ABAP Select data from SAP table CMAINTORDUNPLMAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMAINTORDUNPLMAT
*  INTO TABLE @DATA(IT_CMAINTORDUNPLMAT2).
*--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_CMAINTORDUNPLMAT INDEX 1 INTO DATA(WA_CMAINTORDUNPLMAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMAINTORDUNPLMAT>-MANDT = 1.
<CMAINTORDUNPLMAT>-MATERIALDOCUMENT = 1.
<CMAINTORDUNPLMAT>-MATERIALDOCUMENTITEM = 1.
<CMAINTORDUNPLMAT>-MATERIALDOCUMENTYEAR = 1.
<CMAINTORDUNPLMAT>-MATERIAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMAINTORDUNPLMAT-STOCKIDENTIFYINGMATERIAL, sy-vline,
  WA_CMAINTORDUNPLMAT-WBSELEMENTINTERNALID, sy-vline,
  WA_CMAINTORDUNPLMAT-GOODSMOVEMENTTYPE, sy-vline,
  WA_CMAINTORDUNPLMAT-QUANTITYINBASEUNIT, sy-vline,
  WA_CMAINTORDUNPLMAT-MATERIALBASEUNIT, sy-vline,
  WA_CMAINTORDUNPLMAT-MAINTENANCEORDER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMAINTORDUNPLMAT 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_CMAINTORDUNPLMAT 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_CMAINTORDUNPLMAT INTO WA_CMAINTORDUNPLMAT.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field MAINTENANCEORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMAINTORDUNPLMAT-MAINTENANCEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMAINTORDUNPLMAT-MAINTENANCEORDER.
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_CMAINTORDUNPLMAT_STR, 
MANDT TYPE STRING,
MATERIALDOCUMENT TYPE STRING,
MATERIALDOCUMENTITEM TYPE STRING,
MATERIALDOCUMENTYEAR TYPE STRING,
MATERIAL TYPE STRING,
STOCKIDENTIFYINGMATERIAL TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
GOODSMOVEMENTTYPE TYPE STRING,
QUANTITYINBASEUNIT TYPE STRING,
MATERIALBASEUNIT TYPE STRING,
MAINTENANCEORDER TYPE STRING,
RESERVATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMAINTORDUNPLMAT_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_CMAINTORDUNPLMAT_STR-MANDT sy-vline 
WA_CMAINTORDUNPLMAT_STR-MATERIALDOCUMENT sy-vline 
WA_CMAINTORDUNPLMAT_STR-MATERIALDOCUMENTITEM sy-vline 
WA_CMAINTORDUNPLMAT_STR-MATERIALDOCUMENTYEAR sy-vline 
WA_CMAINTORDUNPLMAT_STR-MATERIAL sy-vline 
WA_CMAINTORDUNPLMAT_STR-STOCKIDENTIFYINGMATERIAL sy-vline 
WA_CMAINTORDUNPLMAT_STR-WBSELEMENTINTERNALID sy-vline 
WA_CMAINTORDUNPLMAT_STR-GOODSMOVEMENTTYPE sy-vline 
WA_CMAINTORDUNPLMAT_STR-QUANTITYINBASEUNIT sy-vline 
WA_CMAINTORDUNPLMAT_STR-MATERIALBASEUNIT sy-vline 
WA_CMAINTORDUNPLMAT_STR-MAINTENANCEORDER sy-vline 
WA_CMAINTORDUNPLMAT_STR-RESERVATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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