ABAP Select data from SAP table LSO_PARTIC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LSO_PARTIC
*  INTO TABLE @DATA(IT_LSO_PARTIC2).
*--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_LSO_PARTIC INDEX 1 INTO DATA(WA_LSO_PARTIC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LSO_PARTIC>-MANDT = 1.
<LSO_PARTIC>-PLVAR = 1.
<LSO_PARTIC>-OTYPE = 1.
<LSO_PARTIC>-OBJID = 1.
<LSO_PARTIC>-INFTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LSO_PARTIC-RSIGN, sy-vline,
  WA_LSO_PARTIC-RELAT, sy-vline,
  WA_LSO_PARTIC-ISTAT, sy-vline,
  WA_LSO_PARTIC-PRIOX, sy-vline,
  WA_LSO_PARTIC-BEGDA, sy-vline,
  WA_LSO_PARTIC-ENDDA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LSO_PARTIC 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_LSO_PARTIC 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_LSO_PARTIC INTO WA_LSO_PARTIC.


*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 TPARTDOCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LSO_PARTIC-TPARTDOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LSO_PARTIC-TPARTDOCNO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field CREDITBELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LSO_PARTIC-CREDITBELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LSO_PARTIC-CREDITBELNR.
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_LSO_PARTIC_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
INFTY TYPE STRING,
RSIGN TYPE STRING,
RELAT TYPE STRING,
ISTAT TYPE STRING,
PRIOX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
REASN TYPE STRING,
HISTO TYPE STRING,
ITXNR TYPE STRING,
SCLAS TYPE STRING,
SOBID TYPE STRING,
TPARTDOCNO TYPE STRING,
MANZL TYPE STRING,
BUDAT TYPE STRING,
INTEX TYPE STRING,
KKOST TYPE STRING,
KWAER TYPE STRING,
REFDOCNO TYPE STRING,
REFDOCITEM TYPE STRING,
REFDOCSEQNR TYPE STRING,
CREDITBELNR TYPE STRING,
CREDITITEM TYPE STRING,
CREDITSEQNR TYPE STRING,
CURRI_TYPE TYPE STRING,
CURRI_ID TYPE STRING,
EXPID TYPE STRING,
LEARN_STATUS TYPE STRING,
ACCESS_COUNTER TYPE STRING,
TRACKING_STATUS TYPE STRING,
CONFIRMED TYPE STRING,
PASSED TYPE STRING,
FAILED TYPE STRING,
FOLLOW_UP TYPE STRING,
CAATR TYPE STRING,
PREVSCLAS TYPE STRING,
PREVSOBID TYPE STRING,
CP_TYPE TYPE STRING,
CP_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LSO_PARTIC_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_LSO_PARTIC_STR-MANDT sy-vline 
WA_LSO_PARTIC_STR-PLVAR sy-vline 
WA_LSO_PARTIC_STR-OTYPE sy-vline 
WA_LSO_PARTIC_STR-OBJID sy-vline 
WA_LSO_PARTIC_STR-INFTY sy-vline 
WA_LSO_PARTIC_STR-RSIGN sy-vline 
WA_LSO_PARTIC_STR-RELAT sy-vline 
WA_LSO_PARTIC_STR-ISTAT sy-vline 
WA_LSO_PARTIC_STR-PRIOX sy-vline 
WA_LSO_PARTIC_STR-BEGDA sy-vline 
WA_LSO_PARTIC_STR-ENDDA sy-vline 
WA_LSO_PARTIC_STR-VARYF sy-vline 
WA_LSO_PARTIC_STR-SEQNR sy-vline 
WA_LSO_PARTIC_STR-AEDTM sy-vline 
WA_LSO_PARTIC_STR-UNAME sy-vline 
WA_LSO_PARTIC_STR-REASN sy-vline 
WA_LSO_PARTIC_STR-HISTO sy-vline 
WA_LSO_PARTIC_STR-ITXNR sy-vline 
WA_LSO_PARTIC_STR-SCLAS sy-vline 
WA_LSO_PARTIC_STR-SOBID sy-vline 
WA_LSO_PARTIC_STR-TPARTDOCNO sy-vline 
WA_LSO_PARTIC_STR-MANZL sy-vline 
WA_LSO_PARTIC_STR-BUDAT sy-vline 
WA_LSO_PARTIC_STR-INTEX sy-vline 
WA_LSO_PARTIC_STR-KKOST sy-vline 
WA_LSO_PARTIC_STR-KWAER sy-vline 
WA_LSO_PARTIC_STR-REFDOCNO sy-vline 
WA_LSO_PARTIC_STR-REFDOCITEM sy-vline 
WA_LSO_PARTIC_STR-REFDOCSEQNR sy-vline 
WA_LSO_PARTIC_STR-CREDITBELNR sy-vline 
WA_LSO_PARTIC_STR-CREDITITEM sy-vline 
WA_LSO_PARTIC_STR-CREDITSEQNR sy-vline 
WA_LSO_PARTIC_STR-CURRI_TYPE sy-vline 
WA_LSO_PARTIC_STR-CURRI_ID sy-vline 
WA_LSO_PARTIC_STR-EXPID sy-vline 
WA_LSO_PARTIC_STR-LEARN_STATUS sy-vline 
WA_LSO_PARTIC_STR-ACCESS_COUNTER sy-vline 
WA_LSO_PARTIC_STR-TRACKING_STATUS sy-vline 
WA_LSO_PARTIC_STR-CONFIRMED sy-vline 
WA_LSO_PARTIC_STR-PASSED sy-vline 
WA_LSO_PARTIC_STR-FAILED sy-vline 
WA_LSO_PARTIC_STR-FOLLOW_UP sy-vline 
WA_LSO_PARTIC_STR-CAATR sy-vline 
WA_LSO_PARTIC_STR-PREVSCLAS sy-vline 
WA_LSO_PARTIC_STR-PREVSOBID sy-vline 
WA_LSO_PARTIC_STR-CP_TYPE sy-vline 
WA_LSO_PARTIC_STR-CP_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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