ABAP Select data from SAP table TPFYSTRUCT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TPFYSTRUCT
*  INTO TABLE @DATA(IT_TPFYSTRUCT2).
*--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_TPFYSTRUCT INDEX 1 INTO DATA(WA_TPFYSTRUCT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TPFYSTRUCT>-NAME = 1.
<TPFYSTRUCT>-GRP = 1.
<TPFYSTRUCT>-TYPE = 1.
<TPFYSTRUCT>-CHG = 1.
<TPFYSTRUCT>-SEP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TPFYSTRUCT-STR, sy-vline,
  WA_TPFYSTRUCT-MIN, sy-vline,
  WA_TPFYSTRUCT-MAX, sy-vline,
  WA_TPFYSTRUCT-REPID, sy-vline,
  WA_TPFYSTRUCT-FORM, sy-vline,
  WA_TPFYSTRUCT-COMMENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TPFYSTRUCT 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_TPFYSTRUCT 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_TPFYSTRUCT INTO WA_TPFYSTRUCT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TPFYSTRUCT_STR, 
NAME TYPE STRING,
GRP TYPE STRING,
TYPE TYPE STRING,
CHG TYPE STRING,
SEP TYPE STRING,
STR TYPE STRING,
MIN TYPE STRING,
MAX TYPE STRING,
REPID TYPE STRING,
FORM TYPE STRING,
COMMENT TYPE STRING,
OPSYS TYPE STRING,
CHECKALL TYPE STRING,
MIN64 TYPE STRING,
MAX64 TYPE STRING,
MIN_SET TYPE STRING,
MAX_SET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TPFYSTRUCT_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_TPFYSTRUCT_STR-NAME sy-vline 
WA_TPFYSTRUCT_STR-GRP sy-vline 
WA_TPFYSTRUCT_STR-TYPE sy-vline 
WA_TPFYSTRUCT_STR-CHG sy-vline 
WA_TPFYSTRUCT_STR-SEP sy-vline 
WA_TPFYSTRUCT_STR-STR sy-vline 
WA_TPFYSTRUCT_STR-MIN sy-vline 
WA_TPFYSTRUCT_STR-MAX sy-vline 
WA_TPFYSTRUCT_STR-REPID sy-vline 
WA_TPFYSTRUCT_STR-FORM sy-vline 
WA_TPFYSTRUCT_STR-COMMENT sy-vline 
WA_TPFYSTRUCT_STR-OPSYS sy-vline 
WA_TPFYSTRUCT_STR-CHECKALL sy-vline 
WA_TPFYSTRUCT_STR-MIN64 sy-vline 
WA_TPFYSTRUCT_STR-MAX64 sy-vline 
WA_TPFYSTRUCT_STR-MIN_SET sy-vline 
WA_TPFYSTRUCT_STR-MAX_SET sy-vline      INTO ld_text SEPARATED BY SPACE.

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