ABAP Select data from SAP table PSLAWYER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSLAWYER
*  INTO TABLE @DATA(IT_PSLAWYER2).
*--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_PSLAWYER INDEX 1 INTO DATA(WA_PSLAWYER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSLAWYER>-KOKEY = 1.
<PSLAWYER>-KOFIR = 1.
<PSLAWYER>-KOABT = 1.
<PSLAWYER>-KOANR = 1.
<PSLAWYER>-KOTIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSLAWYER-KOVOR, sy-vline,
  WA_PSLAWYER-KONAM, sy-vline,
  WA_PSLAWYER-KOSTR, sy-vline,
  WA_PSLAWYER-KOLND, sy-vline,
  WA_PSLAWYER-KOPLZ, sy-vline,
  WA_PSLAWYER-KOORT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSLAWYER 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_PSLAWYER 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_PSLAWYER INTO WA_PSLAWYER.


*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_PSLAWYER_STR, 
KOKEY TYPE STRING,
KOFIR TYPE STRING,
KOABT TYPE STRING,
KOANR TYPE STRING,
KOTIT TYPE STRING,
KOVOR TYPE STRING,
KONAM TYPE STRING,
KOSTR TYPE STRING,
KOLND TYPE STRING,
KOPLZ TYPE STRING,
KOORT TYPE STRING,
KOTEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSLAWYER_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_PSLAWYER_STR-KOKEY sy-vline 
WA_PSLAWYER_STR-KOFIR sy-vline 
WA_PSLAWYER_STR-KOABT sy-vline 
WA_PSLAWYER_STR-KOANR sy-vline 
WA_PSLAWYER_STR-KOTIT sy-vline 
WA_PSLAWYER_STR-KOVOR sy-vline 
WA_PSLAWYER_STR-KONAM sy-vline 
WA_PSLAWYER_STR-KOSTR sy-vline 
WA_PSLAWYER_STR-KOLND sy-vline 
WA_PSLAWYER_STR-KOPLZ sy-vline 
WA_PSLAWYER_STR-KOORT sy-vline 
WA_PSLAWYER_STR-KOTEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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