ABAP Select data from SAP table WSPO_ENTRY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSPO_ENTRY
*  INTO TABLE @DATA(IT_WSPO_ENTRY2).
*--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_WSPO_ENTRY INDEX 1 INTO DATA(WA_WSPO_ENTRY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WSPO_ENTRY>-VNDR_ID = 1.
<WSPO_ENTRY>-VNDR_TYPE = 1.
<WSPO_ENTRY>-VENDOR_NO = 1.
<WSPO_ENTRY>-PLANT = 1.
<WSPO_ENTRY>-VNDR_TYPE_D = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WSPO_ENTRY-VNDR_TYPE_INP, sy-vline,
  WA_WSPO_ENTRY-NAME_1, sy-vline,
  WA_WSPO_ENTRY-CITY, sy-vline,
  WA_WSPO_ENTRY-MAT_KEY_VNDR, sy-vline,
  WA_WSPO_ENTRY-MATERIAL_VNDR, sy-vline,
  WA_WSPO_ENTRY-MATID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WSPO_ENTRY 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_WSPO_ENTRY 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_WSPO_ENTRY INTO WA_WSPO_ENTRY.


*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 VENDOR_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WSPO_ENTRY-VENDOR_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSPO_ENTRY-VENDOR_NO.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field PO_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WSPO_ENTRY-PO_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSPO_ENTRY-PO_NUMBER.
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_WSPO_ENTRY_STR, 
VNDR_ID TYPE STRING,
VNDR_TYPE TYPE STRING,
VENDOR_NO TYPE STRING,
PLANT TYPE STRING,
VNDR_TYPE_D TYPE STRING,
VNDR_TYPE_INP TYPE STRING,
NAME_1 TYPE STRING,
CITY TYPE STRING,
MAT_KEY_VNDR TYPE STRING,
MATERIAL_VNDR TYPE STRING,
MATID TYPE STRING,
DOC_TYPE TYPE STRING,
DOC_DATE TYPE STRING,
DOC_DATE_CHAR TYPE STRING,
MAT_KEY_DOC TYPE STRING,
MATERIAL_DOC TYPE STRING,
RET_ITEM_ALL TYPE STRING,
PO_NUMBER TYPE STRING,
STATUS TYPE STRING,
MAT_KEY_VNDR_TYPED_IN TYPE STRING,
MAT_KEY_DOC_TYPED_IN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSPO_ENTRY_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_WSPO_ENTRY_STR-VNDR_ID sy-vline 
WA_WSPO_ENTRY_STR-VNDR_TYPE sy-vline 
WA_WSPO_ENTRY_STR-VENDOR_NO sy-vline 
WA_WSPO_ENTRY_STR-PLANT sy-vline 
WA_WSPO_ENTRY_STR-VNDR_TYPE_D sy-vline 
WA_WSPO_ENTRY_STR-VNDR_TYPE_INP sy-vline 
WA_WSPO_ENTRY_STR-NAME_1 sy-vline 
WA_WSPO_ENTRY_STR-CITY sy-vline 
WA_WSPO_ENTRY_STR-MAT_KEY_VNDR sy-vline 
WA_WSPO_ENTRY_STR-MATERIAL_VNDR sy-vline 
WA_WSPO_ENTRY_STR-MATID sy-vline 
WA_WSPO_ENTRY_STR-DOC_TYPE sy-vline 
WA_WSPO_ENTRY_STR-DOC_DATE sy-vline 
WA_WSPO_ENTRY_STR-DOC_DATE_CHAR sy-vline 
WA_WSPO_ENTRY_STR-MAT_KEY_DOC sy-vline 
WA_WSPO_ENTRY_STR-MATERIAL_DOC sy-vline 
WA_WSPO_ENTRY_STR-RET_ITEM_ALL sy-vline 
WA_WSPO_ENTRY_STR-PO_NUMBER sy-vline 
WA_WSPO_ENTRY_STR-STATUS sy-vline 
WA_WSPO_ENTRY_STR-MAT_KEY_VNDR_TYPED_IN sy-vline 
WA_WSPO_ENTRY_STR-MAT_KEY_DOC_TYPED_IN sy-vline      INTO ld_text SEPARATED BY SPACE.

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