ABAP Select data from SAP table CMMPURSPNDCOMP3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CMMPURSPNDCOMP3 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 CMMPURSPNDCOMP3. 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 CMMPURSPNDCOMP3 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_CMMPURSPNDCOMP3 TYPE STANDARD TABLE OF CMMPURSPNDCOMP3,
      WA_CMMPURSPNDCOMP3 TYPE CMMPURSPNDCOMP3,
      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: <CMMPURSPNDCOMP3> TYPE CMMPURSPNDCOMP3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CMMPURSPNDCOMP3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CMMPURSPNDCOMP3
  INTO TABLE IT_CMMPURSPNDCOMP3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMMPURSPNDCOMP3
*  INTO TABLE @DATA(IT_CMMPURSPNDCOMP32).
*--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_CMMPURSPNDCOMP3 INDEX 1 INTO DATA(WA_CMMPURSPNDCOMP32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CMMPURSPNDCOMP3 ASSIGNING <CMMPURSPNDCOMP3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMMPURSPNDCOMP3>-MANDT = 1.
<CMMPURSPNDCOMP3>-PURCHASEORDER = 1.
<CMMPURSPNDCOMP3>-PURCHASEORDERITEM = 1.
<CMMPURSPNDCOMP3>-ACCOUNTASSIGNMENTNUMBER = 1.
<CMMPURSPNDCOMP3>-COMPARISONSUPPLIER = 1.

ENDLOOP.

LOOP AT IT_CMMPURSPNDCOMP3 INTO WA_CMMPURSPNDCOMP3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMMPURSPNDCOMP3-SUPPLIER, sy-vline,
  WA_CMMPURSPNDCOMP3-SUPPLIERCOUNTRY, sy-vline,
  WA_CMMPURSPNDCOMP3-PURCHASINGORGANIZATION, sy-vline,
  WA_CMMPURSPNDCOMP3-PURCHASINGGROUP, sy-vline,
  WA_CMMPURSPNDCOMP3-COMPANYCODE, sy-vline,
  WA_CMMPURSPNDCOMP3-PURCHASEORDERDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMMPURSPNDCOMP3 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_CMMPURSPNDCOMP3 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_CMMPURSPNDCOMP3 INTO WA_CMMPURSPNDCOMP3.


*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_CMMPURSPNDCOMP3-PURCHASEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMPURSPNDCOMP3-PURCHASEORDER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field COMPARISONSUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMMPURSPNDCOMP3-COMPARISONSUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMPURSPNDCOMP3-COMPARISONSUPPLIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMMPURSPNDCOMP3-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMPURSPNDCOMP3-SUPPLIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CMMPURSPNDCOMP3-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMPURSPNDCOMP3-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SERVICEPERFORMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMMPURSPNDCOMP3-SERVICEPERFORMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMPURSPNDCOMP3-SERVICEPERFORMER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PURCHASINGCATEGORY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMMPURSPNDCOMP3-PURCHASINGCATEGORY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMPURSPNDCOMP3-PURCHASINGCATEGORY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field COSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMMPURSPNDCOMP3-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMPURSPNDCOMP3-COSTCENTER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field WBSELEMENTINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CMMPURSPNDCOMP3-WBSELEMENTINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMPURSPNDCOMP3-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_CMMPURSPNDCOMP3_STR, 
MANDT TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
ACCOUNTASSIGNMENTNUMBER TYPE STRING,
COMPARISONSUPPLIER TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERCOUNTRY TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASEORDERDATE TYPE STRING,
PURCHASEORDERCATEGORY TYPE STRING,
PURCHASEORDERTYPE TYPE STRING,
PURCHASEORDERITEMCATEGORY TYPE STRING,
MATERIALGROUP TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
PRODUCTTYPE TYPE STRING,
SERVICEPERFORMER TYPE STRING,
PURCHASINGCATEGORY TYPE STRING,
PURGCATNAME TYPE STRING,
COSTCENTER TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
CURRENCY TYPE STRING,
COMPARISONPURCHASINGGROUP TYPE STRING,
COMPARISONPURCHASINGORG TYPE STRING,
COMPARISONMATERIALGROUP TYPE STRING,
COMPARISONSUPPLIERCOUNTRY TYPE STRING,
CALENDARYEAR TYPE STRING,
CALENDARQUARTER TYPE STRING,
CALENDARMONTH TYPE STRING,
CALENDARWEEK TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
NETAMOUNTINDISPLAYCURRENCY TYPE STRING,
COMPARISONNETAMTINDSPCRCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMMPURSPNDCOMP3_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_CMMPURSPNDCOMP3_STR-MANDT sy-vline 
WA_CMMPURSPNDCOMP3_STR-PURCHASEORDER sy-vline 
WA_CMMPURSPNDCOMP3_STR-PURCHASEORDERITEM sy-vline 
WA_CMMPURSPNDCOMP3_STR-ACCOUNTASSIGNMENTNUMBER sy-vline 
WA_CMMPURSPNDCOMP3_STR-COMPARISONSUPPLIER sy-vline 
WA_CMMPURSPNDCOMP3_STR-SUPPLIER sy-vline 
WA_CMMPURSPNDCOMP3_STR-SUPPLIERCOUNTRY sy-vline 
WA_CMMPURSPNDCOMP3_STR-PURCHASINGORGANIZATION sy-vline 
WA_CMMPURSPNDCOMP3_STR-PURCHASINGGROUP sy-vline 
WA_CMMPURSPNDCOMP3_STR-COMPANYCODE sy-vline 
WA_CMMPURSPNDCOMP3_STR-PURCHASEORDERDATE sy-vline 
WA_CMMPURSPNDCOMP3_STR-PURCHASEORDERCATEGORY sy-vline 
WA_CMMPURSPNDCOMP3_STR-PURCHASEORDERTYPE sy-vline 
WA_CMMPURSPNDCOMP3_STR-PURCHASEORDERITEMCATEGORY sy-vline 
WA_CMMPURSPNDCOMP3_STR-MATERIALGROUP sy-vline 
WA_CMMPURSPNDCOMP3_STR-MATERIAL sy-vline 
WA_CMMPURSPNDCOMP3_STR-PLANT sy-vline 
WA_CMMPURSPNDCOMP3_STR-PRODUCTTYPE sy-vline 
WA_CMMPURSPNDCOMP3_STR-SERVICEPERFORMER sy-vline 
WA_CMMPURSPNDCOMP3_STR-PURCHASINGCATEGORY sy-vline 
WA_CMMPURSPNDCOMP3_STR-PURGCATNAME sy-vline 
WA_CMMPURSPNDCOMP3_STR-COSTCENTER sy-vline 
WA_CMMPURSPNDCOMP3_STR-WBSELEMENTINTERNALID sy-vline 
WA_CMMPURSPNDCOMP3_STR-CURRENCY sy-vline 
WA_CMMPURSPNDCOMP3_STR-COMPARISONPURCHASINGGROUP sy-vline 
WA_CMMPURSPNDCOMP3_STR-COMPARISONPURCHASINGORG sy-vline 
WA_CMMPURSPNDCOMP3_STR-COMPARISONMATERIALGROUP sy-vline 
WA_CMMPURSPNDCOMP3_STR-COMPARISONSUPPLIERCOUNTRY sy-vline 
WA_CMMPURSPNDCOMP3_STR-CALENDARYEAR sy-vline 
WA_CMMPURSPNDCOMP3_STR-CALENDARQUARTER sy-vline 
WA_CMMPURSPNDCOMP3_STR-CALENDARMONTH sy-vline 
WA_CMMPURSPNDCOMP3_STR-CALENDARWEEK sy-vline 
WA_CMMPURSPNDCOMP3_STR-DISPLAYCURRENCY sy-vline 
WA_CMMPURSPNDCOMP3_STR-NETAMOUNTINDISPLAYCURRENCY sy-vline 
WA_CMMPURSPNDCOMP3_STR-COMPARISONNETAMTINDSPCRCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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