ABAP Select data from SAP table MMPUR_PR_D_POIT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPUR_PR_D_POIT 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_PR_D_POIT.

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_PR_D_POIT 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_PR_D_POIT TYPE STANDARD TABLE OF MMPUR_PR_D_POIT,
      WA_MMPUR_PR_D_POIT TYPE MMPUR_PR_D_POIT,
      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_PR_D_POIT> TYPE MMPUR_PR_D_POIT.


*Original SAP ECC Select statement 
SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MMPUR_PR_D_POIT
  INTO TABLE IT_MMPUR_PR_D_POIT.

*Select data and declare internal table using  in-line method @DATA 
SELECT *
  FROM MMPUR_PR_D_POIT
  INTO TABLE @DATA(IT_MMPUR_PR_D_POIT2).

*You can also declare the header/work area using the  in-line DATA declaration method 
READ TABLE IT_MMPUR_PR_D_POIT INDEX 1 INTO DATA(WA_MMPUR_PR_D_POIT2).


*Latest ABAP cloud SELECT statement using the FIELDS syntax. But note to following the clean core principles you should not select directly from an SAP table 
* and should instead use a CDS view or create you own CDS and use that.
SELECT FROM MMPUR_PR_D_POIT
  FIELDS *
*  WHERE would go here
  INTO TABLE @DATA(IT_MMPUR_PR_D_POIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_PR_D_POIT>-MANDT = 1.
<MMPUR_PR_D_POIT>-DB_KEY = 1.
<MMPUR_PR_D_POIT>-ROOT_KEY = 1.
<MMPUR_PR_D_POIT>-PARENT_KEY = 1.
<MMPUR_PR_D_POIT>-EBELP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_PR_D_POIT-TXZ01, sy-vline,
  WA_MMPUR_PR_D_POIT-MATNR, sy-vline,
  WA_MMPUR_PR_D_POIT-MATERIAL_EXTERNAL, sy-vline,
  WA_MMPUR_PR_D_POIT-MATERIAL_GUID, sy-vline,
  WA_MMPUR_PR_D_POIT-MEINS, sy-vline,
  WA_MMPUR_PR_D_POIT-MENGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_PR_D_POIT 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_PR_D_POIT 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_PR_D_POIT INTO WA_MMPUR_PR_D_POIT.


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

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

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

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

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

*Conversion exit FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_PR_D_POIT-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_PR_D_POIT-FIPOS.
WRITE:/ 'New Value:', ld_input.

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

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