ABAP Select data from SAP table LSER0002 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 LSER0002 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 LSER0002. 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 LSER0002 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_LSER0002 TYPE STANDARD TABLE OF LSER0002,
      WA_LSER0002 TYPE LSER0002,
      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: <LSER0002> TYPE LSER0002.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_LSER0002.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM LSER0002
  INTO TABLE IT_LSER0002.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LSER0002
*  INTO TABLE @DATA(IT_LSER00022).
*--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_LSER0002 INDEX 1 INTO DATA(WA_LSER00022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_LSER0002 ASSIGNING <LSER0002>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LSER0002>-POSNR = 1.
<LSER0002>-MATNR = 1.
<LSER0002>-CHARG = 1.
<LSER0002>-WERKS = 1.
<LSER0002>-LFIMG = 1.

ENDLOOP.

LOOP AT IT_LSER0002 INTO WA_LSER0002.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LSER0002-MEINS, sy-vline,
  WA_LSER0002-KCMENG, sy-vline,
  WA_LSER0002-UECHA, sy-vline,
  WA_LSER0002-SERAIL, sy-vline,
  WA_LSER0002-ANZSN, sy-vline,
  WA_LSER0002-SOLSN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LSER0002 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_LSER0002 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_LSER0002 INTO WA_LSER0002.


*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 MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_LSER0002-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LSER0002-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LSER0002-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LSER0002-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VGBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LSER0002-VGBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LSER0002-VGBEL.
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_LSER0002_STR, 
POSNR TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
WERKS TYPE STRING,
LFIMG TYPE STRING,
MEINS TYPE STRING,
KCMENG TYPE STRING,
UECHA TYPE STRING,
SERAIL TYPE STRING,
ANZSN TYPE STRING,
SOLSN TYPE STRING,
BWART TYPE STRING,
CUOBJ TYPE STRING,
HUPOS TYPE STRING,
LGMNG TYPE STRING,
KZBEW TYPE STRING,
VGBEL TYPE STRING,
VGPOS TYPE STRING,
VGTYP TYPE STRING,
LVSTA TYPE STRING,
KOSTA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LSER0002_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_LSER0002_STR-POSNR sy-vline 
WA_LSER0002_STR-MATNR sy-vline 
WA_LSER0002_STR-CHARG sy-vline 
WA_LSER0002_STR-WERKS sy-vline 
WA_LSER0002_STR-LFIMG sy-vline 
WA_LSER0002_STR-MEINS sy-vline 
WA_LSER0002_STR-KCMENG sy-vline 
WA_LSER0002_STR-UECHA sy-vline 
WA_LSER0002_STR-SERAIL sy-vline 
WA_LSER0002_STR-ANZSN sy-vline 
WA_LSER0002_STR-SOLSN sy-vline 
WA_LSER0002_STR-BWART sy-vline 
WA_LSER0002_STR-CUOBJ sy-vline 
WA_LSER0002_STR-HUPOS sy-vline 
WA_LSER0002_STR-LGMNG sy-vline 
WA_LSER0002_STR-KZBEW sy-vline 
WA_LSER0002_STR-VGBEL sy-vline 
WA_LSER0002_STR-VGPOS sy-vline 
WA_LSER0002_STR-VGTYP sy-vline 
WA_LSER0002_STR-LVSTA sy-vline 
WA_LSER0002_STR-KOSTA sy-vline      INTO ld_text SEPARATED BY SPACE.

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