ABAP Select data from SAP table P11_PAYE_TRAILER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P11_PAYE_TRAILER 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 P11_PAYE_TRAILER. 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 P11_PAYE_TRAILER 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_P11_PAYE_TRAILER TYPE STANDARD TABLE OF P11_PAYE_TRAILER,
      WA_P11_PAYE_TRAILER TYPE P11_PAYE_TRAILER,
      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: <P11_PAYE_TRAILER> TYPE P11_PAYE_TRAILER.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P11_PAYE_TRAILER.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P11_PAYE_TRAILER
  INTO TABLE IT_P11_PAYE_TRAILER.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P11_PAYE_TRAILER
*  INTO TABLE @DATA(IT_P11_PAYE_TRAILER2).
*--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_P11_PAYE_TRAILER INDEX 1 INTO DATA(WA_P11_PAYE_TRAILER2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P11_PAYE_TRAILER ASSIGNING <P11_PAYE_TRAILER>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P11_PAYE_TRAILER>-IDT = 1.
<P11_PAYE_TRAILER>-ERNIE = 1.
<P11_PAYE_TRAILER>-TCUTO = 1.
<P11_PAYE_TRAILER>-TMCUT = 1.
<P11_PAYE_TRAILER>-TWCUT = 1.

ENDLOOP.

LOOP AT IT_P11_PAYE_TRAILER INTO WA_P11_PAYE_TRAILER.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P11_PAYE_TRAILER-TTAXC, sy-vline,
  WA_P11_PAYE_TRAILER-TMTXC, sy-vline,
  WA_P11_PAYE_TRAILER-TWTXC, sy-vline,
  WA_P11_PAYE_TRAILER-RECNO, sy-vline,
  WA_P11_PAYE_TRAILER-SP127, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_P11_PAYE_TRAILER 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_P11_PAYE_TRAILER 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_P11_PAYE_TRAILER INTO WA_P11_PAYE_TRAILER.


*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_P11_PAYE_TRAILER_STR, 
IDT TYPE STRING,
ERNIE TYPE STRING,
TCUTO TYPE STRING,
TMCUT TYPE STRING,
TWCUT TYPE STRING,
TTAXC TYPE STRING,
TMTXC TYPE STRING,
TWTXC TYPE STRING,
RECNO TYPE STRING,
SP127 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P11_PAYE_TRAILER_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_P11_PAYE_TRAILER_STR-IDT sy-vline 
WA_P11_PAYE_TRAILER_STR-ERNIE sy-vline 
WA_P11_PAYE_TRAILER_STR-TCUTO sy-vline 
WA_P11_PAYE_TRAILER_STR-TMCUT sy-vline 
WA_P11_PAYE_TRAILER_STR-TWCUT sy-vline 
WA_P11_PAYE_TRAILER_STR-TTAXC sy-vline 
WA_P11_PAYE_TRAILER_STR-TMTXC sy-vline 
WA_P11_PAYE_TRAILER_STR-TWTXC sy-vline 
WA_P11_PAYE_TRAILER_STR-RECNO sy-vline 
WA_P11_PAYE_TRAILER_STR-SP127 sy-vline      INTO ld_text SEPARATED BY SPACE.

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