ABAP Select data from SAP table MMPUR_PRFOD_DI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_PRFOD_DI
*  INTO TABLE @DATA(IT_MMPUR_PRFOD_DI2).
*--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_MMPUR_PRFOD_DI INDEX 1 INTO DATA(WA_MMPUR_PRFOD_DI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_PRFOD_DI>-MANDT = 1.
<MMPUR_PRFOD_DI>-PURREQNFLLWONDOCDRFTHDRUUID = 1.
<MMPUR_PRFOD_DI>-PURREQNFLLWONDOCDRFTITMUUID = 1.
<MMPUR_PRFOD_DI>-PURCHASEREQUISITION = 1.
<MMPUR_PRFOD_DI>-PURCHASEREQUISITIONITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_PRFOD_DI-MATERIAL, sy-vline,
  WA_MMPUR_PRFOD_DI-PROCMTHUBMATERIALNAME, sy-vline,
  WA_MMPUR_PRFOD_DI-PROCMTHUBDELIVERYDATE, sy-vline,
  WA_MMPUR_PRFOD_DI-PROCMTHUBORDERQUANTITY, sy-vline,
  WA_MMPUR_PRFOD_DI-PROCMTHUBORDERQUANTITYUNIT, sy-vline,
  WA_MMPUR_PRFOD_DI-PROCMTHUBNETPRICEAMOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_PRFOD_DI 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_MMPUR_PRFOD_DI 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_MMPUR_PRFOD_DI INTO WA_MMPUR_PRFOD_DI.


*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_MMPUR_PRFOD_DI-PURCHASEREQUISITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_PRFOD_DI-PURCHASEREQUISITION.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field PROCMTHUBPURCHASINGINFORECORD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_PRFOD_DI-PROCMTHUBPURCHASINGINFORECORD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_PRFOD_DI-PROCMTHUBPURCHASINGINFORECORD.
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_MMPUR_PRFOD_DI_STR, 
MANDT TYPE STRING,
PURREQNFLLWONDOCDRFTHDRUUID TYPE STRING,
PURREQNFLLWONDOCDRFTITMUUID TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
MATERIAL TYPE STRING,
PROCMTHUBMATERIALNAME TYPE STRING,
PROCMTHUBDELIVERYDATE TYPE STRING,
PROCMTHUBORDERQUANTITY TYPE STRING,
PROCMTHUBORDERQUANTITYUNIT TYPE STRING,
PROCMTHUBNETPRICEAMOUNT TYPE STRING,
PROCMTHUBDOCUMENTCURRENCY TYPE STRING,
PROCMTHUBNETPRICEQUANTITY TYPE STRING,
PROCMTHUBORDERPRICEUNIT TYPE STRING,
PROCMTHUBTAXCODE TYPE STRING,
INVOICEISGOODSRECEIPTBASED TYPE STRING,
PROCMTHUBPURCHASECONTRACT TYPE STRING,
PROCMTHUBPURCHASECONTRACTITEM TYPE STRING,
PROCMTHUBPURCHASINGINFORECORD TYPE STRING,
PROCMTHUBPLANT TYPE STRING,
PURREQNISVALDINCNTRLREQNPROCG TYPE STRING,
PROCMTHUBACCTASSGMTCATEGORY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_PRFOD_DI_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_MMPUR_PRFOD_DI_STR-MANDT sy-vline 
WA_MMPUR_PRFOD_DI_STR-PURREQNFLLWONDOCDRFTHDRUUID sy-vline 
WA_MMPUR_PRFOD_DI_STR-PURREQNFLLWONDOCDRFTITMUUID sy-vline 
WA_MMPUR_PRFOD_DI_STR-PURCHASEREQUISITION sy-vline 
WA_MMPUR_PRFOD_DI_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_MMPUR_PRFOD_DI_STR-MATERIAL sy-vline 
WA_MMPUR_PRFOD_DI_STR-PROCMTHUBMATERIALNAME sy-vline 
WA_MMPUR_PRFOD_DI_STR-PROCMTHUBDELIVERYDATE sy-vline 
WA_MMPUR_PRFOD_DI_STR-PROCMTHUBORDERQUANTITY sy-vline 
WA_MMPUR_PRFOD_DI_STR-PROCMTHUBORDERQUANTITYUNIT sy-vline 
WA_MMPUR_PRFOD_DI_STR-PROCMTHUBNETPRICEAMOUNT sy-vline 
WA_MMPUR_PRFOD_DI_STR-PROCMTHUBDOCUMENTCURRENCY sy-vline 
WA_MMPUR_PRFOD_DI_STR-PROCMTHUBNETPRICEQUANTITY sy-vline 
WA_MMPUR_PRFOD_DI_STR-PROCMTHUBORDERPRICEUNIT sy-vline 
WA_MMPUR_PRFOD_DI_STR-PROCMTHUBTAXCODE sy-vline 
WA_MMPUR_PRFOD_DI_STR-INVOICEISGOODSRECEIPTBASED sy-vline 
WA_MMPUR_PRFOD_DI_STR-PROCMTHUBPURCHASECONTRACT sy-vline 
WA_MMPUR_PRFOD_DI_STR-PROCMTHUBPURCHASECONTRACTITEM sy-vline 
WA_MMPUR_PRFOD_DI_STR-PROCMTHUBPURCHASINGINFORECORD sy-vline 
WA_MMPUR_PRFOD_DI_STR-PROCMTHUBPLANT sy-vline 
WA_MMPUR_PRFOD_DI_STR-PURREQNISVALDINCNTRLREQNPROCG sy-vline 
WA_MMPUR_PRFOD_DI_STR-PROCMTHUBACCTASSGMTCATEGORY sy-vline      INTO ld_text SEPARATED BY SPACE.

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