ABAP Select data from SAP table GSS_RFIDPL18_LIST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP GSS_RFIDPL18_LIST 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 GSS_RFIDPL18_LIST. 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 GSS_RFIDPL18_LIST 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_GSS_RFIDPL18_LIST TYPE STANDARD TABLE OF GSS_RFIDPL18_LIST,
      WA_GSS_RFIDPL18_LIST TYPE GSS_RFIDPL18_LIST,
      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: <GSS_RFIDPL18_LIST> TYPE GSS_RFIDPL18_LIST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_GSS_RFIDPL18_LIST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM GSS_RFIDPL18_LIST
  INTO TABLE IT_GSS_RFIDPL18_LIST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GSS_RFIDPL18_LIST
*  INTO TABLE @DATA(IT_GSS_RFIDPL18_LIST2).
*--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_GSS_RFIDPL18_LIST INDEX 1 INTO DATA(WA_GSS_RFIDPL18_LIST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_GSS_RFIDPL18_LIST ASSIGNING <GSS_RFIDPL18_LIST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GSS_RFIDPL18_LIST>-BUKRS = 1.
<GSS_RFIDPL18_LIST>-SAKTO = 1.
<GSS_RFIDPL18_LIST>-TXT50 = 1.
<GSS_RFIDPL18_LIST>-WERKS = 1.
<GSS_RFIDPL18_LIST>-ADDR = 1.

ENDLOOP.

LOOP AT IT_GSS_RFIDPL18_LIST INTO WA_GSS_RFIDPL18_LIST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GSS_RFIDPL18_LIST-TEXT45, sy-vline,
  WA_GSS_RFIDPL18_LIST-TEXT15, sy-vline,
  WA_GSS_RFIDPL18_LIST-MATNR, sy-vline,
  WA_GSS_RFIDPL18_LIST-MAKTX, sy-vline,
  WA_GSS_RFIDPL18_LIST-STARTB, sy-vline,
  WA_GSS_RFIDPL18_LIST-RECPER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GSS_RFIDPL18_LIST 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_GSS_RFIDPL18_LIST 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_GSS_RFIDPL18_LIST INTO WA_GSS_RFIDPL18_LIST.


*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 SAKTO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GSS_RFIDPL18_LIST-SAKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GSS_RFIDPL18_LIST-SAKTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_GSS_RFIDPL18_LIST-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GSS_RFIDPL18_LIST-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU172, internal->external for field STARTB
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_GSS_RFIDPL18_LIST-STARTB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GSS_RFIDPL18_LIST-STARTB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU172, internal->external for field ENDBAL
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_GSS_RFIDPL18_LIST-ENDBAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GSS_RFIDPL18_LIST-ENDBAL.
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_GSS_RFIDPL18_LIST_STR, 
BUKRS TYPE STRING,
SAKTO TYPE STRING,
TXT50 TYPE STRING,
WERKS TYPE STRING,
ADDR TYPE STRING,
TEXT45 TYPE STRING,
TEXT15 TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
STARTB TYPE STRING,
RECPER TYPE STRING,
ISSPER TYPE STRING,
ENDBAL TYPE STRING,
WAERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GSS_RFIDPL18_LIST_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_GSS_RFIDPL18_LIST_STR-BUKRS sy-vline 
WA_GSS_RFIDPL18_LIST_STR-SAKTO sy-vline 
WA_GSS_RFIDPL18_LIST_STR-TXT50 sy-vline 
WA_GSS_RFIDPL18_LIST_STR-WERKS sy-vline 
WA_GSS_RFIDPL18_LIST_STR-ADDR sy-vline 
WA_GSS_RFIDPL18_LIST_STR-TEXT45 sy-vline 
WA_GSS_RFIDPL18_LIST_STR-TEXT15 sy-vline 
WA_GSS_RFIDPL18_LIST_STR-MATNR sy-vline 
WA_GSS_RFIDPL18_LIST_STR-MAKTX sy-vline 
WA_GSS_RFIDPL18_LIST_STR-STARTB sy-vline 
WA_GSS_RFIDPL18_LIST_STR-RECPER sy-vline 
WA_GSS_RFIDPL18_LIST_STR-ISSPER sy-vline 
WA_GSS_RFIDPL18_LIST_STR-ENDBAL sy-vline 
WA_GSS_RFIDPL18_LIST_STR-WAERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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