ABAP Select data from SAP table CMMCONTRLEAKAGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMMCONTRLEAKAGE
*  INTO TABLE @DATA(IT_CMMCONTRLEAKAGE2).
*--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_CMMCONTRLEAKAGE INDEX 1 INTO DATA(WA_CMMCONTRLEAKAGE2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMMCONTRLEAKAGE-PURCHASINGDOCUMENTTYPENAME, sy-vline,
  WA_CMMCONTRLEAKAGE-PURCHASEORDERITEMCATEGORY, sy-vline,
  WA_CMMCONTRLEAKAGE-PURGDOCITEMCATEGORYNAME, sy-vline,
  WA_CMMCONTRLEAKAGE-PURCHASECONTRACT, sy-vline,
  WA_CMMCONTRLEAKAGE-MATERIAL, sy-vline,
  WA_CMMCONTRLEAKAGE-MATERIALNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMMCONTRLEAKAGE 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_CMMCONTRLEAKAGE 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_CMMCONTRLEAKAGE INTO WA_CMMCONTRLEAKAGE.


*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_CMMCONTRLEAKAGE-PURCHASEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMCONTRLEAKAGE-PURCHASEORDER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ABPSP, internal->external for field WBSELEMENTINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CMMCONTRLEAKAGE-WBSELEMENTINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMCONTRLEAKAGE-WBSELEMENTINTERNALID.
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_CMMCONTRLEAKAGE_STR, 
MANDT TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
ACCOUNTASSIGNMENTNUMBER TYPE STRING,
PURCHASEORDERTYPE TYPE STRING,
PURCHASINGDOCUMENTTYPENAME TYPE STRING,
PURCHASEORDERITEMCATEGORY TYPE STRING,
PURGDOCITEMCATEGORYNAME TYPE STRING,
PURCHASECONTRACT TYPE STRING,
MATERIAL TYPE STRING,
MATERIALNAME TYPE STRING,
PURCHASINGCATEGORY TYPE STRING,
PURGCATNAME TYPE STRING,
MATERIALGROUP TYPE STRING,
MATERIALGROUPNAME TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERNAME TYPE STRING,
SUPPLIERCOUNTRY TYPE STRING,
COUNTRYNAME TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGORGANIZATIONNAME TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGGROUPNAME TYPE STRING,
PLANT TYPE STRING,
PLANTNAME TYPE STRING,
COMPANYCODE TYPE STRING,
COSTCENTER TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
CALENDARYEAR TYPE STRING,
CALENDARQUARTER TYPE STRING,
CALENDARMONTH TYPE STRING,
CALENDARWEEK TYPE STRING,
CREATEDBYUSER TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
LEAKAGEAMOUNTINDISPLAYCRCY TYPE STRING,
PURCHASEORDERNETAMOUNT TYPE STRING,
NONLEAKAGEAMTINDISPLAYCRCY TYPE STRING,
CONTRACTLEAKAGERATIO TYPE STRING,
CONTRACTLEAKAGERATEINPERCENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMMCONTRLEAKAGE_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_CMMCONTRLEAKAGE_STR-MANDT sy-vline 
WA_CMMCONTRLEAKAGE_STR-PURCHASEORDER sy-vline 
WA_CMMCONTRLEAKAGE_STR-PURCHASEORDERITEM sy-vline 
WA_CMMCONTRLEAKAGE_STR-ACCOUNTASSIGNMENTNUMBER sy-vline 
WA_CMMCONTRLEAKAGE_STR-PURCHASEORDERTYPE sy-vline 
WA_CMMCONTRLEAKAGE_STR-PURCHASINGDOCUMENTTYPENAME sy-vline 
WA_CMMCONTRLEAKAGE_STR-PURCHASEORDERITEMCATEGORY sy-vline 
WA_CMMCONTRLEAKAGE_STR-PURGDOCITEMCATEGORYNAME sy-vline 
WA_CMMCONTRLEAKAGE_STR-PURCHASECONTRACT sy-vline 
WA_CMMCONTRLEAKAGE_STR-MATERIAL sy-vline 
WA_CMMCONTRLEAKAGE_STR-MATERIALNAME sy-vline 
WA_CMMCONTRLEAKAGE_STR-PURCHASINGCATEGORY sy-vline 
WA_CMMCONTRLEAKAGE_STR-PURGCATNAME sy-vline 
WA_CMMCONTRLEAKAGE_STR-MATERIALGROUP sy-vline 
WA_CMMCONTRLEAKAGE_STR-MATERIALGROUPNAME sy-vline 
WA_CMMCONTRLEAKAGE_STR-SUPPLIER sy-vline 
WA_CMMCONTRLEAKAGE_STR-SUPPLIERNAME sy-vline 
WA_CMMCONTRLEAKAGE_STR-SUPPLIERCOUNTRY sy-vline 
WA_CMMCONTRLEAKAGE_STR-COUNTRYNAME sy-vline 
WA_CMMCONTRLEAKAGE_STR-PURCHASINGORGANIZATION sy-vline 
WA_CMMCONTRLEAKAGE_STR-PURCHASINGORGANIZATIONNAME sy-vline 
WA_CMMCONTRLEAKAGE_STR-PURCHASINGGROUP sy-vline 
WA_CMMCONTRLEAKAGE_STR-PURCHASINGGROUPNAME sy-vline 
WA_CMMCONTRLEAKAGE_STR-PLANT sy-vline 
WA_CMMCONTRLEAKAGE_STR-PLANTNAME sy-vline 
WA_CMMCONTRLEAKAGE_STR-COMPANYCODE sy-vline 
WA_CMMCONTRLEAKAGE_STR-COSTCENTER sy-vline 
WA_CMMCONTRLEAKAGE_STR-WBSELEMENTINTERNALID sy-vline 
WA_CMMCONTRLEAKAGE_STR-CALENDARYEAR sy-vline 
WA_CMMCONTRLEAKAGE_STR-CALENDARQUARTER sy-vline 
WA_CMMCONTRLEAKAGE_STR-CALENDARMONTH sy-vline 
WA_CMMCONTRLEAKAGE_STR-CALENDARWEEK sy-vline 
WA_CMMCONTRLEAKAGE_STR-CREATEDBYUSER sy-vline 
WA_CMMCONTRLEAKAGE_STR-DISPLAYCURRENCY sy-vline 
WA_CMMCONTRLEAKAGE_STR-LEAKAGEAMOUNTINDISPLAYCRCY sy-vline 
WA_CMMCONTRLEAKAGE_STR-PURCHASEORDERNETAMOUNT sy-vline 
WA_CMMCONTRLEAKAGE_STR-NONLEAKAGEAMTINDISPLAYCRCY sy-vline 
WA_CMMCONTRLEAKAGE_STR-CONTRACTLEAKAGERATIO sy-vline 
WA_CMMCONTRLEAKAGE_STR-CONTRACTLEAKAGERATEINPERCENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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