ABAP Select data from SAP table PDTC 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 PDTC 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 PDTC. 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 PDTC 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_PDTC TYPE STANDARD TABLE OF PDTC,
      WA_PDTC TYPE PDTC,
      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: <PDTC> TYPE PDTC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PDTC
*  INTO TABLE @DATA(IT_PDTC2).
*--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_PDTC INDEX 1 INTO DATA(WA_PDTC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PDTC>-INFNR = 1.
<PDTC>-EKORG = 1.
<PDTC>-ESOKZ = 1.
<PDTC>-WERKS = 1.
<PDTC>-LIFNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PDTC-LTSNR, sy-vline,
  WA_PDTC-MATNR, sy-vline,
  WA_PDTC-VLFKZ, sy-vline,
  WA_PDTC-GTERM, sy-vline,
  WA_PDTC-PLIFZ_EINE, sy-vline,
  WA_PDTC-PLIFZ_MARC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PDTC 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_PDTC 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_PDTC INTO WA_PDTC.


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

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

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

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

*Conversion exit ALPHA, internal->external for field MBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PDTC-MBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDTC-MBLNR.
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_PDTC_STR, 
INFNR TYPE STRING,
EKORG TYPE STRING,
ESOKZ TYPE STRING,
WERKS TYPE STRING,
LIFNR TYPE STRING,
LTSNR TYPE STRING,
MATNR TYPE STRING,
VLFKZ TYPE STRING,
GTERM TYPE STRING,
PLIFZ_EINE TYPE STRING,
PLIFZ_MARC TYPE STRING,
PLIFZ_LFMX TYPE STRING,
PLIFZ TYPE STRING,
PLIFZ_CALC TYPE STRING,
PLIFZ_MEAN_EINE TYPE STRING,
PLIFZ_MEAN_MARC TYPE STRING,
PLIFZ_MEAN_LFMX TYPE STRING,
PLIFZ_SIGMA TYPE STRING,
BEDAT TYPE STRING,
BUDAT TYPE STRING,
EKPO_MENGE TYPE STRING,
MSEG_MENGE TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
MBLNR TYPE STRING,
ZEILE TYPE STRING,
GRAVITY TYPE STRING,
PLIFZ_GRAVITY TYPE STRING,
EINE_KEY_INFO TYPE STRING,
MARC_KEY_INFO TYPE STRING,
LFMX_KEY_INFO TYPE STRING,
ALV_INFO TYPE STRING,
RECORD_SELECTED TYPE STRING,
PLIFZ_CRITICAL TYPE STRING,
LINE_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PDTC_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_PDTC_STR-INFNR sy-vline 
WA_PDTC_STR-EKORG sy-vline 
WA_PDTC_STR-ESOKZ sy-vline 
WA_PDTC_STR-WERKS sy-vline 
WA_PDTC_STR-LIFNR sy-vline 
WA_PDTC_STR-LTSNR sy-vline 
WA_PDTC_STR-MATNR sy-vline 
WA_PDTC_STR-VLFKZ sy-vline 
WA_PDTC_STR-GTERM sy-vline 
WA_PDTC_STR-PLIFZ_EINE sy-vline 
WA_PDTC_STR-PLIFZ_MARC sy-vline 
WA_PDTC_STR-PLIFZ_LFMX sy-vline 
WA_PDTC_STR-PLIFZ sy-vline 
WA_PDTC_STR-PLIFZ_CALC sy-vline 
WA_PDTC_STR-PLIFZ_MEAN_EINE sy-vline 
WA_PDTC_STR-PLIFZ_MEAN_MARC sy-vline 
WA_PDTC_STR-PLIFZ_MEAN_LFMX sy-vline 
WA_PDTC_STR-PLIFZ_SIGMA sy-vline 
WA_PDTC_STR-BEDAT sy-vline 
WA_PDTC_STR-BUDAT sy-vline 
WA_PDTC_STR-EKPO_MENGE sy-vline 
WA_PDTC_STR-MSEG_MENGE sy-vline 
WA_PDTC_STR-EBELN sy-vline 
WA_PDTC_STR-EBELP sy-vline 
WA_PDTC_STR-MBLNR sy-vline 
WA_PDTC_STR-ZEILE sy-vline 
WA_PDTC_STR-GRAVITY sy-vline 
WA_PDTC_STR-PLIFZ_GRAVITY sy-vline 
WA_PDTC_STR-EINE_KEY_INFO sy-vline 
WA_PDTC_STR-MARC_KEY_INFO sy-vline 
WA_PDTC_STR-LFMX_KEY_INFO sy-vline 
WA_PDTC_STR-ALV_INFO sy-vline 
WA_PDTC_STR-RECORD_SELECTED sy-vline 
WA_PDTC_STR-PLIFZ_CRITICAL sy-vline 
WA_PDTC_STR-LINE_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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