ABAP Select data from SAP table LUBUI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LUBUI
*  INTO TABLE @DATA(IT_LUBUI2).
*--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_LUBUI INDEX 1 INTO DATA(WA_LUBUI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LUBUI>-BWLVS = 1.
<LUBUI>-TBPRI = 1.
<LUBUI>-MATN1 = 1.
<LUBUI>-WERK1 = 1.
<LUBUI>-LGOR1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LUBUI-BSTQ1, sy-vline,
  WA_LUBUI-CHRG1, sy-vline,
  WA_LUBUI-SOKZ1, sy-vline,
  WA_LUBUI-SONR1, sy-vline,
  WA_LUBUI-MATN2, sy-vline,
  WA_LUBUI-WERK2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LUBUI 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_LUBUI 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_LUBUI INTO WA_LUBUI.


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

*Conversion exit ALPHA, internal->external for field SONR1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LUBUI-SONR1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LUBUI-SONR1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATN2
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_LUBUI-MATN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LUBUI-MATN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SONR2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LUBUI-SONR2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LUBUI-SONR2.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field ALTM1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LUBUI-ALTM1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LUBUI-ALTM1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ALTM2
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LUBUI-ALTM2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LUBUI-ALTM2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_LUBUI-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LUBUI-MJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field /CWM/VEMEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LUBUI-/CWM/VEMEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LUBUI-/CWM/VEMEH.
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_LUBUI_STR, 
BWLVS TYPE STRING,
TBPRI TYPE STRING,
MATN1 TYPE STRING,
WERK1 TYPE STRING,
LGOR1 TYPE STRING,
BSTQ1 TYPE STRING,
CHRG1 TYPE STRING,
SOKZ1 TYPE STRING,
SONR1 TYPE STRING,
MATN2 TYPE STRING,
WERK2 TYPE STRING,
LGOR2 TYPE STRING,
BSTQ2 TYPE STRING,
CHRG2 TYPE STRING,
SOKZ2 TYPE STRING,
SONR2 TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
ALTM1 TYPE STRING,
ALTM2 TYPE STRING,
MJAHR TYPE STRING,
MBLNR TYPE STRING,
MBPOS TYPE STRING,
WENUM TYPE STRING,
BWART TYPE STRING,
QPLOS TYPE STRING,
QPLOA TYPE STRING,
SGT_SCAT TYPE STRING,
SGT_UMSCAT TYPE STRING,
/CWM/XCWMAT TYPE STRING,
/CWM/TGT_QTY TYPE STRING,
/CWM/TGT_UOM TYPE STRING,
/CWM/HU_OLD_QTY TYPE STRING,
/CWM/VEMEH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LUBUI_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_LUBUI_STR-BWLVS sy-vline 
WA_LUBUI_STR-TBPRI sy-vline 
WA_LUBUI_STR-MATN1 sy-vline 
WA_LUBUI_STR-WERK1 sy-vline 
WA_LUBUI_STR-LGOR1 sy-vline 
WA_LUBUI_STR-BSTQ1 sy-vline 
WA_LUBUI_STR-CHRG1 sy-vline 
WA_LUBUI_STR-SOKZ1 sy-vline 
WA_LUBUI_STR-SONR1 sy-vline 
WA_LUBUI_STR-MATN2 sy-vline 
WA_LUBUI_STR-WERK2 sy-vline 
WA_LUBUI_STR-LGOR2 sy-vline 
WA_LUBUI_STR-BSTQ2 sy-vline 
WA_LUBUI_STR-CHRG2 sy-vline 
WA_LUBUI_STR-SOKZ2 sy-vline 
WA_LUBUI_STR-SONR2 sy-vline 
WA_LUBUI_STR-MENGE sy-vline 
WA_LUBUI_STR-MEINS sy-vline 
WA_LUBUI_STR-ALTM1 sy-vline 
WA_LUBUI_STR-ALTM2 sy-vline 
WA_LUBUI_STR-MJAHR sy-vline 
WA_LUBUI_STR-MBLNR sy-vline 
WA_LUBUI_STR-MBPOS sy-vline 
WA_LUBUI_STR-WENUM sy-vline 
WA_LUBUI_STR-BWART sy-vline 
WA_LUBUI_STR-QPLOS sy-vline 
WA_LUBUI_STR-QPLOA sy-vline 
WA_LUBUI_STR-SGT_SCAT sy-vline 
WA_LUBUI_STR-SGT_UMSCAT sy-vline 
WA_LUBUI_STR-/CWM/XCWMAT sy-vline 
WA_LUBUI_STR-/CWM/TGT_QTY sy-vline 
WA_LUBUI_STR-/CWM/TGT_UOM sy-vline 
WA_LUBUI_STR-/CWM/HU_OLD_QTY sy-vline 
WA_LUBUI_STR-/CWM/VEMEH sy-vline      INTO ld_text SEPARATED BY SPACE.

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