ABAP Select data from SAP table /SAPXCQM/PURCHASEDOC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPXCQM/PURCHASEDOC 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 /SAPXCQM/PURCHASEDOC. 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 /SAPXCQM/PURCHASEDOC 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_/SAPXCQM/PURCHASEDOC TYPE STANDARD TABLE OF /SAPXCQM/PURCHASEDOC,
      WA_/SAPXCQM/PURCHASEDOC TYPE /SAPXCQM/PURCHASEDOC,
      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: </SAPXCQM/PURCHASEDOC> TYPE /SAPXCQM/PURCHASEDOC.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPXCQM/PURCHASEDOC
  INTO TABLE IT_/SAPXCQM/PURCHASEDOC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPXCQM/PURCHASEDOC
*  INTO TABLE @DATA(IT_/SAPXCQM/PURCHASEDOC2).
*--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_/SAPXCQM/PURCHASEDOC INDEX 1 INTO DATA(WA_/SAPXCQM/PURCHASEDOC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPXCQM/PURCHASEDOC ASSIGNING </SAPXCQM/PURCHASEDOC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPXCQM/PURCHASEDOC>-PO_NUMBER = 1.
</SAPXCQM/PURCHASEDOC>-CO_CODE = 1.
</SAPXCQM/PURCHASEDOC>-PURCHDOC_TYPE = 1.
</SAPXCQM/PURCHASEDOC>-DELETE_IND = 1.
</SAPXCQM/PURCHASEDOC>-CHANGED_ON = 1.

ENDLOOP.

LOOP AT IT_/SAPXCQM/PURCHASEDOC INTO WA_/SAPXCQM/PURCHASEDOC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPXCQM/PURCHASEDOC-STATUS, sy-vline,
  WA_/SAPXCQM/PURCHASEDOC-VENDOR, sy-vline,
  WA_/SAPXCQM/PURCHASEDOC-CURRENCY, sy-vline,
  WA_/SAPXCQM/PURCHASEDOC-DOC_DATE, sy-vline,
  WA_/SAPXCQM/PURCHASEDOC-VPER_START, sy-vline,
  WA_/SAPXCQM/PURCHASEDOC-VPER_END, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPXCQM/PURCHASEDOC 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_/SAPXCQM/PURCHASEDOC 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_/SAPXCQM/PURCHASEDOC INTO WA_/SAPXCQM/PURCHASEDOC.


*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
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPXCQM/PURCHASEDOC-VENDOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPXCQM/PURCHASEDOC-VENDOR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SUPPL_VEND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPXCQM/PURCHASEDOC-SUPPL_VEND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPXCQM/PURCHASEDOC-SUPPL_VEND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPXCQM/PURCHASEDOC-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPXCQM/PURCHASEDOC-CUSTOMER.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field MFR_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPXCQM/PURCHASEDOC-MFR_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPXCQM/PURCHASEDOC-MFR_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INFO_REC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPXCQM/PURCHASEDOC-INFO_REC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPXCQM/PURCHASEDOC-INFO_REC.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field ORDERPR_UN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPXCQM/PURCHASEDOC-ORDERPR_UN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPXCQM/PURCHASEDOC-ORDERPR_UN.
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_/SAPXCQM/PURCHASEDOC_STR, 
PO_NUMBER TYPE STRING,
CO_CODE TYPE STRING,
PURCHDOC_TYPE TYPE STRING,
DELETE_IND TYPE STRING,
CHANGED_ON TYPE STRING,
STATUS TYPE STRING,
VENDOR TYPE STRING,
CURRENCY TYPE STRING,
DOC_DATE TYPE STRING,
VPER_START TYPE STRING,
VPER_END TYPE STRING,
REF_1 TYPE STRING,
SUPPL_VEND TYPE STRING,
CUSTOMER TYPE STRING,
HOLD TYPE STRING,
NO_MORE_GR TYPE STRING,
MATERIAL TYPE STRING,
PUR_MAT TYPE STRING,
VEND_MAT TYPE STRING,
MANU_MAT TYPE STRING,
MFR_NO TYPE STRING,
INFO_REC TYPE STRING,
STORE_LOC TYPE STRING,
PLANT TYPE STRING,
PO_QTY TYPE STRING,
UNIT TYPE STRING,
NET_PRICE TYPE STRING,
PRICE_UNIT TYPE STRING,
CONV_NUM1 TYPE STRING,
CONV_DEN1 TYPE STRING,
ORDERPR_UN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPXCQM/PURCHASEDOC_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_/SAPXCQM/PURCHASEDOC_STR-PO_NUMBER sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-CO_CODE sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-PURCHDOC_TYPE sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-DELETE_IND sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-CHANGED_ON sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-STATUS sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-VENDOR sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-CURRENCY sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-DOC_DATE sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-VPER_START sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-VPER_END sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-REF_1 sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-SUPPL_VEND sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-CUSTOMER sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-HOLD sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-NO_MORE_GR sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-MATERIAL sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-PUR_MAT sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-VEND_MAT sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-MANU_MAT sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-MFR_NO sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-INFO_REC sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-STORE_LOC sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-PLANT sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-PO_QTY sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-UNIT sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-NET_PRICE sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-PRICE_UNIT sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-CONV_NUM1 sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-CONV_DEN1 sy-vline 
WA_/SAPXCQM/PURCHASEDOC_STR-ORDERPR_UN sy-vline      INTO ld_text SEPARATED BY SPACE.

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