ABAP Select data from SAP table CMMMATLPRC3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CMMMATLPRC3 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 CMMMATLPRC3. 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 CMMMATLPRC3 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_CMMMATLPRC3 TYPE STANDARD TABLE OF CMMMATLPRC3,
      WA_CMMMATLPRC3 TYPE CMMMATLPRC3,
      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: <CMMMATLPRC3> TYPE CMMMATLPRC3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CMMMATLPRC3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CMMMATLPRC3
  INTO TABLE IT_CMMMATLPRC3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMMMATLPRC3
*  INTO TABLE @DATA(IT_CMMMATLPRC32).
*--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_CMMMATLPRC3 INDEX 1 INTO DATA(WA_CMMMATLPRC32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CMMMATLPRC3 ASSIGNING <CMMMATLPRC3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMMMATLPRC3>-MANDT = 1.
<CMMMATLPRC3>-PURCHASEORDER = 1.
<CMMMATLPRC3>-PURCHASEORDERITEM = 1.
<CMMMATLPRC3>-ACCOUNTASSIGNMENTNUMBER = 1.
<CMMMATLPRC3>-MATERIALDOCUMENTYEAR = 1.

ENDLOOP.

LOOP AT IT_CMMMATLPRC3 INTO WA_CMMMATLPRC3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMMMATLPRC3-INVOICE, sy-vline,
  WA_CMMMATLPRC3-MATERIALDOCUMENTITEM, sy-vline,
  WA_CMMMATLPRC3-INVOICEDATE, sy-vline,
  WA_CMMMATLPRC3-CALENDARYEAR, sy-vline,
  WA_CMMMATLPRC3-CALENDARMONTH, sy-vline,
  WA_CMMMATLPRC3-CALENDARQUARTER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMMMATLPRC3 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_CMMMATLPRC3 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_CMMMATLPRC3 INTO WA_CMMMATLPRC3.


*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 PURCHASEORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMMMATLPRC3-PURCHASEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMMATLPRC3-PURCHASEORDER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MATERIALDOCUMENTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CMMMATLPRC3-MATERIALDOCUMENTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMMATLPRC3-MATERIALDOCUMENTYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMMMATLPRC3-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMMATLPRC3-SUPPLIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CMMMATLPRC3-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMMATLPRC3-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PURCHASINGCATEGORY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMMMATLPRC3-PURCHASINGCATEGORY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMMATLPRC3-PURCHASINGCATEGORY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field WBSELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CMMMATLPRC3-WBSELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMMATLPRC3-WBSELEMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field COSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMMMATLPRC3-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMMATLPRC3-COSTCENTER.
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_CMMMATLPRC3_STR, 
MANDT TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
ACCOUNTASSIGNMENTNUMBER TYPE STRING,
MATERIALDOCUMENTYEAR TYPE STRING,
INVOICE TYPE STRING,
MATERIALDOCUMENTITEM TYPE STRING,
INVOICEDATE TYPE STRING,
CALENDARYEAR TYPE STRING,
CALENDARMONTH TYPE STRING,
CALENDARQUARTER TYPE STRING,
CALENDARWEEK TYPE STRING,
YEARWEEK TYPE STRING,
YEARMONTH TYPE STRING,
YEARQUARTER TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
COMPANYCODE TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERCOUNTRY TYPE STRING,
MATERIAL TYPE STRING,
MATERIALGROUP TYPE STRING,
PURCHASINGCATEGORY TYPE STRING,
PURGCATNAME TYPE STRING,
PLANT TYPE STRING,
WBSELEMENT TYPE STRING,
COSTCENTER TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
NUMBEROFINVOICES TYPE STRING,
INVOICEAMTINDISPLAYCURRENCY TYPE STRING,
PURCHASEORDERAMOUNT TYPE STRING,
QUANTITYINBASEUNIT TYPE STRING,
NETPRICEAMOUNT TYPE STRING,
WEIGHTEDNETPRICE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMMMATLPRC3_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_CMMMATLPRC3_STR-MANDT sy-vline 
WA_CMMMATLPRC3_STR-PURCHASEORDER sy-vline 
WA_CMMMATLPRC3_STR-PURCHASEORDERITEM sy-vline 
WA_CMMMATLPRC3_STR-ACCOUNTASSIGNMENTNUMBER sy-vline 
WA_CMMMATLPRC3_STR-MATERIALDOCUMENTYEAR sy-vline 
WA_CMMMATLPRC3_STR-INVOICE sy-vline 
WA_CMMMATLPRC3_STR-MATERIALDOCUMENTITEM sy-vline 
WA_CMMMATLPRC3_STR-INVOICEDATE sy-vline 
WA_CMMMATLPRC3_STR-CALENDARYEAR sy-vline 
WA_CMMMATLPRC3_STR-CALENDARMONTH sy-vline 
WA_CMMMATLPRC3_STR-CALENDARQUARTER sy-vline 
WA_CMMMATLPRC3_STR-CALENDARWEEK sy-vline 
WA_CMMMATLPRC3_STR-YEARWEEK sy-vline 
WA_CMMMATLPRC3_STR-YEARMONTH sy-vline 
WA_CMMMATLPRC3_STR-YEARQUARTER sy-vline 
WA_CMMMATLPRC3_STR-PURCHASINGORGANIZATION sy-vline 
WA_CMMMATLPRC3_STR-PURCHASINGGROUP sy-vline 
WA_CMMMATLPRC3_STR-COMPANYCODE sy-vline 
WA_CMMMATLPRC3_STR-SUPPLIER sy-vline 
WA_CMMMATLPRC3_STR-SUPPLIERCOUNTRY sy-vline 
WA_CMMMATLPRC3_STR-MATERIAL sy-vline 
WA_CMMMATLPRC3_STR-MATERIALGROUP sy-vline 
WA_CMMMATLPRC3_STR-PURCHASINGCATEGORY sy-vline 
WA_CMMMATLPRC3_STR-PURGCATNAME sy-vline 
WA_CMMMATLPRC3_STR-PLANT sy-vline 
WA_CMMMATLPRC3_STR-WBSELEMENT sy-vline 
WA_CMMMATLPRC3_STR-COSTCENTER sy-vline 
WA_CMMMATLPRC3_STR-DISPLAYCURRENCY sy-vline 
WA_CMMMATLPRC3_STR-NUMBEROFINVOICES sy-vline 
WA_CMMMATLPRC3_STR-INVOICEAMTINDISPLAYCURRENCY sy-vline 
WA_CMMMATLPRC3_STR-PURCHASEORDERAMOUNT sy-vline 
WA_CMMMATLPRC3_STR-QUANTITYINBASEUNIT sy-vline 
WA_CMMMATLPRC3_STR-NETPRICEAMOUNT sy-vline 
WA_CMMMATLPRC3_STR-WEIGHTEDNETPRICE sy-vline      INTO ld_text SEPARATED BY SPACE.

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