ABAP Select data from SAP table NALIPA into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP NALIPA 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 NALIPA. 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 NALIPA 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_NALIPA TYPE STANDARD TABLE OF NALIPA,
      WA_NALIPA TYPE NALIPA,
      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: <NALIPA> TYPE NALIPA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM NALIPA
*  INTO TABLE @DATA(IT_NALIPA2).
*--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_NALIPA INDEX 1 INTO DATA(WA_NALIPA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<NALIPA>-TABIX = 1.
<NALIPA>-COLOR = 1.
<NALIPA>-SELFL = 1.
<NALIPA>-PABNUM = 1.
<NALIPA>-KSCHL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_NALIPA-NACHA, sy-vline,
  WA_NALIPA-PARVW, sy-vline,
  WA_NALIPA-WERKS, sy-vline,
  WA_NALIPA-LIFNR, sy-vline,
  WA_NALIPA-PABPRF, sy-vline,
  WA_NALIPA-PABNPL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_NALIPA 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_NALIPA 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_NALIPA INTO WA_NALIPA.


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

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

*Conversion exit ALPHA, internal->external for field PABNPL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_NALIPA-PABNPL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NALIPA-PABNPL.
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_NALIPA_STR, 
TABIX TYPE STRING,
COLOR TYPE STRING,
SELFL TYPE STRING,
PABNUM TYPE STRING,
KSCHL TYPE STRING,
NACHA TYPE STRING,
PARVW TYPE STRING,
WERKS TYPE STRING,
LIFNR TYPE STRING,
PABPRF TYPE STRING,
PABNPL TYPE STRING,
PABLUZK TYPE STRING,
PABLDTK TYPE STRING,
VSTAT TYPE STRING,
ANZAL TYPE STRING,
VSZTP TYPE STRING,
MANUE TYPE STRING,
VSDAT TYPE STRING,
VSURA TYPE STRING,
VSURB TYPE STRING,
DATVR TYPE STRING,
UHRVR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_NALIPA_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_NALIPA_STR-TABIX sy-vline 
WA_NALIPA_STR-COLOR sy-vline 
WA_NALIPA_STR-SELFL sy-vline 
WA_NALIPA_STR-PABNUM sy-vline 
WA_NALIPA_STR-KSCHL sy-vline 
WA_NALIPA_STR-NACHA sy-vline 
WA_NALIPA_STR-PARVW sy-vline 
WA_NALIPA_STR-WERKS sy-vline 
WA_NALIPA_STR-LIFNR sy-vline 
WA_NALIPA_STR-PABPRF sy-vline 
WA_NALIPA_STR-PABNPL sy-vline 
WA_NALIPA_STR-PABLUZK sy-vline 
WA_NALIPA_STR-PABLDTK sy-vline 
WA_NALIPA_STR-VSTAT sy-vline 
WA_NALIPA_STR-ANZAL sy-vline 
WA_NALIPA_STR-VSZTP sy-vline 
WA_NALIPA_STR-MANUE sy-vline 
WA_NALIPA_STR-VSDAT sy-vline 
WA_NALIPA_STR-VSURA sy-vline 
WA_NALIPA_STR-VSURB sy-vline 
WA_NALIPA_STR-DATVR sy-vline 
WA_NALIPA_STR-UHRVR sy-vline      INTO ld_text SEPARATED BY SPACE.

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