ABAP Select data from SAP table PTRV_REASGN_FM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTRV_REASGN_FM
*  INTO TABLE @DATA(IT_PTRV_REASGN_FM2).
*--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_PTRV_REASGN_FM INDEX 1 INTO DATA(WA_PTRV_REASGN_FM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTRV_REASGN_FM>-MANDT = 1.
<PTRV_REASGN_FM>-PERNR = 1.
<PTRV_REASGN_FM>-REINR = 1.
<PTRV_REASGN_FM>-PERIO = 1.
<PTRV_REASGN_FM>-PDVRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTRV_REASGN_FM-REASSIGN_NR, sy-vline,
  WA_PTRV_REASGN_FM-OLD_FUND, sy-vline,
  WA_PTRV_REASGN_FM-OLD_FUNDS_CTR, sy-vline,
  WA_PTRV_REASGN_FM-OLD_CMMT_ITEM, sy-vline,
  WA_PTRV_REASGN_FM-OLD_GRANT_NBR, sy-vline,
  WA_PTRV_REASGN_FM-OLD_FUNC_AREA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTRV_REASGN_FM 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_PTRV_REASGN_FM 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_PTRV_REASGN_FM INTO WA_PTRV_REASGN_FM.


*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 FMCIL, internal->external for field OLD_CMMT_ITEM
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_PTRV_REASGN_FM-OLD_CMMT_ITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTRV_REASGN_FM-OLD_CMMT_ITEM.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit FMCIL, internal->external for field NEW_CMMT_ITEM
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_PTRV_REASGN_FM-NEW_CMMT_ITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTRV_REASGN_FM-NEW_CMMT_ITEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NEW_GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PTRV_REASGN_FM-NEW_GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTRV_REASGN_FM-NEW_GRANT_NBR.
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_PTRV_REASGN_FM_STR, 
MANDT TYPE STRING,
PERNR TYPE STRING,
REINR TYPE STRING,
PERIO TYPE STRING,
PDVRS TYPE STRING,
REASSIGN_NR TYPE STRING,
OLD_FUND TYPE STRING,
OLD_FUNDS_CTR TYPE STRING,
OLD_CMMT_ITEM TYPE STRING,
OLD_GRANT_NBR TYPE STRING,
OLD_FUNC_AREA TYPE STRING,
OLD_BUDGET_PD TYPE STRING,
NEW_FUND TYPE STRING,
NEW_FUNDS_CTR TYPE STRING,
NEW_CMMT_ITEM TYPE STRING,
NEW_GRANT_NBR TYPE STRING,
NEW_FUNC_AREA TYPE STRING,
NEW_BUDGET_PD TYPE STRING,
COMP_CODE TYPE STRING,
FLG_TRV_UPD TYPE STRING,
FLG_RWIN_UPD TYPE STRING,
DATES TYPE STRING,
TIMES TYPE STRING,
UNAME TYPE STRING,
UPD_DATES TYPE STRING,
UPD_TIMES TYPE STRING,
UPD_UNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTRV_REASGN_FM_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_PTRV_REASGN_FM_STR-MANDT sy-vline 
WA_PTRV_REASGN_FM_STR-PERNR sy-vline 
WA_PTRV_REASGN_FM_STR-REINR sy-vline 
WA_PTRV_REASGN_FM_STR-PERIO sy-vline 
WA_PTRV_REASGN_FM_STR-PDVRS sy-vline 
WA_PTRV_REASGN_FM_STR-REASSIGN_NR sy-vline 
WA_PTRV_REASGN_FM_STR-OLD_FUND sy-vline 
WA_PTRV_REASGN_FM_STR-OLD_FUNDS_CTR sy-vline 
WA_PTRV_REASGN_FM_STR-OLD_CMMT_ITEM sy-vline 
WA_PTRV_REASGN_FM_STR-OLD_GRANT_NBR sy-vline 
WA_PTRV_REASGN_FM_STR-OLD_FUNC_AREA sy-vline 
WA_PTRV_REASGN_FM_STR-OLD_BUDGET_PD sy-vline 
WA_PTRV_REASGN_FM_STR-NEW_FUND sy-vline 
WA_PTRV_REASGN_FM_STR-NEW_FUNDS_CTR sy-vline 
WA_PTRV_REASGN_FM_STR-NEW_CMMT_ITEM sy-vline 
WA_PTRV_REASGN_FM_STR-NEW_GRANT_NBR sy-vline 
WA_PTRV_REASGN_FM_STR-NEW_FUNC_AREA sy-vline 
WA_PTRV_REASGN_FM_STR-NEW_BUDGET_PD sy-vline 
WA_PTRV_REASGN_FM_STR-COMP_CODE sy-vline 
WA_PTRV_REASGN_FM_STR-FLG_TRV_UPD sy-vline 
WA_PTRV_REASGN_FM_STR-FLG_RWIN_UPD sy-vline 
WA_PTRV_REASGN_FM_STR-DATES sy-vline 
WA_PTRV_REASGN_FM_STR-TIMES sy-vline 
WA_PTRV_REASGN_FM_STR-UNAME sy-vline 
WA_PTRV_REASGN_FM_STR-UPD_DATES sy-vline 
WA_PTRV_REASGN_FM_STR-UPD_TIMES sy-vline 
WA_PTRV_REASGN_FM_STR-UPD_UNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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