ABAP Select data from SAP table T8PL01DD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T8PL01DD 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 T8PL01DD. 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 T8PL01DD 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_T8PL01DD TYPE STANDARD TABLE OF T8PL01DD,
      WA_T8PL01DD TYPE T8PL01DD,
      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: <T8PL01DD> TYPE T8PL01DD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T8PL01DD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T8PL01DD
  INTO TABLE IT_T8PL01DD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T8PL01DD
*  INTO TABLE @DATA(IT_T8PL01DD2).
*--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_T8PL01DD INDEX 1 INTO DATA(WA_T8PL01DD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T8PL01DD ASSIGNING <T8PL01DD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T8PL01DD>-MANDT = 1.
<T8PL01DD>-APPL = 1.
<T8PL01DD>-SUBCLASS = 1.
<T8PL01DD>-TABNAME = 1.
<T8PL01DD>-FIELDNAME = 1.

ENDLOOP.

LOOP AT IT_T8PL01DD INTO WA_T8PL01DD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T8PL01DD-WA_OFFSET, sy-vline,
  WA_T8PL01DD-DOMNAME, sy-vline,
  WA_T8PL01DD-LENG, sy-vline,
  WA_T8PL01DD-INTLEN, sy-vline,
  WA_T8PL01DD-OUTPUTLEN, sy-vline,
  WA_T8PL01DD-DECIMALS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T8PL01DD 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_T8PL01DD 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_T8PL01DD INTO WA_T8PL01DD.


*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 DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_T8PL01DD-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8PL01DD-DATATYPE.
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_T8PL01DD_STR, 
MANDT TYPE STRING,
APPL TYPE STRING,
SUBCLASS TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
WA_OFFSET TYPE STRING,
DOMNAME TYPE STRING,
LENG TYPE STRING,
INTLEN TYPE STRING,
OUTPUTLEN TYPE STRING,
DECIMALS TYPE STRING,
DATATYPE TYPE STRING,
INTTYPE TYPE STRING,
MEMORYID TYPE STRING,
CONVEXIT TYPE STRING,
REPTEXT TYPE STRING,
SCRTEXT_S TYPE STRING,
SCRTEXT_M TYPE STRING,
SCRTEXT_L TYPE STRING,
VALEXI TYPE STRING,
SIGN TYPE STRING,
F4AVAILABL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T8PL01DD_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_T8PL01DD_STR-MANDT sy-vline 
WA_T8PL01DD_STR-APPL sy-vline 
WA_T8PL01DD_STR-SUBCLASS sy-vline 
WA_T8PL01DD_STR-TABNAME sy-vline 
WA_T8PL01DD_STR-FIELDNAME sy-vline 
WA_T8PL01DD_STR-WA_OFFSET sy-vline 
WA_T8PL01DD_STR-DOMNAME sy-vline 
WA_T8PL01DD_STR-LENG sy-vline 
WA_T8PL01DD_STR-INTLEN sy-vline 
WA_T8PL01DD_STR-OUTPUTLEN sy-vline 
WA_T8PL01DD_STR-DECIMALS sy-vline 
WA_T8PL01DD_STR-DATATYPE sy-vline 
WA_T8PL01DD_STR-INTTYPE sy-vline 
WA_T8PL01DD_STR-MEMORYID sy-vline 
WA_T8PL01DD_STR-CONVEXIT sy-vline 
WA_T8PL01DD_STR-REPTEXT sy-vline 
WA_T8PL01DD_STR-SCRTEXT_S sy-vline 
WA_T8PL01DD_STR-SCRTEXT_M sy-vline 
WA_T8PL01DD_STR-SCRTEXT_L sy-vline 
WA_T8PL01DD_STR-VALEXI sy-vline 
WA_T8PL01DD_STR-SIGN sy-vline 
WA_T8PL01DD_STR-F4AVAILABL sy-vline      INTO ld_text SEPARATED BY SPACE.

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