ABAP Select data from SAP table TN2DWSWL_WL_LAYO into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP TN2DWSWL_WL_LAYO 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 TN2DWSWL_WL_LAYO. 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 TN2DWSWL_WL_LAYO 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_TN2DWSWL_WL_LAYO TYPE STANDARD TABLE OF TN2DWSWL_WL_LAYO,
      WA_TN2DWSWL_WL_LAYO TYPE TN2DWSWL_WL_LAYO,
      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: <TN2DWSWL_WL_LAYO> TYPE TN2DWSWL_WL_LAYO.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TN2DWSWL_WL_LAYO.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TN2DWSWL_WL_LAYO
  INTO TABLE IT_TN2DWSWL_WL_LAYO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TN2DWSWL_WL_LAYO
*  INTO TABLE @DATA(IT_TN2DWSWL_WL_LAYO2).
*--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_TN2DWSWL_WL_LAYO INDEX 1 INTO DATA(WA_TN2DWSWL_WL_LAYO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TN2DWSWL_WL_LAYO ASSIGNING <TN2DWSWL_WL_LAYO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TN2DWSWL_WL_LAYO>-MANDT = 1.
<TN2DWSWL_WL_LAYO>-EINRI = 1.
<TN2DWSWL_WL_LAYO>-AREA = 1.
<TN2DWSWL_WL_LAYO>-SMALL_TITLE = 1.
<TN2DWSWL_WL_LAYO>-WORK_STATE_ICON = 1.

ENDLOOP.

LOOP AT IT_TN2DWSWL_WL_LAYO INTO WA_TN2DWSWL_WL_LAYO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TN2DWSWL_WL_LAYO-WORK_NOTE_ICON, sy-vline,
  WA_TN2DWSWL_WL_LAYO-WORK_NAME, sy-vline,
  WA_TN2DWSWL_WL_LAYO-WORK_ONE_WS, sy-vline,
  WA_TN2DWSWL_WL_LAYO-TASK_IN_PROCESS, sy-vline,
  WA_TN2DWSWL_WL_LAYO-TASK_STATE_ICON, sy-vline,
  WA_TN2DWSWL_WL_LAYO-TASK_IS_MANDATOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TN2DWSWL_WL_LAYO 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_TN2DWSWL_WL_LAYO 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_TN2DWSWL_WL_LAYO INTO WA_TN2DWSWL_WL_LAYO.


*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 ALPHA, internal->external for field EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TN2DWSWL_WL_LAYO-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TN2DWSWL_WL_LAYO-EINRI.
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_TN2DWSWL_WL_LAYO_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
AREA TYPE STRING,
SMALL_TITLE TYPE STRING,
WORK_STATE_ICON TYPE STRING,
WORK_NOTE_ICON TYPE STRING,
WORK_NAME TYPE STRING,
WORK_ONE_WS TYPE STRING,
TASK_IN_PROCESS TYPE STRING,
TASK_STATE_ICON TYPE STRING,
TASK_IS_MANDATOR TYPE STRING,
TASK_NOTE_ICON TYPE STRING,
TASK_RESPONSIBLE TYPE STRING,
TASK_PLAN_DATE TYPE STRING,
TASK_PRIORITY TYPE STRING,
WORK_PLAN_DATE TYPE STRING,
STRIPE_PATTERN TYPE STRING,
TASK_ACTION TYPE STRING,
HORIZONTAL_LINE TYPE STRING,
VERTICAL_LINE TYPE STRING,
WORK_IN_PROCESS TYPE STRING,
TASK_PRODUCED_BY TYPE STRING,
PATIENT_ORIENTED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TN2DWSWL_WL_LAYO_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_TN2DWSWL_WL_LAYO_STR-MANDT sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-EINRI sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-AREA sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-SMALL_TITLE sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-WORK_STATE_ICON sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-WORK_NOTE_ICON sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-WORK_NAME sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-WORK_ONE_WS sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-TASK_IN_PROCESS sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-TASK_STATE_ICON sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-TASK_IS_MANDATOR sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-TASK_NOTE_ICON sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-TASK_RESPONSIBLE sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-TASK_PLAN_DATE sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-TASK_PRIORITY sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-WORK_PLAN_DATE sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-STRIPE_PATTERN sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-TASK_ACTION sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-HORIZONTAL_LINE sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-VERTICAL_LINE sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-WORK_IN_PROCESS sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-TASK_PRODUCED_BY sy-vline 
WA_TN2DWSWL_WL_LAYO_STR-PATIENT_ORIENTED sy-vline      INTO ld_text SEPARATED BY SPACE.

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