ABAP Select data from SAP table PLAFI 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 PLAFI 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 PLAFI. 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 PLAFI 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_PLAFI TYPE STANDARD TABLE OF PLAFI,
      WA_PLAFI TYPE PLAFI,
      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: <PLAFI> TYPE PLAFI.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PLAFI
*  INTO TABLE @DATA(IT_PLAFI2).
*--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_PLAFI INDEX 1 INTO DATA(WA_PLAFI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PLAFI>-ARNUMMER = 1.
<PLAFI>-VSGRUPPE = 1.
<PLAFI>-VSNUMMER = 1.
<PLAFI>-PRCTR = 1.
<PLAFI>-PRNAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PLAFI-PRPOS, sy-vline,
  WA_PLAFI-PSPID, sy-vline,
  WA_PLAFI-POSID, sy-vline,
  WA_PLAFI-KDAUF, sy-vline,
  WA_PLAFI-KDPOS, sy-vline,
  WA_PLAFI-PLNUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PLAFI 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_PLAFI 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_PLAFI INTO WA_PLAFI.


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

*Conversion exit POSID, internal->external for field PRPOS
CALL FUNCTION 'CONVERSION_EXIT_POSID_OUTPUT'
  EXPORTING
    input =                      WA_PLAFI-PRPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLAFI-PRPOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PSPID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_PLAFI-PSPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLAFI-PSPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_PLAFI-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLAFI-POSID.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PLAFI-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLAFI-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PLAFI-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLAFI-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field REVLV
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PLAFI-REVLV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLAFI-REVLV.
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_PLAFI_STR, 
ARNUMMER TYPE STRING,
VSGRUPPE TYPE STRING,
VSNUMMER TYPE STRING,
PRCTR TYPE STRING,
PRNAM TYPE STRING,
PRPOS TYPE STRING,
PSPID TYPE STRING,
POSID TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PLNUM TYPE STRING,
MATNR TYPE STRING,
MTEXT TYPE STRING,
PLWRK TYPE STRING,
PWWRK TYPE STRING,
PAART TYPE STRING,
BESKZ TYPE STRING,
GSMNG TYPE STRING,
TLMNG TYPE STRING,
AVMNG TYPE STRING,
BDMNG TYPE STRING,
PSTTR TYPE STRING,
PEDTR TYPE STRING,
PERTR TYPE STRING,
WEBAZ TYPE STRING,
DISPO TYPE STRING,
UMSKZ TYPE STRING,
AUFFX TYPE STRING,
STLFX TYPE STRING,
KNTTP TYPE STRING,
RSNUM TYPE STRING,
SERNR TYPE STRING,
PALTR TYPE STRING,
TECHS TYPE STRING,
VERID TYPE STRING,
AUFNR TYPE STRING,
TERST TYPE STRING,
TERED TYPE STRING,
TRMKZ TYPE STRING,
TRMER TYPE STRING,
REDKZ TYPE STRING,
TRMHK TYPE STRING,
MEINS TYPE STRING,
REVLV TYPE STRING,
LGORT TYPE STRING,
PLSCN TYPE STRING,
DUMMY_PLAF_INCL_EEW_PS TYPE STRING,
KALID TYPE STRING,
INT_ID TYPE STRING,
LIGHT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PLAFI_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_PLAFI_STR-ARNUMMER sy-vline 
WA_PLAFI_STR-VSGRUPPE sy-vline 
WA_PLAFI_STR-VSNUMMER sy-vline 
WA_PLAFI_STR-PRCTR sy-vline 
WA_PLAFI_STR-PRNAM sy-vline 
WA_PLAFI_STR-PRPOS sy-vline 
WA_PLAFI_STR-PSPID sy-vline 
WA_PLAFI_STR-POSID sy-vline 
WA_PLAFI_STR-KDAUF sy-vline 
WA_PLAFI_STR-KDPOS sy-vline 
WA_PLAFI_STR-PLNUM sy-vline 
WA_PLAFI_STR-MATNR sy-vline 
WA_PLAFI_STR-MTEXT sy-vline 
WA_PLAFI_STR-PLWRK sy-vline 
WA_PLAFI_STR-PWWRK sy-vline 
WA_PLAFI_STR-PAART sy-vline 
WA_PLAFI_STR-BESKZ sy-vline 
WA_PLAFI_STR-GSMNG sy-vline 
WA_PLAFI_STR-TLMNG sy-vline 
WA_PLAFI_STR-AVMNG sy-vline 
WA_PLAFI_STR-BDMNG sy-vline 
WA_PLAFI_STR-PSTTR sy-vline 
WA_PLAFI_STR-PEDTR sy-vline 
WA_PLAFI_STR-PERTR sy-vline 
WA_PLAFI_STR-WEBAZ sy-vline 
WA_PLAFI_STR-DISPO sy-vline 
WA_PLAFI_STR-UMSKZ sy-vline 
WA_PLAFI_STR-AUFFX sy-vline 
WA_PLAFI_STR-STLFX sy-vline 
WA_PLAFI_STR-KNTTP sy-vline 
WA_PLAFI_STR-RSNUM sy-vline 
WA_PLAFI_STR-SERNR sy-vline 
WA_PLAFI_STR-PALTR sy-vline 
WA_PLAFI_STR-TECHS sy-vline 
WA_PLAFI_STR-VERID sy-vline 
WA_PLAFI_STR-AUFNR sy-vline 
WA_PLAFI_STR-TERST sy-vline 
WA_PLAFI_STR-TERED sy-vline 
WA_PLAFI_STR-TRMKZ sy-vline 
WA_PLAFI_STR-TRMER sy-vline 
WA_PLAFI_STR-REDKZ sy-vline 
WA_PLAFI_STR-TRMHK sy-vline 
WA_PLAFI_STR-MEINS sy-vline 
WA_PLAFI_STR-REVLV sy-vline 
WA_PLAFI_STR-LGORT sy-vline 
WA_PLAFI_STR-PLSCN sy-vline 
WA_PLAFI_STR-DUMMY_PLAF_INCL_EEW_PS sy-vline 
WA_PLAFI_STR-KALID sy-vline 
WA_PLAFI_STR-INT_ID sy-vline 
WA_PLAFI_STR-LIGHT sy-vline      INTO ld_text SEPARATED BY SPACE.

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