ABAP Select data from SAP table PDDPURREQDET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PDDPURREQDET
*  INTO TABLE @DATA(IT_PDDPURREQDET2).
*--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_PDDPURREQDET INDEX 1 INTO DATA(WA_PDDPURREQDET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PDDPURREQDET>-MANDT = 1.
<PDDPURREQDET>-PURCHASEREQUISITION = 1.
<PDDPURREQDET>-PURCHASEREQUISITIONITEM = 1.
<PDDPURREQDET>-MATERIAL = 1.
<PDDPURREQDET>-MATERIALNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PDDPURREQDET-PLANT, sy-vline,
  WA_PDDPURREQDET-MRPPLANT, sy-vline,
  WA_PDDPURREQDET-SUPPLYINGPLANT, sy-vline,
  WA_PDDPURREQDET-MATERIALPROCUREMENTCATEGORY, sy-vline,
  WA_PDDPURREQDET-MRPCONTROLLER, sy-vline,
  WA_PDDPURREQDET-PURCHASINGDOCUMENTCATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PDDPURREQDET 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_PDDPURREQDET 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_PDDPURREQDET INTO WA_PDDPURREQDET.


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

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

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

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

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

*Conversion exit SXIDN, internal->external for field PURCHASINGGROUPEMAILADDRESS
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_PDDPURREQDET-PURCHASINGGROUPEMAILADDRESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDDPURREQDET-PURCHASINGGROUPEMAILADDRESS.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field ORDERUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PDDPURREQDET-ORDERUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDDPURREQDET-ORDERUNIT.
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_PDDPURREQDET_STR, 
MANDT TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
MATERIAL TYPE STRING,
MATERIALNAME TYPE STRING,
PLANT TYPE STRING,
MRPPLANT TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
MATERIALPROCUREMENTCATEGORY TYPE STRING,
MRPCONTROLLER TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASEREQUISITIONTYPE TYPE STRING,
PURCHASEREQUISITIONISFIXED TYPE STRING,
PURCHASINGINFORECORD TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
SUPPLIERMATERIALNUMBER TYPE STRING,
MATERIALPLANNEDDELIVERYDURN TYPE STRING,
MATERIALGOODSRECEIPTDURATION TYPE STRING,
RELEASEDATE TYPE STRING,
DELIVERYDATE TYPE STRING,
PURCHASEOUTLINEAGREEMENT TYPE STRING,
PURCHASEOUTLINEAGREEMENTITEM TYPE STRING,
TOTALQUANTITY TYPE STRING,
ORDEREDQUANTITY TYPE STRING,
OPENQUANTITY TYPE STRING,
PURCHASEREQUISITIONUNIT TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGGROUPNAME TYPE STRING,
PURCHASINGGROUPPHONENUMBER TYPE STRING,
PURCHASINGGROUPEMAILADDRESS TYPE STRING,
SUPPLIER TYPE STRING,
FIXEDSUPPLIER TYPE STRING,
SUPPLIERISFIXED TYPE STRING,
ORDERUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PDDPURREQDET_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_PDDPURREQDET_STR-MANDT sy-vline 
WA_PDDPURREQDET_STR-PURCHASEREQUISITION sy-vline 
WA_PDDPURREQDET_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_PDDPURREQDET_STR-MATERIAL sy-vline 
WA_PDDPURREQDET_STR-MATERIALNAME sy-vline 
WA_PDDPURREQDET_STR-PLANT sy-vline 
WA_PDDPURREQDET_STR-MRPPLANT sy-vline 
WA_PDDPURREQDET_STR-SUPPLYINGPLANT sy-vline 
WA_PDDPURREQDET_STR-MATERIALPROCUREMENTCATEGORY sy-vline 
WA_PDDPURREQDET_STR-MRPCONTROLLER sy-vline 
WA_PDDPURREQDET_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_PDDPURREQDET_STR-PURCHASEREQUISITIONTYPE sy-vline 
WA_PDDPURREQDET_STR-PURCHASEREQUISITIONISFIXED sy-vline 
WA_PDDPURREQDET_STR-PURCHASINGINFORECORD sy-vline 
WA_PDDPURREQDET_STR-PURCHASINGORGANIZATION sy-vline 
WA_PDDPURREQDET_STR-SUPPLIERMATERIALNUMBER sy-vline 
WA_PDDPURREQDET_STR-MATERIALPLANNEDDELIVERYDURN sy-vline 
WA_PDDPURREQDET_STR-MATERIALGOODSRECEIPTDURATION sy-vline 
WA_PDDPURREQDET_STR-RELEASEDATE sy-vline 
WA_PDDPURREQDET_STR-DELIVERYDATE sy-vline 
WA_PDDPURREQDET_STR-PURCHASEOUTLINEAGREEMENT sy-vline 
WA_PDDPURREQDET_STR-PURCHASEOUTLINEAGREEMENTITEM sy-vline 
WA_PDDPURREQDET_STR-TOTALQUANTITY sy-vline 
WA_PDDPURREQDET_STR-ORDEREDQUANTITY sy-vline 
WA_PDDPURREQDET_STR-OPENQUANTITY sy-vline 
WA_PDDPURREQDET_STR-PURCHASEREQUISITIONUNIT sy-vline 
WA_PDDPURREQDET_STR-PURCHASINGGROUP sy-vline 
WA_PDDPURREQDET_STR-PURCHASINGGROUPNAME sy-vline 
WA_PDDPURREQDET_STR-PURCHASINGGROUPPHONENUMBER sy-vline 
WA_PDDPURREQDET_STR-PURCHASINGGROUPEMAILADDRESS sy-vline 
WA_PDDPURREQDET_STR-SUPPLIER sy-vline 
WA_PDDPURREQDET_STR-FIXEDSUPPLIER sy-vline 
WA_PDDPURREQDET_STR-SUPPLIERISFIXED sy-vline 
WA_PDDPURREQDET_STR-ORDERUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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