1_STR-BWTTY sy-vline 
WA_BNCOM1_STR-BWART sy-vline 
WA_BNCOM1_STR-SOBKZ sy-vline 
WA_BNCOM1_STR-UMMAT sy-vline 
WA_BNCOM1_STR-UMWRK sy-vline 
WA_BNCOM1_STR-UMCHA sy-vline 
WA_BNCOM1_STR-UMLGO sy-vline 
WA_BNCOM1_STR-UMSOK sy-vline 
WA_BNCOM1_STR-PMATN sy-vline 
WA_BNCOM1_STR-PWERK sy-vline 
WA_BNCOM1_STR-KDAUF sy-vline 
WA_BNCOM1_STR-KDPOS sy-vline 
WA_BNCOM1_STR-KDEIN sy-vline 
WA_BNCOM1_STR-EBELN sy-vline 
WA_BNCOM1_STR-EBELP sy-vline 
WA_BNCOM1_STR-BSTYP sy-vline 
WA_BNCOM1_STR-BSART sy-vline 
WA_BNCOM1_STR-AUFNR sy-vline 
WA_BNCOM1_STR-POSNR sy-vline 
WA_BNCOM1_STR-KZBEW sy-vline 
WA_BNCOM1_STR-KZCLA sy-vline 
WA_BNCOM1_STR-PRWRK sy-vline 
WA_BNCOM1_STR-LFBEL sy-vline 
WA_BNCOM1_STR-LFPOS sy-vline 
WA_BNCOM1_STR-PSPNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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