ABAP Select data from SAP table T8PL01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T8PL01 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 T8PL01. 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 T8PL01 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_T8PL01 TYPE STANDARD TABLE OF T8PL01,
      WA_T8PL01 TYPE T8PL01,
      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: <T8PL01> TYPE T8PL01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T8PL01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T8PL01
  INTO TABLE IT_T8PL01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T8PL01
*  INTO TABLE @DATA(IT_T8PL012).
*--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_T8PL01 INDEX 1 INTO DATA(WA_T8PL012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T8PL01 ASSIGNING <T8PL01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T8PL01>-MANDT = 1.
<T8PL01>-APPL = 1.
<T8PL01>-SUBCLASS = 1.
<T8PL01>-TABNAME = 1.
<T8PL01>-FIELDNAME = 1.

ENDLOOP.

LOOP AT IT_T8PL01 INTO WA_T8PL01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T8PL01-DTYPE, sy-vline,
  WA_T8PL01-DOBLI, sy-vline,
  WA_T8PL01-DSHOW, sy-vline,
  WA_T8PL01-DINIT, sy-vline,
  WA_T8PL01-DMAC, sy-vline,
  WA_T8PL01-F4PR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T8PL01 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_T8PL01 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_T8PL01 INTO WA_T8PL01.


*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_T8PL01_STR, 
MANDT TYPE STRING,
APPL TYPE STRING,
SUBCLASS TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
DTYPE TYPE STRING,
DOBLI TYPE STRING,
DSHOW TYPE STRING,
DINIT TYPE STRING,
DMAC TYPE STRING,
F4PR TYPE STRING,
F4FM TYPE STRING,
B_MEMORYID TYPE STRING,
COMPL TYPE STRING,
SORT TYPE STRING,
DDDRI TYPE STRING,
SETUSE TYPE STRING,
RATIO TYPE STRING,
HDPOS TYPE STRING,
HIERLEVEL TYPE STRING,
MOMENT TYPE STRING,
VALUE TYPE STRING,
INIT TYPE STRING,
HEAD_ROW TYPE STRING,
SUM_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T8PL01_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_T8PL01_STR-MANDT sy-vline 
WA_T8PL01_STR-APPL sy-vline 
WA_T8PL01_STR-SUBCLASS sy-vline 
WA_T8PL01_STR-TABNAME sy-vline 
WA_T8PL01_STR-FIELDNAME sy-vline 
WA_T8PL01_STR-DTYPE sy-vline 
WA_T8PL01_STR-DOBLI sy-vline 
WA_T8PL01_STR-DSHOW sy-vline 
WA_T8PL01_STR-DINIT sy-vline 
WA_T8PL01_STR-DMAC sy-vline 
WA_T8PL01_STR-F4PR sy-vline 
WA_T8PL01_STR-F4FM sy-vline 
WA_T8PL01_STR-B_MEMORYID sy-vline 
WA_T8PL01_STR-COMPL sy-vline 
WA_T8PL01_STR-SORT sy-vline 
WA_T8PL01_STR-DDDRI sy-vline 
WA_T8PL01_STR-SETUSE sy-vline 
WA_T8PL01_STR-RATIO sy-vline 
WA_T8PL01_STR-HDPOS sy-vline 
WA_T8PL01_STR-HIERLEVEL sy-vline 
WA_T8PL01_STR-MOMENT sy-vline 
WA_T8PL01_STR-VALUE sy-vline 
WA_T8PL01_STR-INIT sy-vline 
WA_T8PL01_STR-HEAD_ROW sy-vline 
WA_T8PL01_STR-SUM_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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