ABAP Select data from SAP table PPETDP_ECN_MOD_PV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPETDP_ECN_MOD_PV
*  INTO TABLE @DATA(IT_PPETDP_ECN_MOD_PV2).
*--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_PPETDP_ECN_MOD_PV INDEX 1 INTO DATA(WA_PPETDP_ECN_MOD_PV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPETDP_ECN_MOD_PV>-PAGUID = 1.
<PPETDP_ECN_MOD_PV>-AENNR = 1.
<PPETDP_ECN_MOD_PV>-VERSIOID = 1.
<PPETDP_ECN_MOD_PV>-DATEF = 1.
<PPETDP_ECN_MOD_PV>-DURATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPETDP_ECN_MOD_PV-DURATION_FIX, sy-vline,
  WA_PPETDP_ECN_MOD_PV-UNITD, sy-vline,
  WA_PPETDP_ECN_MOD_PV-DURRND, sy-vline,
  WA_PPETDP_ECN_MOD_PV-VRSIOEX, sy-vline,
  WA_PPETDP_ECN_MOD_PV-ACTIVITY, sy-vline,
  WA_PPETDP_ECN_MOD_PV-ALTNUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPETDP_ECN_MOD_PV 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_PPETDP_ECN_MOD_PV 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_PPETDP_ECN_MOD_PV INTO WA_PPETDP_ECN_MOD_PV.


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

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

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PPETDP_ECN_MOD_PV-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPETDP_ECN_MOD_PV-MATNR.
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_PPETDP_ECN_MOD_PV_STR, 
PAGUID TYPE STRING,
AENNR TYPE STRING,
VERSIOID TYPE STRING,
DATEF TYPE STRING,
DURATION TYPE STRING,
DURATION_FIX TYPE STRING,
UNITD TYPE STRING,
DURRND TYPE STRING,
VRSIOEX TYPE STRING,
ACTIVITY TYPE STRING,
ALTNUM TYPE STRING,
AENNR_DATUV TYPE STRING,
NEXT_AENNR TYPE STRING,
NEXT_AENNR_DATUV TYPE STRING,
MODE_DURATION TYPE STRING,
MODE_DURATION_FIX TYPE STRING,
MODE_UNITD TYPE STRING,
VALIDITY TYPE STRING,
VALIDITY_FLAG TYPE STRING,
MATID TYPE STRING,
LOCTO TYPE STRING,
NAME TYPE STRING,
MATNR TYPE STRING,
LOCNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPETDP_ECN_MOD_PV_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_PPETDP_ECN_MOD_PV_STR-PAGUID sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-AENNR sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-VERSIOID sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-DATEF sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-DURATION sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-DURATION_FIX sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-UNITD sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-DURRND sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-VRSIOEX sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-ACTIVITY sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-ALTNUM sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-AENNR_DATUV sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-NEXT_AENNR sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-NEXT_AENNR_DATUV sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-MODE_DURATION sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-MODE_DURATION_FIX sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-MODE_UNITD sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-VALIDITY sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-VALIDITY_FLAG sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-MATID sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-LOCTO sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-NAME sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-MATNR sy-vline 
WA_PPETDP_ECN_MOD_PV_STR-LOCNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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