ABAP Select data from SAP table PLM_CLASS_SEARCH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PLM_CLASS_SEARCH
*  INTO TABLE @DATA(IT_PLM_CLASS_SEARCH2).
*--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_PLM_CLASS_SEARCH INDEX 1 INTO DATA(WA_PLM_CLASS_SEARCH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PLM_CLASS_SEARCH>-PARENT = 1.
<PLM_CLASS_SEARCH>-OBJKEY = 1.
<PLM_CLASS_SEARCH>-OBJTYPE = 1.
<PLM_CLASS_SEARCH>-LOGSYS = 1.
<PLM_CLASS_SEARCH>-TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PLM_CLASS_SEARCH-POSI, sy-vline,
  WA_PLM_CLASS_SEARCH-TIMESTAMP, sy-vline,
  WA_PLM_CLASS_SEARCH-MANDT, sy-vline,
  WA_PLM_CLASS_SEARCH-CLINT, sy-vline,
  WA_PLM_CLASS_SEARCH-KLART, sy-vline,
  WA_PLM_CLASS_SEARCH-CLASS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PLM_CLASS_SEARCH 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_PLM_CLASS_SEARCH 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_PLM_CLASS_SEARCH INTO WA_PLM_CLASS_SEARCH.


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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PLM_CLASS_SEARCH-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLM_CLASS_SEARCH-MEINS.
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_PLM_CLASS_SEARCH_STR, 
PARENT TYPE STRING,
OBJKEY TYPE STRING,
OBJTYPE TYPE STRING,
LOGSYS TYPE STRING,
TEXT TYPE STRING,
POSI TYPE STRING,
TIMESTAMP TYPE STRING,
MANDT TYPE STRING,
CLINT TYPE STRING,
KLART TYPE STRING,
CLASS TYPE STRING,
STATU TYPE STRING,
KLAGR TYPE STRING,
BGRSE TYPE STRING,
BGRKL TYPE STRING,
BGRKP TYPE STRING,
ANAME TYPE STRING,
ADATU TYPE STRING,
VNAME TYPE STRING,
VDATU TYPE STRING,
VONDT TYPE STRING,
BISDT TYPE STRING,
ANZUO TYPE STRING,
PRAUS TYPE STRING,
SICHT TYPE STRING,
DOKNR TYPE STRING,
DOKAR TYPE STRING,
DOKTL TYPE STRING,
DOKVR TYPE STRING,
DINKZ TYPE STRING,
NNORM TYPE STRING,
NORMN TYPE STRING,
NORMB TYPE STRING,
NRMT1 TYPE STRING,
NRMT2 TYPE STRING,
AUSGD TYPE STRING,
VERSD TYPE STRING,
VERSI TYPE STRING,
LEIST TYPE STRING,
VERWE TYPE STRING,
SPART TYPE STRING,
LREF3 TYPE STRING,
WWSKZ TYPE STRING,
WWSSI TYPE STRING,
POTPR TYPE STRING,
CLOBK TYPE STRING,
CLMUL TYPE STRING,
CVIEW TYPE STRING,
DISST TYPE STRING,
MEINS TYPE STRING,
CLMOD TYPE STRING,
VWSTL TYPE STRING,
VWPLA TYPE STRING,
CLALT TYPE STRING,
LBREI TYPE STRING,
BNAME TYPE STRING,
MAXBL TYPE STRING,
KNOBJ TYPE STRING,
LOCLA TYPE STRING,
KATALOG TYPE STRING,
KDOKAZ TYPE STRING,
GENRKZ TYPE STRING,
LASTCHANGEDDATETIME TYPE STRING,
KLSBEZ TYPE STRING,
KLARTDESC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PLM_CLASS_SEARCH_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_PLM_CLASS_SEARCH_STR-PARENT sy-vline 
WA_PLM_CLASS_SEARCH_STR-OBJKEY sy-vline 
WA_PLM_CLASS_SEARCH_STR-OBJTYPE sy-vline 
WA_PLM_CLASS_SEARCH_STR-LOGSYS sy-vline 
WA_PLM_CLASS_SEARCH_STR-TEXT sy-vline 
WA_PLM_CLASS_SEARCH_STR-POSI sy-vline 
WA_PLM_CLASS_SEARCH_STR-TIMESTAMP sy-vline 
WA_PLM_CLASS_SEARCH_STR-MANDT sy-vline 
WA_PLM_CLASS_SEARCH_STR-CLINT sy-vline 
WA_PLM_CLASS_SEARCH_STR-KLART sy-vline 
WA_PLM_CLASS_SEARCH_STR-CLASS sy-vline 
WA_PLM_CLASS_SEARCH_STR-STATU sy-vline 
WA_PLM_CLASS_SEARCH_STR-KLAGR sy-vline 
WA_PLM_CLASS_SEARCH_STR-BGRSE sy-vline 
WA_PLM_CLASS_SEARCH_STR-BGRKL sy-vline 
WA_PLM_CLASS_SEARCH_STR-BGRKP sy-vline 
WA_PLM_CLASS_SEARCH_STR-ANAME sy-vline 
WA_PLM_CLASS_SEARCH_STR-ADATU sy-vline 
WA_PLM_CLASS_SEARCH_STR-VNAME sy-vline 
WA_PLM_CLASS_SEARCH_STR-VDATU sy-vline 
WA_PLM_CLASS_SEARCH_STR-VONDT sy-vline 
WA_PLM_CLASS_SEARCH_STR-BISDT sy-vline 
WA_PLM_CLASS_SEARCH_STR-ANZUO sy-vline 
WA_PLM_CLASS_SEARCH_STR-PRAUS sy-vline 
WA_PLM_CLASS_SEARCH_STR-SICHT sy-vline 
WA_PLM_CLASS_SEARCH_STR-DOKNR sy-vline 
WA_PLM_CLASS_SEARCH_STR-DOKAR sy-vline 
WA_PLM_CLASS_SEARCH_STR-DOKTL sy-vline 
WA_PLM_CLASS_SEARCH_STR-DOKVR sy-vline 
WA_PLM_CLASS_SEARCH_STR-DINKZ sy-vline 
WA_PLM_CLASS_SEARCH_STR-NNORM sy-vline 
WA_PLM_CLASS_SEARCH_STR-NORMN sy-vline 
WA_PLM_CLASS_SEARCH_STR-NORMB sy-vline 
WA_PLM_CLASS_SEARCH_STR-NRMT1 sy-vline 
WA_PLM_CLASS_SEARCH_STR-NRMT2 sy-vline 
WA_PLM_CLASS_SEARCH_STR-AUSGD sy-vline 
WA_PLM_CLASS_SEARCH_STR-VERSD sy-vline 
WA_PLM_CLASS_SEARCH_STR-VERSI sy-vline 
WA_PLM_CLASS_SEARCH_STR-LEIST sy-vline 
WA_PLM_CLASS_SEARCH_STR-VERWE sy-vline 
WA_PLM_CLASS_SEARCH_STR-SPART sy-vline 
WA_PLM_CLASS_SEARCH_STR-LREF3 sy-vline 
WA_PLM_CLASS_SEARCH_STR-WWSKZ sy-vline 
WA_PLM_CLASS_SEARCH_STR-WWSSI sy-vline 
WA_PLM_CLASS_SEARCH_STR-POTPR sy-vline 
WA_PLM_CLASS_SEARCH_STR-CLOBK sy-vline 
WA_PLM_CLASS_SEARCH_STR-CLMUL sy-vline 
WA_PLM_CLASS_SEARCH_STR-CVIEW sy-vline 
WA_PLM_CLASS_SEARCH_STR-DISST sy-vline 
WA_PLM_CLASS_SEARCH_STR-MEINS sy-vline 
WA_PLM_CLASS_SEARCH_STR-CLMOD sy-vline 
WA_PLM_CLASS_SEARCH_STR-VWSTL sy-vline 
WA_PLM_CLASS_SEARCH_STR-VWPLA sy-vline 
WA_PLM_CLASS_SEARCH_STR-CLALT sy-vline 
WA_PLM_CLASS_SEARCH_STR-LBREI sy-vline 
WA_PLM_CLASS_SEARCH_STR-BNAME sy-vline 
WA_PLM_CLASS_SEARCH_STR-MAXBL sy-vline 
WA_PLM_CLASS_SEARCH_STR-KNOBJ sy-vline 
WA_PLM_CLASS_SEARCH_STR-LOCLA sy-vline 
WA_PLM_CLASS_SEARCH_STR-KATALOG sy-vline 
WA_PLM_CLASS_SEARCH_STR-KDOKAZ sy-vline 
WA_PLM_CLASS_SEARCH_STR-GENRKZ sy-vline 
WA_PLM_CLASS_SEARCH_STR-LASTCHANGEDDATETIME sy-vline 
WA_PLM_CLASS_SEARCH_STR-KLSBEZ sy-vline 
WA_PLM_CLASS_SEARCH_STR-KLARTDESC sy-vline      INTO ld_text SEPARATED BY SPACE.

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