ABAP Select data from SAP table WINT_WLK2 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 WINT_WLK2 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 WINT_WLK2. 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 WINT_WLK2 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_WINT_WLK2 TYPE STANDARD TABLE OF WINT_WLK2,
      WA_WINT_WLK2 TYPE WINT_WLK2,
      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: <WINT_WLK2> TYPE WINT_WLK2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WINT_WLK2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WINT_WLK2
  INTO TABLE IT_WINT_WLK2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WINT_WLK2
*  INTO TABLE @DATA(IT_WINT_WLK22).
*--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_WINT_WLK2 INDEX 1 INTO DATA(WA_WINT_WLK22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WINT_WLK2 ASSIGNING <WINT_WLK2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WINT_WLK2>-FLAG1 = 1.
<WINT_WLK2>-MANDTOLD = 1.
<WINT_WLK2>-MATNROLD = 1.
<WINT_WLK2>-VKORGOLD = 1.
<WINT_WLK2>-VTWEGOLD = 1.

ENDLOOP.

LOOP AT IT_WINT_WLK2 INTO WA_WINT_WLK2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WINT_WLK2-WERKSOLD, sy-vline,
  WA_WINT_WLK2-DATAEOLD, sy-vline,
  WA_WINT_WLK2-AENAMOLD, sy-vline,
  WA_WINT_WLK2-KWDHTOLD, sy-vline,
  WA_WINT_WLK2-PRERFOLD, sy-vline,
  WA_WINT_WLK2-VKDABOLD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WINT_WLK2 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_WINT_WLK2 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_WINT_WLK2 INTO WA_WINT_WLK2.


*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 MATN1, internal->external for field MATNROLD
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WINT_WLK2-MATNROLD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WINT_WLK2-MATNROLD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNRNEW
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WINT_WLK2-MATNRNEW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WINT_WLK2-MATNRNEW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WINT_WLK2-LOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WINT_WLK2-LOCNR.
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_WINT_WLK2_STR, 
FLAG1 TYPE STRING,
MANDTOLD TYPE STRING,
MATNROLD TYPE STRING,
VKORGOLD TYPE STRING,
VTWEGOLD TYPE STRING,
WERKSOLD TYPE STRING,
DATAEOLD TYPE STRING,
AENAMOLD TYPE STRING,
KWDHTOLD TYPE STRING,
PRERFOLD TYPE STRING,
VKDABOLD TYPE STRING,
VKBISOLD TYPE STRING,
MSTAVOLD TYPE STRING,
MSTDVOLD TYPE STRING,
RBZULOLD TYPE STRING,
SCAGROLD TYPE STRING,
MANDTNEW TYPE STRING,
MATNRNEW TYPE STRING,
VKORGNEW TYPE STRING,
VTWEGNEW TYPE STRING,
WERKSNEW TYPE STRING,
DATAENEW TYPE STRING,
AENAMNEW TYPE STRING,
KWDHTNEW TYPE STRING,
PRERFNEW TYPE STRING,
VKDABNEW TYPE STRING,
VKBISNEW TYPE STRING,
MSTAVNEW TYPE STRING,
MSTDVNEW TYPE STRING,
RBZULNEW TYPE STRING,
SCAGRNEW TYPE STRING,
LOCNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WINT_WLK2_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_WINT_WLK2_STR-FLAG1 sy-vline 
WA_WINT_WLK2_STR-MANDTOLD sy-vline 
WA_WINT_WLK2_STR-MATNROLD sy-vline 
WA_WINT_WLK2_STR-VKORGOLD sy-vline 
WA_WINT_WLK2_STR-VTWEGOLD sy-vline 
WA_WINT_WLK2_STR-WERKSOLD sy-vline 
WA_WINT_WLK2_STR-DATAEOLD sy-vline 
WA_WINT_WLK2_STR-AENAMOLD sy-vline 
WA_WINT_WLK2_STR-KWDHTOLD sy-vline 
WA_WINT_WLK2_STR-PRERFOLD sy-vline 
WA_WINT_WLK2_STR-VKDABOLD sy-vline 
WA_WINT_WLK2_STR-VKBISOLD sy-vline 
WA_WINT_WLK2_STR-MSTAVOLD sy-vline 
WA_WINT_WLK2_STR-MSTDVOLD sy-vline 
WA_WINT_WLK2_STR-RBZULOLD sy-vline 
WA_WINT_WLK2_STR-SCAGROLD sy-vline 
WA_WINT_WLK2_STR-MANDTNEW sy-vline 
WA_WINT_WLK2_STR-MATNRNEW sy-vline 
WA_WINT_WLK2_STR-VKORGNEW sy-vline 
WA_WINT_WLK2_STR-VTWEGNEW sy-vline 
WA_WINT_WLK2_STR-WERKSNEW sy-vline 
WA_WINT_WLK2_STR-DATAENEW sy-vline 
WA_WINT_WLK2_STR-AENAMNEW sy-vline 
WA_WINT_WLK2_STR-KWDHTNEW sy-vline 
WA_WINT_WLK2_STR-PRERFNEW sy-vline 
WA_WINT_WLK2_STR-VKDABNEW sy-vline 
WA_WINT_WLK2_STR-VKBISNEW sy-vline 
WA_WINT_WLK2_STR-MSTAVNEW sy-vline 
WA_WINT_WLK2_STR-MSTDVNEW sy-vline 
WA_WINT_WLK2_STR-RBZULNEW sy-vline 
WA_WINT_WLK2_STR-SCAGRNEW sy-vline 
WA_WINT_WLK2_STR-LOCNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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