ABAP Select data from SAP table P03_LZ2I1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P03_LZ2I1 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 P03_LZ2I1. 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 P03_LZ2I1 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_P03_LZ2I1 TYPE STANDARD TABLE OF P03_LZ2I1,
      WA_P03_LZ2I1 TYPE P03_LZ2I1,
      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: <P03_LZ2I1> TYPE P03_LZ2I1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P03_LZ2I1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P03_LZ2I1
  INTO TABLE IT_P03_LZ2I1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P03_LZ2I1
*  INTO TABLE @DATA(IT_P03_LZ2I12).
*--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_P03_LZ2I1 INDEX 1 INTO DATA(WA_P03_LZ2I12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P03_LZ2I1 ASSIGNING <P03_LZ2I1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P03_LZ2I1>-AUSVL = 1.
<P03_LZ2I1>-AUSVG = 1.
<P03_LZ2I1>-DNNNA = 1.
<P03_LZ2I1>-DNVNA = 1.
<P03_LZ2I1>-ASVGR = 1.

ENDLOOP.

LOOP AT IT_P03_LZ2I1 INTO WA_P03_LZ2I1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P03_LZ2I1-AUSVA, sy-vline,
  WA_P03_LZ2I1-LOHNB, sy-vline,
  WA_P03_LZ2I1-ASVG1, sy-vline,
  WA_P03_LZ2I1-E3AUS, sy-vline,
  WA_P03_LZ2I1-E9AUS, sy-vline,
  WA_P03_LZ2I1-DGSV1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P03_LZ2I1 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_P03_LZ2I1 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_P03_LZ2I1 INTO WA_P03_LZ2I1.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_P03_LZ2I1_STR, 
AUSVL TYPE STRING,
AUSVG TYPE STRING,
DNNNA TYPE STRING,
DNVNA TYPE STRING,
ASVGR TYPE STRING,
AUSVA TYPE STRING,
LOHNB TYPE STRING,
ASVG1 TYPE STRING,
E3AUS TYPE STRING,
E9AUS TYPE STRING,
DGSV1 TYPE STRING,
DGNAM TYPE STRING,
DGFZA TYPE STRING,
DGNUM TYPE STRING,
LBTEL TYPE STRING,
TETG0 TYPE STRING,
MVBEG TYPE STRING,
MVEND TYPE STRING,
WAERS TYPE STRING,
BGAL0 TYPE STRING,
BGSZ0 TYPE STRING,
TEBG0 TYPE STRING,
MVBG0 TYPE STRING,
MVBE0 TYPE STRING,
INPER TYPE STRING,
REFN0 TYPE STRING,
UDVSV TYPE STRING,
BKMV0 TYPE STRING,
KMVI0 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P03_LZ2I1_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_P03_LZ2I1_STR-AUSVL sy-vline 
WA_P03_LZ2I1_STR-AUSVG sy-vline 
WA_P03_LZ2I1_STR-DNNNA sy-vline 
WA_P03_LZ2I1_STR-DNVNA sy-vline 
WA_P03_LZ2I1_STR-ASVGR sy-vline 
WA_P03_LZ2I1_STR-AUSVA sy-vline 
WA_P03_LZ2I1_STR-LOHNB sy-vline 
WA_P03_LZ2I1_STR-ASVG1 sy-vline 
WA_P03_LZ2I1_STR-E3AUS sy-vline 
WA_P03_LZ2I1_STR-E9AUS sy-vline 
WA_P03_LZ2I1_STR-DGSV1 sy-vline 
WA_P03_LZ2I1_STR-DGNAM sy-vline 
WA_P03_LZ2I1_STR-DGFZA sy-vline 
WA_P03_LZ2I1_STR-DGNUM sy-vline 
WA_P03_LZ2I1_STR-LBTEL sy-vline 
WA_P03_LZ2I1_STR-TETG0 sy-vline 
WA_P03_LZ2I1_STR-MVBEG sy-vline 
WA_P03_LZ2I1_STR-MVEND sy-vline 
WA_P03_LZ2I1_STR-WAERS sy-vline 
WA_P03_LZ2I1_STR-BGAL0 sy-vline 
WA_P03_LZ2I1_STR-BGSZ0 sy-vline 
WA_P03_LZ2I1_STR-TEBG0 sy-vline 
WA_P03_LZ2I1_STR-MVBG0 sy-vline 
WA_P03_LZ2I1_STR-MVBE0 sy-vline 
WA_P03_LZ2I1_STR-INPER sy-vline 
WA_P03_LZ2I1_STR-REFN0 sy-vline 
WA_P03_LZ2I1_STR-UDVSV sy-vline 
WA_P03_LZ2I1_STR-BKMV0 sy-vline 
WA_P03_LZ2I1_STR-KMVI0 sy-vline      INTO ld_text SEPARATED BY SPACE.

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