ABAP Select data from SAP table P05_LT_NLSIR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P05_LT_NLSIR 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 P05_LT_NLSIR. 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 P05_LT_NLSIR 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_P05_LT_NLSIR TYPE STANDARD TABLE OF P05_LT_NLSIR,
      WA_P05_LT_NLSIR TYPE P05_LT_NLSIR,
      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: <P05_LT_NLSIR> TYPE P05_LT_NLSIR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P05_LT_NLSIR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P05_LT_NLSIR
  INTO TABLE IT_P05_LT_NLSIR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P05_LT_NLSIR
*  INTO TABLE @DATA(IT_P05_LT_NLSIR2).
*--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_P05_LT_NLSIR INDEX 1 INTO DATA(WA_P05_LT_NLSIR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P05_LT_NLSIR ASSIGNING <P05_LT_NLSIR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P05_LT_NLSIR>-BEGDA = 1.
<P05_LT_NLSIR>-ENDDA = 1.
<P05_LT_NLSIR>-SIRHE = 1.
<P05_LT_NLSIR>-SIREE = 1.
<P05_LT_NLSIR>-ARBGK = 1.

ENDLOOP.

LOOP AT IT_P05_LT_NLSIR INTO WA_P05_LT_NLSIR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P05_LT_NLSIR-SIBEG, sy-vline,
  WA_P05_LT_NLSIR-SIEND, sy-vline,
  WA_P05_LT_NLSIR-SDBEG, sy-vline,
  WA_P05_LT_NLSIR-SDEND, sy-vline,
  WA_P05_LT_NLSIR-STAT2, sy-vline,
  WA_P05_LT_NLSIR-JUPER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P05_LT_NLSIR 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_P05_LT_NLSIR 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_P05_LT_NLSIR INTO WA_P05_LT_NLSIR.


*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_P05_LT_NLSIR_STR, 
BEGDA TYPE STRING,
ENDDA TYPE STRING,
SIRHE TYPE STRING,
SIREE TYPE STRING,
ARBGK TYPE STRING,
SIBEG TYPE STRING,
SIEND TYPE STRING,
SDBEG TYPE STRING,
SDEND TYPE STRING,
STAT2 TYPE STRING,
JUPER TYPE STRING,
WOSTD TYPE STRING,
NDAYS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P05_LT_NLSIR_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_P05_LT_NLSIR_STR-BEGDA sy-vline 
WA_P05_LT_NLSIR_STR-ENDDA sy-vline 
WA_P05_LT_NLSIR_STR-SIRHE sy-vline 
WA_P05_LT_NLSIR_STR-SIREE sy-vline 
WA_P05_LT_NLSIR_STR-ARBGK sy-vline 
WA_P05_LT_NLSIR_STR-SIBEG sy-vline 
WA_P05_LT_NLSIR_STR-SIEND sy-vline 
WA_P05_LT_NLSIR_STR-SDBEG sy-vline 
WA_P05_LT_NLSIR_STR-SDEND sy-vline 
WA_P05_LT_NLSIR_STR-STAT2 sy-vline 
WA_P05_LT_NLSIR_STR-JUPER sy-vline 
WA_P05_LT_NLSIR_STR-WOSTD sy-vline 
WA_P05_LT_NLSIR_STR-NDAYS sy-vline      INTO ld_text SEPARATED BY SPACE.

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