ABAP Select data from SAP table WSD_PURCHASING_STY 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 WSD_PURCHASING_STY 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 WSD_PURCHASING_STY. 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 WSD_PURCHASING_STY 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_WSD_PURCHASING_STY TYPE STANDARD TABLE OF WSD_PURCHASING_STY,
      WA_WSD_PURCHASING_STY TYPE WSD_PURCHASING_STY,
      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: <WSD_PURCHASING_STY> TYPE WSD_PURCHASING_STY.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSD_PURCHASING_STY
*  INTO TABLE @DATA(IT_WSD_PURCHASING_STY2).
*--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_WSD_PURCHASING_STY INDEX 1 INTO DATA(WA_WSD_PURCHASING_STY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WSD_PURCHASING_STY>-LIFNR = 1.
<WSD_PURCHASING_STY>-RELIF = 1.
<WSD_PURCHASING_STY>-LTSNR = 1.
<WSD_PURCHASING_STY>-IDNLF = 1.
<WSD_PURCHASING_STY>-LTSSF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WSD_PURCHASING_STY-WGLIF, sy-vline,
  WA_WSD_PURCHASING_STY-EKGRP, sy-vline,
  WA_WSD_PURCHASING_STY-EKORG, sy-vline,
  WA_WSD_PURCHASING_STY-NETPR, sy-vline,
  WA_WSD_PURCHASING_STY-PEINH, sy-vline,
  WA_WSD_PURCHASING_STY-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WSD_PURCHASING_STY 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_WSD_PURCHASING_STY 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_WSD_PURCHASING_STY INTO WA_WSD_PURCHASING_STY.


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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WSD_PURCHASING_STY-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSD_PURCHASING_STY-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GP_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WSD_PURCHASING_STY-GP_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSD_PURCHASING_STY-GP_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field NP_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WSD_PURCHASING_STY-NP_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSD_PURCHASING_STY-NP_UNIT.
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_WSD_PURCHASING_STY_STR, 
LIFNR TYPE STRING,
RELIF TYPE STRING,
LTSNR TYPE STRING,
IDNLF TYPE STRING,
LTSSF TYPE STRING,
WGLIF TYPE STRING,
EKGRP TYPE STRING,
EKORG TYPE STRING,
NETPR TYPE STRING,
PEINH TYPE STRING,
WAERS TYPE STRING,
PRDAT TYPE STRING,
APLFZ TYPE STRING,
MEINS TYPE STRING,
NORBM TYPE STRING,
GROSS_PRICE TYPE STRING,
GP_CURRENCY TYPE STRING,
GP_PRICE_QTY TYPE STRING,
GP_UNIT TYPE STRING,
NET_PRICE TYPE STRING,
NP_CURRENCY TYPE STRING,
NP_PRICE_QTY TYPE STRING,
NP_UNIT TYPE STRING,
NET_PRICE_VALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSD_PURCHASING_STY_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_WSD_PURCHASING_STY_STR-LIFNR sy-vline 
WA_WSD_PURCHASING_STY_STR-RELIF sy-vline 
WA_WSD_PURCHASING_STY_STR-LTSNR sy-vline 
WA_WSD_PURCHASING_STY_STR-IDNLF sy-vline 
WA_WSD_PURCHASING_STY_STR-LTSSF sy-vline 
WA_WSD_PURCHASING_STY_STR-WGLIF sy-vline 
WA_WSD_PURCHASING_STY_STR-EKGRP sy-vline 
WA_WSD_PURCHASING_STY_STR-EKORG sy-vline 
WA_WSD_PURCHASING_STY_STR-NETPR sy-vline 
WA_WSD_PURCHASING_STY_STR-PEINH sy-vline 
WA_WSD_PURCHASING_STY_STR-WAERS sy-vline 
WA_WSD_PURCHASING_STY_STR-PRDAT sy-vline 
WA_WSD_PURCHASING_STY_STR-APLFZ sy-vline 
WA_WSD_PURCHASING_STY_STR-MEINS sy-vline 
WA_WSD_PURCHASING_STY_STR-NORBM sy-vline 
WA_WSD_PURCHASING_STY_STR-GROSS_PRICE sy-vline 
WA_WSD_PURCHASING_STY_STR-GP_CURRENCY sy-vline 
WA_WSD_PURCHASING_STY_STR-GP_PRICE_QTY sy-vline 
WA_WSD_PURCHASING_STY_STR-GP_UNIT sy-vline 
WA_WSD_PURCHASING_STY_STR-NET_PRICE sy-vline 
WA_WSD_PURCHASING_STY_STR-NP_CURRENCY sy-vline 
WA_WSD_PURCHASING_STY_STR-NP_PRICE_QTY sy-vline 
WA_WSD_PURCHASING_STY_STR-NP_UNIT sy-vline 
WA_WSD_PURCHASING_STY_STR-NET_PRICE_VALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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