ABAP Select data from SAP table P03_LZE18_L into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P03_LZE18_L 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_LZE18_L. 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_LZE18_L 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_LZE18_L TYPE STANDARD TABLE OF P03_LZE18_L,
      WA_P03_LZE18_L TYPE P03_LZE18_L,
      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_LZE18_L> TYPE P03_LZE18_L.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P03_LZE18_L.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P03_LZE18_L
  INTO TABLE IT_P03_LZE18_L.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P03_LZE18_L
*  INTO TABLE @DATA(IT_P03_LZE18_L2).
*--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_LZE18_L INDEX 1 INTO DATA(WA_P03_LZE18_L2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P03_LZE18_L ASSIGNING <P03_LZE18_L>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P03_LZE18_L>-MANDT = 1.
<P03_LZE18_L>-PERNR = 1.
<P03_LZE18_L>-REVTY = 1.
<P03_LZE18_L>-BEGDA = 1.
<P03_LZE18_L>-ENDDA = 1.

ENDLOOP.

LOOP AT IT_P03_LZE18_L INTO WA_P03_LZE18_L.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P03_LZE18_L-SEQNR, sy-vline,
  WA_P03_LZE18_L-SETYP, sy-vline,
  WA_P03_LZE18_L-READY, sy-vline,
  WA_P03_LZE18_L-SRTZA, sy-vline,
  WA_P03_LZE18_L-EMETH, sy-vline,
  WA_P03_LZE18_L-LZTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P03_LZE18_L 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_LZE18_L 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_LZE18_L INTO WA_P03_LZE18_L.


*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_LZE18_L_STR, 
MANDT TYPE STRING,
PERNR TYPE STRING,
REVTY TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
SEQNR TYPE STRING,
SETYP TYPE STRING,
READY TYPE STRING,
SRTZA TYPE STRING,
EMETH TYPE STRING,
LZTYP TYPE STRING,
UNAME TYPE STRING,
DATUM TYPE STRING,
UZEIT TYPE STRING,
PGMID TYPE STRING,
EPRO2 TYPE STRING,
ESVGR TYPE STRING,
EUSVA TYPE STRING,
WOBD0 TYPE STRING,
ZOBD0 TYPE STRING,
EDTNR TYPE STRING,
ESANR TYPE STRING,
ESANI TYPE STRING,
LFVER TYPE STRING,
TFDAT TYPE STRING,
TFTIM TYPE STRING,
FEHL1 TYPE STRING,
FEHL2 TYPE STRING,
FEHL3 TYPE STRING,
FEHL4 TYPE STRING,
FEHL5 TYPE STRING,
ESTAT TYPE STRING,
ANZA0 TYPE STRING,
TTE18 TYPE STRING,
REFNR TYPE STRING,
AUSVL TYPE STRING,
AUSVG TYPE STRING,
ANNNA TYPE STRING,
ANVNA TYPE STRING,
ANTIT TYPE STRING,
GESCH TYPE STRING,
ANADR TYPE STRING,
ANLKZ TYPE STRING,
ANPLZ TYPE STRING,
ANORT TYPE STRING,
ANNUM TYPE STRING,
ANFZA TYPE STRING,
LOHNB TYPE STRING,
AGNUM TYPE STRING,
AGFZA TYPE STRING,
AGDVR TYPE STRING,
AGNAM TYPE STRING,
AGTIT TYPE STRING,
AGADR TYPE STRING,
AGLKZ TYPE STRING,
AGZIP TYPE STRING,
AGORT TYPE STRING,
LBTEL TYPE STRING,
LBFAX TYPE STRING,
LVNUM TYPE STRING,
LVFZA TYPE STRING,
LVDVR TYPE STRING,
ARTE0 TYPE STRING,
WAERS TYPE STRING,
KZ341 TYPE STRING,
KZ344 TYPE STRING,
KZ270 TYPE STRING,
KZ271 TYPE STRING,
INPER TYPE STRING,
REFN0 TYPE STRING,
BACTI TYPE STRING,
BACTI_ICON TYPE STRING,
BACTI_TXT TYPE STRING,
ARTE0_TXT TYPE STRING,
GESCH_TXT TYPE STRING,
LOHNB_TXT TYPE STRING,
LBNAM TYPE STRING,
LBAD1 TYPE STRING,
LBAD2 TYPE STRING,
LBAD3 TYPE STRING,
LBAD4 TYPE STRING,
LVFZA_TXT TYPE STRING,
AGFZA_TXT TYPE STRING,
ANFZA_TXT TYPE STRING,
SETYP_TXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P03_LZE18_L_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_LZE18_L_STR-MANDT sy-vline 
WA_P03_LZE18_L_STR-PERNR sy-vline 
WA_P03_LZE18_L_STR-REVTY sy-vline 
WA_P03_LZE18_L_STR-BEGDA sy-vline 
WA_P03_LZE18_L_STR-ENDDA sy-vline 
WA_P03_LZE18_L_STR-SEQNR sy-vline 
WA_P03_LZE18_L_STR-SETYP sy-vline 
WA_P03_LZE18_L_STR-READY sy-vline 
WA_P03_LZE18_L_STR-SRTZA sy-vline 
WA_P03_LZE18_L_STR-EMETH sy-vline 
WA_P03_LZE18_L_STR-LZTYP sy-vline 
WA_P03_LZE18_L_STR-UNAME sy-vline 
WA_P03_LZE18_L_STR-DATUM sy-vline 
WA_P03_LZE18_L_STR-UZEIT sy-vline 
WA_P03_LZE18_L_STR-PGMID sy-vline 
WA_P03_LZE18_L_STR-EPRO2 sy-vline 
WA_P03_LZE18_L_STR-ESVGR sy-vline 
WA_P03_LZE18_L_STR-EUSVA sy-vline 
WA_P03_LZE18_L_STR-WOBD0 sy-vline 
WA_P03_LZE18_L_STR-ZOBD0 sy-vline 
WA_P03_LZE18_L_STR-EDTNR sy-vline 
WA_P03_LZE18_L_STR-ESANR sy-vline 
WA_P03_LZE18_L_STR-ESANI sy-vline 
WA_P03_LZE18_L_STR-LFVER sy-vline 
WA_P03_LZE18_L_STR-TFDAT sy-vline 
WA_P03_LZE18_L_STR-TFTIM sy-vline 
WA_P03_LZE18_L_STR-FEHL1 sy-vline 
WA_P03_LZE18_L_STR-FEHL2 sy-vline 
WA_P03_LZE18_L_STR-FEHL3 sy-vline 
WA_P03_LZE18_L_STR-FEHL4 sy-vline 
WA_P03_LZE18_L_STR-FEHL5 sy-vline 
WA_P03_LZE18_L_STR-ESTAT sy-vline 
WA_P03_LZE18_L_STR-ANZA0 sy-vline 
WA_P03_LZE18_L_STR-TTE18 sy-vline 
WA_P03_LZE18_L_STR-REFNR sy-vline 
WA_P03_LZE18_L_STR-AUSVL sy-vline 
WA_P03_LZE18_L_STR-AUSVG sy-vline 
WA_P03_LZE18_L_STR-ANNNA sy-vline 
WA_P03_LZE18_L_STR-ANVNA sy-vline 
WA_P03_LZE18_L_STR-ANTIT sy-vline 
WA_P03_LZE18_L_STR-GESCH sy-vline 
WA_P03_LZE18_L_STR-ANADR sy-vline 
WA_P03_LZE18_L_STR-ANLKZ sy-vline 
WA_P03_LZE18_L_STR-ANPLZ sy-vline 
WA_P03_LZE18_L_STR-ANORT sy-vline 
WA_P03_LZE18_L_STR-ANNUM sy-vline 
WA_P03_LZE18_L_STR-ANFZA sy-vline 
WA_P03_LZE18_L_STR-LOHNB sy-vline 
WA_P03_LZE18_L_STR-AGNUM sy-vline 
WA_P03_LZE18_L_STR-AGFZA sy-vline 
WA_P03_LZE18_L_STR-AGDVR sy-vline 
WA_P03_LZE18_L_STR-AGNAM sy-vline 
WA_P03_LZE18_L_STR-AGTIT sy-vline 
WA_P03_LZE18_L_STR-AGADR sy-vline 
WA_P03_LZE18_L_STR-AGLKZ sy-vline 
WA_P03_LZE18_L_STR-AGZIP sy-vline 
WA_P03_LZE18_L_STR-AGORT sy-vline 
WA_P03_LZE18_L_STR-LBTEL sy-vline 
WA_P03_LZE18_L_STR-LBFAX sy-vline 
WA_P03_LZE18_L_STR-LVNUM sy-vline 
WA_P03_LZE18_L_STR-LVFZA sy-vline 
WA_P03_LZE18_L_STR-LVDVR sy-vline 
WA_P03_LZE18_L_STR-ARTE0 sy-vline 
WA_P03_LZE18_L_STR-WAERS sy-vline 
WA_P03_LZE18_L_STR-KZ341 sy-vline 
WA_P03_LZE18_L_STR-KZ344 sy-vline 
WA_P03_LZE18_L_STR-KZ270 sy-vline 
WA_P03_LZE18_L_STR-KZ271 sy-vline 
WA_P03_LZE18_L_STR-INPER sy-vline 
WA_P03_LZE18_L_STR-REFN0 sy-vline 
WA_P03_LZE18_L_STR-BACTI sy-vline 
WA_P03_LZE18_L_STR-BACTI_ICON sy-vline 
WA_P03_LZE18_L_STR-BACTI_TXT sy-vline 
WA_P03_LZE18_L_STR-ARTE0_TXT sy-vline 
WA_P03_LZE18_L_STR-GESCH_TXT sy-vline 
WA_P03_LZE18_L_STR-LOHNB_TXT sy-vline 
WA_P03_LZE18_L_STR-LBNAM sy-vline 
WA_P03_LZE18_L_STR-LBAD1 sy-vline 
WA_P03_LZE18_L_STR-LBAD2 sy-vline 
WA_P03_LZE18_L_STR-LBAD3 sy-vline 
WA_P03_LZE18_L_STR-LBAD4 sy-vline 
WA_P03_LZE18_L_STR-LVFZA_TXT sy-vline 
WA_P03_LZE18_L_STR-AGFZA_TXT sy-vline 
WA_P03_LZE18_L_STR-ANFZA_TXT sy-vline 
WA_P03_LZE18_L_STR-SETYP_TXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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