ABAP Select data from SAP table CGRCMATLMSTRCHG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CGRCMATLMSTRCHG
*  INTO TABLE @DATA(IT_CGRCMATLMSTRCHG2).
*--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_CGRCMATLMSTRCHG INDEX 1 INTO DATA(WA_CGRCMATLMSTRCHG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CGRCMATLMSTRCHG>-MANDT = 1.
<CGRCMATLMSTRCHG>-PRODUCT = 1.
<CGRCMATLMSTRCHG>-CHANGEDOCUMENT = 1.
<CGRCMATLMSTRCHG>-CHANGEDOCDATABASETABLEFIELD = 1.
<CGRCMATLMSTRCHG>-CHANGEDOCITEMCHANGETYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CGRCMATLMSTRCHG-CHANGEDOCCREATIONDATE, sy-vline,
  WA_CGRCMATLMSTRCHG-LASTCHANGEDBYUSER, sy-vline,
  WA_CGRCMATLMSTRCHG-CHANGEDOCNEWFIELDVALUE, sy-vline,
  WA_CGRCMATLMSTRCHG-CHANGEDOCPREVIOUSFIELDVALUE, sy-vline,
  WA_CGRCMATLMSTRCHG-CHANGEDOCNEWUNIT, sy-vline,
  WA_CGRCMATLMSTRCHG-CHANGEDOCPREVIOUSUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CGRCMATLMSTRCHG 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_CGRCMATLMSTRCHG 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_CGRCMATLMSTRCHG INTO WA_CGRCMATLMSTRCHG.


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

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

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

*Conversion exit ALPHA, internal->external for field CHANGEDOCOBJECTCLASS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CGRCMATLMSTRCHG-CHANGEDOCOBJECTCLASS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CGRCMATLMSTRCHG-CHANGEDOCOBJECTCLASS.
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_CGRCMATLMSTRCHG_STR, 
MANDT TYPE STRING,
PRODUCT TYPE STRING,
CHANGEDOCUMENT TYPE STRING,
CHANGEDOCDATABASETABLEFIELD TYPE STRING,
CHANGEDOCITEMCHANGETYPE TYPE STRING,
CHANGEDOCCREATIONDATE TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
CHANGEDOCNEWFIELDVALUE TYPE STRING,
CHANGEDOCPREVIOUSFIELDVALUE TYPE STRING,
CHANGEDOCNEWUNIT TYPE STRING,
CHANGEDOCPREVIOUSUNIT TYPE STRING,
CHANGEDOCNEWCURRENCY TYPE STRING,
CHANGEDOCPREVIOUSCURRENCY TYPE STRING,
PRODUCTEXTERNALID TYPE STRING,
PRODUCTTYPE TYPE STRING,
PRODUCTGROUP TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
ISMARKEDFORDELETION TYPE STRING,
CROSSPLANTSTATUS TYPE STRING,
CROSSPLANTSTATUSVALIDITYDATE TYPE STRING,
PRODUCTOLDID TYPE STRING,
SOURCEOFSUPPLY TYPE STRING,
COUNTRYOFORIGIN TYPE STRING,
ITEMCATEGORYGROUP TYPE STRING,
PRODUCTHIERARCHY TYPE STRING,
DIVISION TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
ANPCODE TYPE STRING,
PRODUCTCATEGORY TYPE STRING,
BRAND TYPE STRING,
PRODUCTISCONFIGURABLE TYPE STRING,
ISBATCHMANAGEMENTREQUIRED TYPE STRING,
HASEMPTIESBOM TYPE STRING,
EXTERNALPRODUCTGROUP TYPE STRING,
CROSSPLANTCONFIGURABLEPRODUCT TYPE STRING,
QLTYMGMTINPROCMTISACTIVE TYPE STRING,
ISAPPROVEDBATCHRECORDREQD TYPE STRING,
CHANGEDOCOBJECTCLASS TYPE STRING,
DATABASETABLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CGRCMATLMSTRCHG_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_CGRCMATLMSTRCHG_STR-MANDT sy-vline 
WA_CGRCMATLMSTRCHG_STR-PRODUCT sy-vline 
WA_CGRCMATLMSTRCHG_STR-CHANGEDOCUMENT sy-vline 
WA_CGRCMATLMSTRCHG_STR-CHANGEDOCDATABASETABLEFIELD sy-vline 
WA_CGRCMATLMSTRCHG_STR-CHANGEDOCITEMCHANGETYPE sy-vline 
WA_CGRCMATLMSTRCHG_STR-CHANGEDOCCREATIONDATE sy-vline 
WA_CGRCMATLMSTRCHG_STR-LASTCHANGEDBYUSER sy-vline 
WA_CGRCMATLMSTRCHG_STR-CHANGEDOCNEWFIELDVALUE sy-vline 
WA_CGRCMATLMSTRCHG_STR-CHANGEDOCPREVIOUSFIELDVALUE sy-vline 
WA_CGRCMATLMSTRCHG_STR-CHANGEDOCNEWUNIT sy-vline 
WA_CGRCMATLMSTRCHG_STR-CHANGEDOCPREVIOUSUNIT sy-vline 
WA_CGRCMATLMSTRCHG_STR-CHANGEDOCNEWCURRENCY sy-vline 
WA_CGRCMATLMSTRCHG_STR-CHANGEDOCPREVIOUSCURRENCY sy-vline 
WA_CGRCMATLMSTRCHG_STR-PRODUCTEXTERNALID sy-vline 
WA_CGRCMATLMSTRCHG_STR-PRODUCTTYPE sy-vline 
WA_CGRCMATLMSTRCHG_STR-PRODUCTGROUP sy-vline 
WA_CGRCMATLMSTRCHG_STR-CREATIONDATE sy-vline 
WA_CGRCMATLMSTRCHG_STR-CREATIONTIME sy-vline 
WA_CGRCMATLMSTRCHG_STR-CREATEDBYUSER sy-vline 
WA_CGRCMATLMSTRCHG_STR-ISMARKEDFORDELETION sy-vline 
WA_CGRCMATLMSTRCHG_STR-CROSSPLANTSTATUS sy-vline 
WA_CGRCMATLMSTRCHG_STR-CROSSPLANTSTATUSVALIDITYDATE sy-vline 
WA_CGRCMATLMSTRCHG_STR-PRODUCTOLDID sy-vline 
WA_CGRCMATLMSTRCHG_STR-SOURCEOFSUPPLY sy-vline 
WA_CGRCMATLMSTRCHG_STR-COUNTRYOFORIGIN sy-vline 
WA_CGRCMATLMSTRCHG_STR-ITEMCATEGORYGROUP sy-vline 
WA_CGRCMATLMSTRCHG_STR-PRODUCTHIERARCHY sy-vline 
WA_CGRCMATLMSTRCHG_STR-DIVISION sy-vline 
WA_CGRCMATLMSTRCHG_STR-AUTHORIZATIONGROUP sy-vline 
WA_CGRCMATLMSTRCHG_STR-ANPCODE sy-vline 
WA_CGRCMATLMSTRCHG_STR-PRODUCTCATEGORY sy-vline 
WA_CGRCMATLMSTRCHG_STR-BRAND sy-vline 
WA_CGRCMATLMSTRCHG_STR-PRODUCTISCONFIGURABLE sy-vline 
WA_CGRCMATLMSTRCHG_STR-ISBATCHMANAGEMENTREQUIRED sy-vline 
WA_CGRCMATLMSTRCHG_STR-HASEMPTIESBOM sy-vline 
WA_CGRCMATLMSTRCHG_STR-EXTERNALPRODUCTGROUP sy-vline 
WA_CGRCMATLMSTRCHG_STR-CROSSPLANTCONFIGURABLEPRODUCT sy-vline 
WA_CGRCMATLMSTRCHG_STR-QLTYMGMTINPROCMTISACTIVE sy-vline 
WA_CGRCMATLMSTRCHG_STR-ISAPPROVEDBATCHRECORDREQD sy-vline 
WA_CGRCMATLMSTRCHG_STR-CHANGEDOCOBJECTCLASS sy-vline 
WA_CGRCMATLMSTRCHG_STR-DATABASETABLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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