ABAP Select data from SAP table TDP2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TDP2 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 TDP2. 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 TDP2 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_TDP2 TYPE STANDARD TABLE OF TDP2,
      WA_TDP2 TYPE TDP2,
      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: <TDP2> TYPE TDP2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TDP2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TDP2
  INTO TABLE IT_TDP2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TDP2
*  INTO TABLE @DATA(IT_TDP22).
*--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_TDP2 INDEX 1 INTO DATA(WA_TDP22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TDP2 ASSIGNING <TDP2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TDP2>-MANDT = 1.
<TDP2>-STYP = 1.
<TDP2>-FCODE = 1.
<TDP2>-RPGM = 1.
<TDP2>-SPTYP = 1.

ENDLOOP.

LOOP AT IT_TDP2 INTO WA_TDP2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TDP2-SCTYP, sy-vline,
  WA_TDP2-SMTYP, sy-vline,
  WA_TDP2-SZREG, sy-vline,
  WA_TDP2-SRTYP, sy-vline,
  WA_TDP2-RINIT, sy-vline,
  WA_TDP2-RINITPGM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TDP2 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_TDP2 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_TDP2 INTO WA_TDP2.


*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_TDP2_STR, 
MANDT TYPE STRING,
STYP TYPE STRING,
FCODE TYPE STRING,
RPGM TYPE STRING,
SPTYP TYPE STRING,
SCTYP TYPE STRING,
SMTYP TYPE STRING,
SZREG TYPE STRING,
SRTYP TYPE STRING,
RINIT TYPE STRING,
RINITPGM TYPE STRING,
SLP TYPE STRING,
NPROT TYPE STRING,
SAP TYPE STRING,
SPL TYPE STRING,
SPB TYPE STRING,
SBD TYPE STRING,
SDP TYPE STRING,
SDD TYPE STRING,
XDOC1 TYPE STRING,
XDOCTYP1 TYPE STRING,
SDKZ1 TYPE STRING,
XDOC2 TYPE STRING,
XDOCTYP2 TYPE STRING,
SDKZ2 TYPE STRING,
XDOC3 TYPE STRING,
XDOCTYP3 TYPE STRING,
SDKZ3 TYPE STRING,
XDOC4 TYPE STRING,
XDOCTYP4 TYPE STRING,
SDKZ4 TYPE STRING,
XDOC5 TYPE STRING,
XDOCTYP5 TYPE STRING,
SDKZ5 TYPE STRING,
SMP TYPE STRING,
SMBTYP TYPE STRING,
SOP TYPE STRING,
SOBTYP TYPE STRING,
SPP TYPE STRING,
SSD TYPE STRING,
REPTYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TDP2_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_TDP2_STR-MANDT sy-vline 
WA_TDP2_STR-STYP sy-vline 
WA_TDP2_STR-FCODE sy-vline 
WA_TDP2_STR-RPGM sy-vline 
WA_TDP2_STR-SPTYP sy-vline 
WA_TDP2_STR-SCTYP sy-vline 
WA_TDP2_STR-SMTYP sy-vline 
WA_TDP2_STR-SZREG sy-vline 
WA_TDP2_STR-SRTYP sy-vline 
WA_TDP2_STR-RINIT sy-vline 
WA_TDP2_STR-RINITPGM sy-vline 
WA_TDP2_STR-SLP sy-vline 
WA_TDP2_STR-NPROT sy-vline 
WA_TDP2_STR-SAP sy-vline 
WA_TDP2_STR-SPL sy-vline 
WA_TDP2_STR-SPB sy-vline 
WA_TDP2_STR-SBD sy-vline 
WA_TDP2_STR-SDP sy-vline 
WA_TDP2_STR-SDD sy-vline 
WA_TDP2_STR-XDOC1 sy-vline 
WA_TDP2_STR-XDOCTYP1 sy-vline 
WA_TDP2_STR-SDKZ1 sy-vline 
WA_TDP2_STR-XDOC2 sy-vline 
WA_TDP2_STR-XDOCTYP2 sy-vline 
WA_TDP2_STR-SDKZ2 sy-vline 
WA_TDP2_STR-XDOC3 sy-vline 
WA_TDP2_STR-XDOCTYP3 sy-vline 
WA_TDP2_STR-SDKZ3 sy-vline 
WA_TDP2_STR-XDOC4 sy-vline 
WA_TDP2_STR-XDOCTYP4 sy-vline 
WA_TDP2_STR-SDKZ4 sy-vline 
WA_TDP2_STR-XDOC5 sy-vline 
WA_TDP2_STR-XDOCTYP5 sy-vline 
WA_TDP2_STR-SDKZ5 sy-vline 
WA_TDP2_STR-SMP sy-vline 
WA_TDP2_STR-SMBTYP sy-vline 
WA_TDP2_STR-SOP sy-vline 
WA_TDP2_STR-SOBTYP sy-vline 
WA_TDP2_STR-SPP sy-vline 
WA_TDP2_STR-SSD sy-vline 
WA_TDP2_STR-REPTYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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