ABAP Select data from SAP table WISP_LAYOUTS 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 WISP_LAYOUTS 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 WISP_LAYOUTS. 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 WISP_LAYOUTS 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_WISP_LAYOUTS TYPE STANDARD TABLE OF WISP_LAYOUTS,
      WA_WISP_LAYOUTS TYPE WISP_LAYOUTS,
      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: <WISP_LAYOUTS> TYPE WISP_LAYOUTS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WISP_LAYOUTS
*  INTO TABLE @DATA(IT_WISP_LAYOUTS2).
*--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_WISP_LAYOUTS INDEX 1 INTO DATA(WA_WISP_LAYOUTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WISP_LAYOUTS>-PLSZN = 1.
<WISP_LAYOUTS>-PLSCH = 1.
<WISP_LAYOUTS>-TABNAME = 1.
<WISP_LAYOUTS>-FORM = 1.
<WISP_LAYOUTS>-GDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WISP_LAYOUTS-MODNA, sy-vline,
  WA_WISP_LAYOUTS-MODDA, sy-vline,
  WA_WISP_LAYOUTS-MODTI, sy-vline,
  WA_WISP_LAYOUTS-TXTMT, sy-vline,
  WA_WISP_LAYOUTS-PERI37, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_WISP_LAYOUTS 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_WISP_LAYOUTS 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_WISP_LAYOUTS INTO WA_WISP_LAYOUTS.


*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_WISP_LAYOUTS_STR, 
PLSZN TYPE STRING,
PLSCH TYPE STRING,
TABNAME TYPE STRING,
FORM TYPE STRING,
GDATE TYPE STRING,
MODNA TYPE STRING,
MODDA TYPE STRING,
MODTI TYPE STRING,
TXTMT TYPE STRING,
PERI37 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WISP_LAYOUTS_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_WISP_LAYOUTS_STR-PLSZN sy-vline 
WA_WISP_LAYOUTS_STR-PLSCH sy-vline 
WA_WISP_LAYOUTS_STR-TABNAME sy-vline 
WA_WISP_LAYOUTS_STR-FORM sy-vline 
WA_WISP_LAYOUTS_STR-GDATE sy-vline 
WA_WISP_LAYOUTS_STR-MODNA sy-vline 
WA_WISP_LAYOUTS_STR-MODDA sy-vline 
WA_WISP_LAYOUTS_STR-MODTI sy-vline 
WA_WISP_LAYOUTS_STR-TXTMT sy-vline 
WA_WISP_LAYOUTS_STR-PERI37 sy-vline      INTO ld_text SEPARATED BY SPACE.

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