ABAP Select data from SAP table CMATCOVPOP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMATCOVPOP
*  INTO TABLE @DATA(IT_CMATCOVPOP2).
*--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_CMATCOVPOP INDEX 1 INTO DATA(WA_CMATCOVPOP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMATCOVPOP>-MANDT = 1.
<CMATCOVPOP>-MRPPLANT = 1.
<CMATCOVPOP>-MRPAREA = 1.
<CMATCOVPOP>-MATERIAL = 1.
<CMATCOVPOP>-MRPPLANNINGSEGMENTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMATCOVPOP-MATERIALSHORTAGEPROFILE, sy-vline,
  WA_CMATCOVPOP-MRPPLANNINGSEGMENT, sy-vline,
  WA_CMATCOVPOP-MATERIALSHORTAGEPROFILECOUNT, sy-vline,
  WA_CMATCOVPOP-FACTORYCALENDAR, sy-vline,
  WA_CMATCOVPOP-MATERIALNAME, sy-vline,
  WA_CMATCOVPOP-MRPCONTROLLER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMATCOVPOP 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_CMATCOVPOP 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_CMATCOVPOP INTO WA_CMATCOVPOP.


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

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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMATCOVPOP-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMATCOVPOP-SUPPLIER.
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_CMATCOVPOP_STR, 
MANDT TYPE STRING,
MRPPLANT TYPE STRING,
MRPAREA TYPE STRING,
MATERIAL TYPE STRING,
MRPPLANNINGSEGMENTTYPE TYPE STRING,
MATERIALSHORTAGEPROFILE TYPE STRING,
MRPPLANNINGSEGMENT TYPE STRING,
MATERIALSHORTAGEPROFILECOUNT TYPE STRING,
FACTORYCALENDAR TYPE STRING,
MATERIALNAME TYPE STRING,
MRPCONTROLLER TYPE STRING,
MATERIALBASEUNIT TYPE STRING,
MATERIALREPLNMTLEADDURNENDDATE TYPE STRING,
TOTALREPLNMTLEADDURNENDDATE TYPE STRING,
MANUALPLANNINGHORIZONENDDATE TYPE STRING,
MRPSAFETYDURATIONENDDATE TYPE STRING,
MATERIALSHORTAGEQUANTITY TYPE STRING,
EVALUATIONHORIZONINDAYS TYPE STRING,
MATERIALSHORTAGEDEFINITIONNAME TYPE STRING,
DAYSOFSUPPLYDURATION TYPE STRING,
AVAILABILITYCHART TYPE STRING,
WEEKLYAVAILABILITYCHART TYPE STRING,
MATERIALPROCUREMENTCATEGORY TYPE STRING,
MATERIALPROCUREMENTPROFILE TYPE STRING,
MRPTYPE TYPE STRING,
MATERIALPLANNEDDELIVERYDURN TYPE STRING,
MATERIALPLANNEDPRODUCTIONDURN TYPE STRING,
MRPSAFETYDURATION TYPE STRING,
PLANNINGTIMEFENCEINDAYS TYPE STRING,
PURCHASINGGROUP TYPE STRING,
MATERIALGOODSRECEIPTDURATION TYPE STRING,
MATERIALGROUP TYPE STRING,
MATERIALABCCLASSIFICATION TYPE STRING,
MRPGROUP TYPE STRING,
TOTALREPLENISHMENTLEADDURATION TYPE STRING,
MATERIALTYPENAME TYPE STRING,
MATERIALGROUPNAME TYPE STRING,
MATERIALSAFETYSTOCKQTY TYPE STRING,
MRPAVAILABLESTOCKQTY TYPE STRING,
HASMATERIALSHORTAGEREPLNMTLEAD TYPE STRING,
HASSHORTAGETOTALREPLNMTLEAD TYPE STRING,
HASSHORTAGEMANUALPLANHORIZON TYPE STRING,
HASSHORTAGEMRPSAFETYDURATION TYPE STRING,
UNITOFMEASUREDSPNMBROFDCMLS TYPE STRING,
MATERIALSHORTAGESTARTDATE TYPE STRING,
MATERIALSHORTAGEENDDATE TYPE STRING,
MATERIALSHORTAGEDEFINITION TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERNAME TYPE STRING,
NUMBEROFSUPPLIER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMATCOVPOP_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_CMATCOVPOP_STR-MANDT sy-vline 
WA_CMATCOVPOP_STR-MRPPLANT sy-vline 
WA_CMATCOVPOP_STR-MRPAREA sy-vline 
WA_CMATCOVPOP_STR-MATERIAL sy-vline 
WA_CMATCOVPOP_STR-MRPPLANNINGSEGMENTTYPE sy-vline 
WA_CMATCOVPOP_STR-MATERIALSHORTAGEPROFILE sy-vline 
WA_CMATCOVPOP_STR-MRPPLANNINGSEGMENT sy-vline 
WA_CMATCOVPOP_STR-MATERIALSHORTAGEPROFILECOUNT sy-vline 
WA_CMATCOVPOP_STR-FACTORYCALENDAR sy-vline 
WA_CMATCOVPOP_STR-MATERIALNAME sy-vline 
WA_CMATCOVPOP_STR-MRPCONTROLLER sy-vline 
WA_CMATCOVPOP_STR-MATERIALBASEUNIT sy-vline 
WA_CMATCOVPOP_STR-MATERIALREPLNMTLEADDURNENDDATE sy-vline 
WA_CMATCOVPOP_STR-TOTALREPLNMTLEADDURNENDDATE sy-vline 
WA_CMATCOVPOP_STR-MANUALPLANNINGHORIZONENDDATE sy-vline 
WA_CMATCOVPOP_STR-MRPSAFETYDURATIONENDDATE sy-vline 
WA_CMATCOVPOP_STR-MATERIALSHORTAGEQUANTITY sy-vline 
WA_CMATCOVPOP_STR-EVALUATIONHORIZONINDAYS sy-vline 
WA_CMATCOVPOP_STR-MATERIALSHORTAGEDEFINITIONNAME sy-vline 
WA_CMATCOVPOP_STR-DAYSOFSUPPLYDURATION sy-vline 
WA_CMATCOVPOP_STR-AVAILABILITYCHART sy-vline 
WA_CMATCOVPOP_STR-WEEKLYAVAILABILITYCHART sy-vline 
WA_CMATCOVPOP_STR-MATERIALPROCUREMENTCATEGORY sy-vline 
WA_CMATCOVPOP_STR-MATERIALPROCUREMENTPROFILE sy-vline 
WA_CMATCOVPOP_STR-MRPTYPE sy-vline 
WA_CMATCOVPOP_STR-MATERIALPLANNEDDELIVERYDURN sy-vline 
WA_CMATCOVPOP_STR-MATERIALPLANNEDPRODUCTIONDURN sy-vline 
WA_CMATCOVPOP_STR-MRPSAFETYDURATION sy-vline 
WA_CMATCOVPOP_STR-PLANNINGTIMEFENCEINDAYS sy-vline 
WA_CMATCOVPOP_STR-PURCHASINGGROUP sy-vline 
WA_CMATCOVPOP_STR-MATERIALGOODSRECEIPTDURATION sy-vline 
WA_CMATCOVPOP_STR-MATERIALGROUP sy-vline 
WA_CMATCOVPOP_STR-MATERIALABCCLASSIFICATION sy-vline 
WA_CMATCOVPOP_STR-MRPGROUP sy-vline 
WA_CMATCOVPOP_STR-TOTALREPLENISHMENTLEADDURATION sy-vline 
WA_CMATCOVPOP_STR-MATERIALTYPENAME sy-vline 
WA_CMATCOVPOP_STR-MATERIALGROUPNAME sy-vline 
WA_CMATCOVPOP_STR-MATERIALSAFETYSTOCKQTY sy-vline 
WA_CMATCOVPOP_STR-MRPAVAILABLESTOCKQTY sy-vline 
WA_CMATCOVPOP_STR-HASMATERIALSHORTAGEREPLNMTLEAD sy-vline 
WA_CMATCOVPOP_STR-HASSHORTAGETOTALREPLNMTLEAD sy-vline 
WA_CMATCOVPOP_STR-HASSHORTAGEMANUALPLANHORIZON sy-vline 
WA_CMATCOVPOP_STR-HASSHORTAGEMRPSAFETYDURATION sy-vline 
WA_CMATCOVPOP_STR-UNITOFMEASUREDSPNMBROFDCMLS sy-vline 
WA_CMATCOVPOP_STR-MATERIALSHORTAGESTARTDATE sy-vline 
WA_CMATCOVPOP_STR-MATERIALSHORTAGEENDDATE sy-vline 
WA_CMATCOVPOP_STR-MATERIALSHORTAGEDEFINITION sy-vline 
WA_CMATCOVPOP_STR-SUPPLIER sy-vline 
WA_CMATCOVPOP_STR-SUPPLIERNAME sy-vline 
WA_CMATCOVPOP_STR-NUMBEROFSUPPLIER sy-vline      INTO ld_text SEPARATED BY SPACE.

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