ABAP Select data from SAP table BAPILAYIT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPILAYIT
*  INTO TABLE @DATA(IT_BAPILAYIT2).
*--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_BAPILAYIT INDEX 1 INTO DATA(WA_BAPILAYIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPILAYIT>-LAYOUT = 1.
<BAPILAYIT>-AREA = 1.
<BAPILAYIT>-ITEM = 1.
<BAPILAYIT>-MATERIAL = 1.
<BAPILAYIT>-UNIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPILAYIT-SORTNR, sy-vline,
  WA_BAPILAYIT-MATTYPE, sy-vline,
  WA_BAPILAYIT-PARENT, sy-vline,
  WA_BAPILAYIT-UNIT_ISO, sy-vline,
  WA_BAPILAYIT-ORDER_NUMBER, sy-vline,
  WA_BAPILAYIT-PICTURE_NUMBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPILAYIT 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_BAPILAYIT 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_BAPILAYIT INTO WA_BAPILAYIT.


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

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

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

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

*Conversion exit MATNL, internal->external for field MATERIAL_EXTERNAL
CALL FUNCTION 'CONVERSION_EXIT_MATNL_OUTPUT'
  EXPORTING
    input =                      WA_BAPILAYIT-MATERIAL_EXTERNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPILAYIT-MATERIAL_EXTERNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNW, internal->external for field MATERIAL_VERSION
CALL FUNCTION 'CONVERSION_EXIT_MATNW_OUTPUT'
  EXPORTING
    input =                      WA_BAPILAYIT-MATERIAL_VERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPILAYIT-MATERIAL_VERSION.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field ORDER_NUMBER_LONG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPILAYIT-ORDER_NUMBER_LONG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPILAYIT-ORDER_NUMBER_LONG.
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_BAPILAYIT_STR, 
LAYOUT TYPE STRING,
AREA TYPE STRING,
ITEM TYPE STRING,
MATERIAL TYPE STRING,
UNIT TYPE STRING,
SORTNR TYPE STRING,
MATTYPE TYPE STRING,
PARENT TYPE STRING,
UNIT_ISO TYPE STRING,
ORDER_NUMBER TYPE STRING,
PICTURE_NUMBER TYPE STRING,
MATERIAL_EXTERNAL TYPE STRING,
MATERIAL_GUID TYPE STRING,
MATERIAL_VERSION TYPE STRING,
CONFIGURABLE TYPE STRING,
MATERIAL_LONG TYPE STRING,
ORDER_NUMBER_LONG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPILAYIT_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_BAPILAYIT_STR-LAYOUT sy-vline 
WA_BAPILAYIT_STR-AREA sy-vline 
WA_BAPILAYIT_STR-ITEM sy-vline 
WA_BAPILAYIT_STR-MATERIAL sy-vline 
WA_BAPILAYIT_STR-UNIT sy-vline 
WA_BAPILAYIT_STR-SORTNR sy-vline 
WA_BAPILAYIT_STR-MATTYPE sy-vline 
WA_BAPILAYIT_STR-PARENT sy-vline 
WA_BAPILAYIT_STR-UNIT_ISO sy-vline 
WA_BAPILAYIT_STR-ORDER_NUMBER sy-vline 
WA_BAPILAYIT_STR-PICTURE_NUMBER sy-vline 
WA_BAPILAYIT_STR-MATERIAL_EXTERNAL sy-vline 
WA_BAPILAYIT_STR-MATERIAL_GUID sy-vline 
WA_BAPILAYIT_STR-MATERIAL_VERSION sy-vline 
WA_BAPILAYIT_STR-CONFIGURABLE sy-vline 
WA_BAPILAYIT_STR-MATERIAL_LONG sy-vline 
WA_BAPILAYIT_STR-ORDER_NUMBER_LONG sy-vline      INTO ld_text SEPARATED BY SPACE.

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