ABAP Select data from SAP table CPMRPCHGINDMND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPMRPCHGINDMND
*  INTO TABLE @DATA(IT_CPMRPCHGINDMND2).
*--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_CPMRPCHGINDMND INDEX 1 INTO DATA(WA_CPMRPCHGINDMND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPMRPCHGINDMND>-MANDT = 1.
<CPMRPCHGINDMND>-PMRPSIMULATION = 1.
<CPMRPCHGINDMND>-TOPLEVELDEMANDINTERNALID = 1.
<CPMRPCHGINDMND>-PMRPREFERENCEPLAN = 1.
<CPMRPCHGINDMND>-TOPLEVELPRODUCT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPMRPCHGINDMND-TOPLEVELMRPAREA, sy-vline,
  WA_CPMRPCHGINDMND-MRPCONTROLLER, sy-vline,
  WA_CPMRPCHGINDMND-MRPCONTROLLERNAME, sy-vline,
  WA_CPMRPCHGINDMND-MATERIALNAME, sy-vline,
  WA_CPMRPCHGINDMND-PMRPBUCKETNAME, sy-vline,
  WA_CPMRPCHGINDMND-TOPLEVELPLANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPMRPCHGINDMND 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_CPMRPCHGINDMND 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_CPMRPCHGINDMND INTO WA_CPMRPCHGINDMND.


*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 TOPLEVELPRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CPMRPCHGINDMND-TOPLEVELPRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPMRPCHGINDMND-TOPLEVELPRODUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPMRPCHGINDMND-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPMRPCHGINDMND-UNITOFMEASURE.
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_CPMRPCHGINDMND_STR, 
MANDT TYPE STRING,
PMRPSIMULATION TYPE STRING,
TOPLEVELDEMANDINTERNALID TYPE STRING,
PMRPREFERENCEPLAN TYPE STRING,
TOPLEVELPRODUCT TYPE STRING,
TOPLEVELMRPAREA TYPE STRING,
MRPCONTROLLER TYPE STRING,
MRPCONTROLLERNAME TYPE STRING,
MATERIALNAME TYPE STRING,
PMRPBUCKETNAME TYPE STRING,
TOPLEVELPLANT TYPE STRING,
PLANTNAME TYPE STRING,
REFERENCEREQUIREDQUANTITY TYPE STRING,
SIMULATEDREQUIREDQUANTITY TYPE STRING,
DELTAQUANTITY TYPE STRING,
UNITOFMEASURE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPMRPCHGINDMND_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_CPMRPCHGINDMND_STR-MANDT sy-vline 
WA_CPMRPCHGINDMND_STR-PMRPSIMULATION sy-vline 
WA_CPMRPCHGINDMND_STR-TOPLEVELDEMANDINTERNALID sy-vline 
WA_CPMRPCHGINDMND_STR-PMRPREFERENCEPLAN sy-vline 
WA_CPMRPCHGINDMND_STR-TOPLEVELPRODUCT sy-vline 
WA_CPMRPCHGINDMND_STR-TOPLEVELMRPAREA sy-vline 
WA_CPMRPCHGINDMND_STR-MRPCONTROLLER sy-vline 
WA_CPMRPCHGINDMND_STR-MRPCONTROLLERNAME sy-vline 
WA_CPMRPCHGINDMND_STR-MATERIALNAME sy-vline 
WA_CPMRPCHGINDMND_STR-PMRPBUCKETNAME sy-vline 
WA_CPMRPCHGINDMND_STR-TOPLEVELPLANT sy-vline 
WA_CPMRPCHGINDMND_STR-PLANTNAME sy-vline 
WA_CPMRPCHGINDMND_STR-REFERENCEREQUIREDQUANTITY sy-vline 
WA_CPMRPCHGINDMND_STR-SIMULATEDREQUIREDQUANTITY sy-vline 
WA_CPMRPCHGINDMND_STR-DELTAQUANTITY sy-vline 
WA_CPMRPCHGINDMND_STR-UNITOFMEASURE sy-vline      INTO ld_text SEPARATED BY SPACE.

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