ABAP Select data from SAP table T59_PROTL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T59_PROTL 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 T59_PROTL. 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 T59_PROTL 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_T59_PROTL TYPE STANDARD TABLE OF T59_PROTL,
      WA_T59_PROTL TYPE T59_PROTL,
      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: <T59_PROTL> TYPE T59_PROTL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T59_PROTL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T59_PROTL
  INTO TABLE IT_T59_PROTL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T59_PROTL
*  INTO TABLE @DATA(IT_T59_PROTL2).
*--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_T59_PROTL INDEX 1 INTO DATA(WA_T59_PROTL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T59_PROTL ASSIGNING <T59_PROTL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T59_PROTL>-MANDT = 1.
<T59_PROTL>-SPRSL = 1.
<T59_PROTL>-APPLI = 1.
<T59_PROTL>-OTYPE = 1.
<T59_PROTL>-ONAME = 1.

ENDLOOP.

LOOP AT IT_T59_PROTL INTO WA_T59_PROTL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T59_PROTL-ASPCT, sy-vline,
  WA_T59_PROTL-LDATE, sy-vline,
  WA_T59_PROTL-LTIME, sy-vline,
  WA_T59_PROTL-RTYPE, sy-vline,
  WA_T59_PROTL-RNAME, sy-vline,
  WA_T59_PROTL-SEQNO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T59_PROTL 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_T59_PROTL 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_T59_PROTL INTO WA_T59_PROTL.


*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 ISOLA, internal->external for field SPRSL
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_T59_PROTL-SPRSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T59_PROTL-SPRSL.
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_T59_PROTL_STR, 
MANDT TYPE STRING,
SPRSL TYPE STRING,
APPLI TYPE STRING,
OTYPE TYPE STRING,
ONAME TYPE STRING,
ASPCT TYPE STRING,
LDATE TYPE STRING,
LTIME TYPE STRING,
RTYPE TYPE STRING,
RNAME TYPE STRING,
SEQNO TYPE STRING,
LINK_TYPE TYPE STRING,
RELAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T59_PROTL_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_T59_PROTL_STR-MANDT sy-vline 
WA_T59_PROTL_STR-SPRSL sy-vline 
WA_T59_PROTL_STR-APPLI sy-vline 
WA_T59_PROTL_STR-OTYPE sy-vline 
WA_T59_PROTL_STR-ONAME sy-vline 
WA_T59_PROTL_STR-ASPCT sy-vline 
WA_T59_PROTL_STR-LDATE sy-vline 
WA_T59_PROTL_STR-LTIME sy-vline 
WA_T59_PROTL_STR-RTYPE sy-vline 
WA_T59_PROTL_STR-RNAME sy-vline 
WA_T59_PROTL_STR-SEQNO sy-vline 
WA_T59_PROTL_STR-LINK_TYPE sy-vline 
WA_T59_PROTL_STR-RELAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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