ABAP Select data from SAP table T8PL02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T8PL02 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 T8PL02. 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 T8PL02 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_T8PL02 TYPE STANDARD TABLE OF T8PL02,
      WA_T8PL02 TYPE T8PL02,
      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: <T8PL02> TYPE T8PL02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T8PL02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T8PL02
  INTO TABLE IT_T8PL02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T8PL02
*  INTO TABLE @DATA(IT_T8PL022).
*--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_T8PL02 INDEX 1 INTO DATA(WA_T8PL022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T8PL02 ASSIGNING <T8PL02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T8PL02>-MANDT = 1.
<T8PL02>-APPL = 1.
<T8PL02>-SUBCLASS = 1.
<T8PL02>-TABNAME = 1.
<T8PL02>-I_INTERNAL = 1.

ENDLOOP.

LOOP AT IT_T8PL02 INTO WA_T8PL02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T8PL02-UATTR, sy-vline,
  WA_T8PL02-DCLASS, sy-vline,
  WA_T8PL02-ATTRB, sy-vline,
  WA_T8PL02-DATA_INPUT, sy-vline,
  WA_T8PL02-UINIT, sy-vline,
  WA_T8PL02-FIELDNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T8PL02 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_T8PL02 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_T8PL02 INTO WA_T8PL02.


*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_T8PL02_STR, 
MANDT TYPE STRING,
APPL TYPE STRING,
SUBCLASS TYPE STRING,
TABNAME TYPE STRING,
I_INTERNAL TYPE STRING,
UATTR TYPE STRING,
DCLASS TYPE STRING,
ATTRB TYPE STRING,
DATA_INPUT TYPE STRING,
UINIT TYPE STRING,
FIELDNAME TYPE STRING,
RTABNAME TYPE STRING,
RFIELDNAME TYPE STRING,
DMAC TYPE STRING,
F4PR TYPE STRING,
F4FM TYPE STRING,
DFIELDNAME TYPE STRING,
ATRCF TYPE STRING,
UPDOTH TYPE STRING,
SORT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T8PL02_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_T8PL02_STR-MANDT sy-vline 
WA_T8PL02_STR-APPL sy-vline 
WA_T8PL02_STR-SUBCLASS sy-vline 
WA_T8PL02_STR-TABNAME sy-vline 
WA_T8PL02_STR-I_INTERNAL sy-vline 
WA_T8PL02_STR-UATTR sy-vline 
WA_T8PL02_STR-DCLASS sy-vline 
WA_T8PL02_STR-ATTRB sy-vline 
WA_T8PL02_STR-DATA_INPUT sy-vline 
WA_T8PL02_STR-UINIT sy-vline 
WA_T8PL02_STR-FIELDNAME sy-vline 
WA_T8PL02_STR-RTABNAME sy-vline 
WA_T8PL02_STR-RFIELDNAME sy-vline 
WA_T8PL02_STR-DMAC sy-vline 
WA_T8PL02_STR-F4PR sy-vline 
WA_T8PL02_STR-F4FM sy-vline 
WA_T8PL02_STR-DFIELDNAME sy-vline 
WA_T8PL02_STR-ATRCF sy-vline 
WA_T8PL02_STR-UPDOTH sy-vline 
WA_T8PL02_STR-SORT sy-vline      INTO ld_text SEPARATED BY SPACE.

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