ABAP Select data from SAP table PVALT_DYNP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PVALT_DYNP
*  INTO TABLE @DATA(IT_PVALT_DYNP2).
*--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_PVALT_DYNP INDEX 1 INTO DATA(WA_PVALT_DYNP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PVALT_DYNP>-PNTYPE = 1.
<PVALT_DYNP>-PVTYPE = 1.
<PVALT_DYNP>-PATYPE = 1.
<PVALT_DYNP>-PNAME = 1.
<PVALT_DYNP>-PVNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PVALT_DYNP-ALTNUM, sy-vline,
  WA_PVALT_DYNP-CMPEXT, sy-vline,
  WA_PVALT_DYNP-LOCEXT, sy-vline,
  WA_PVALT_DYNP-PPEUSE, sy-vline,
  WA_PVALT_DYNP-PNGUID, sy-vline,
  WA_PVALT_DYNP-PVGUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PVALT_DYNP 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_PVALT_DYNP 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_PVALT_DYNP INTO WA_PVALT_DYNP.


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

*Conversion exit ALPHA, internal->external for field ALTNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PVALT_DYNP-ALTNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PVALT_DYNP-ALTNUM.
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_PVALT_DYNP_STR, 
PNTYPE TYPE STRING,
PVTYPE TYPE STRING,
PATYPE TYPE STRING,
PNAME TYPE STRING,
PVNAME TYPE STRING,
ALTNUM TYPE STRING,
CMPEXT TYPE STRING,
LOCEXT TYPE STRING,
PPEUSE TYPE STRING,
PNGUID TYPE STRING,
PVGUID TYPE STRING,
PAGUID TYPE STRING,
PNTEXT TYPE STRING,
PATEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PVALT_DYNP_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_PVALT_DYNP_STR-PNTYPE sy-vline 
WA_PVALT_DYNP_STR-PVTYPE sy-vline 
WA_PVALT_DYNP_STR-PATYPE sy-vline 
WA_PVALT_DYNP_STR-PNAME sy-vline 
WA_PVALT_DYNP_STR-PVNAME sy-vline 
WA_PVALT_DYNP_STR-ALTNUM sy-vline 
WA_PVALT_DYNP_STR-CMPEXT sy-vline 
WA_PVALT_DYNP_STR-LOCEXT sy-vline 
WA_PVALT_DYNP_STR-PPEUSE sy-vline 
WA_PVALT_DYNP_STR-PNGUID sy-vline 
WA_PVALT_DYNP_STR-PVGUID sy-vline 
WA_PVALT_DYNP_STR-PAGUID sy-vline 
WA_PVALT_DYNP_STR-PNTEXT sy-vline 
WA_PVALT_DYNP_STR-PATEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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