ABAP Select data from SAP table PYD_S_RESP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PYD_S_RESP
*  INTO TABLE @DATA(IT_PYD_S_RESP2).
*--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_PYD_S_RESP INDEX 1 INTO DATA(WA_PYD_S_RESP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PYD_S_RESP>-INSTID = 1.
<PYD_S_RESP>-PAR_HASH = 1.
<PYD_S_RESP>-ROW_ID = 1.
<PYD_S_RESP>-PAR_TYPE = 1.
<PYD_S_RESP>-KIND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PYD_S_RESP-SIGN, sy-vline,
  WA_PYD_S_RESP-OPTI, sy-vline,
  WA_PYD_S_RESP-LOW, sy-vline,
  WA_PYD_S_RESP-HIGH, sy-vline,
  WA_PYD_S_RESP-CURRENCY, sy-vline,
  WA_PYD_S_RESP-UNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PYD_S_RESP 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_PYD_S_RESP 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_PYD_S_RESP INTO WA_PYD_S_RESP.


*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 CKINP, internal->external for field INSTID
CALL FUNCTION 'CONVERSION_EXIT_CKINP_OUTPUT'
  EXPORTING
    input =                      WA_PYD_S_RESP-INSTID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYD_S_RESP-INSTID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PYD_S_RESP-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYD_S_RESP-UNIT.
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_PYD_S_RESP_STR, 
INSTID TYPE STRING,
PAR_HASH TYPE STRING,
ROW_ID TYPE STRING,
PAR_TYPE TYPE STRING,
KIND TYPE STRING,
SIGN TYPE STRING,
OPTI TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
CURRENCY TYPE STRING,
UNIT TYPE STRING,
NAME TYPE STRING,
ROLLNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PYD_S_RESP_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_PYD_S_RESP_STR-INSTID sy-vline 
WA_PYD_S_RESP_STR-PAR_HASH sy-vline 
WA_PYD_S_RESP_STR-ROW_ID sy-vline 
WA_PYD_S_RESP_STR-PAR_TYPE sy-vline 
WA_PYD_S_RESP_STR-KIND sy-vline 
WA_PYD_S_RESP_STR-SIGN sy-vline 
WA_PYD_S_RESP_STR-OPTI sy-vline 
WA_PYD_S_RESP_STR-LOW sy-vline 
WA_PYD_S_RESP_STR-HIGH sy-vline 
WA_PYD_S_RESP_STR-CURRENCY sy-vline 
WA_PYD_S_RESP_STR-UNIT sy-vline 
WA_PYD_S_RESP_STR-NAME sy-vline 
WA_PYD_S_RESP_STR-ROLLNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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