ABAP Select data from SAP table MMRENEGOITEM_D into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMRENEGOITEM_D
*  INTO TABLE @DATA(IT_MMRENEGOITEM_D2).
*--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_MMRENEGOITEM_D INDEX 1 INTO DATA(WA_MMRENEGOITEM_D2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMRENEGOITEM_D>-MANDT = 1.
<MMRENEGOITEM_D>-RENEGOTIATIONHEADERUUID = 1.
<MMRENEGOITEM_D>-RENEGOTIATIONITEMUUID = 1.
<MMRENEGOITEM_D>-CENTRALPURCHASECONTRACT = 1.
<MMRENEGOITEM_D>-CENTRALPURCHASECONTRACTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMRENEGOITEM_D-PURCHASINGDOCUMENTITEMUNIQUEID, sy-vline,
  WA_MMRENEGOITEM_D-EXTSOURCESYSTEM, sy-vline,
  WA_MMRENEGOITEM_D-MATERIAL, sy-vline,
  WA_MMRENEGOITEM_D-PLANT, sy-vline,
  WA_MMRENEGOITEM_D-MATERIALGROUP, sy-vline,
  WA_MMRENEGOITEM_D-PURCHASINGDOCUMENTCATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMRENEGOITEM_D 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_MMRENEGOITEM_D 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_MMRENEGOITEM_D INTO WA_MMRENEGOITEM_D.


*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 CENTRALPURCHASECONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMRENEGOITEM_D-CENTRALPURCHASECONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMRENEGOITEM_D-CENTRALPURCHASECONTRACT.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CUNIT, internal->external for field ORDERPRICEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMRENEGOITEM_D-ORDERPRICEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMRENEGOITEM_D-ORDERPRICEUNIT.
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_MMRENEGOITEM_D_STR, 
MANDT TYPE STRING,
RENEGOTIATIONHEADERUUID TYPE STRING,
RENEGOTIATIONITEMUUID TYPE STRING,
CENTRALPURCHASECONTRACT TYPE STRING,
CENTRALPURCHASECONTRACTITEM TYPE STRING,
PURCHASINGDOCUMENTITEMUNIQUEID TYPE STRING,
EXTSOURCESYSTEM TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
MATERIALGROUP TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASECONTRACTTYPE TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERNAME TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGORGANIZATIONNAME TYPE STRING,
PURCHASINGGROUP TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
PROCESSINGSTATUS TYPE STRING,
PRODUCTTYPECODE TYPE STRING,
CONTRACTNETPRICEAMOUNT TYPE STRING,
TARGETQUANTITY TYPE STRING,
ORDERQUANTITYUNIT TYPE STRING,
TARGETAMOUNT TYPE STRING,
ORDERPRICEUNIT TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
ORDERPRICEUNITTOORDERUNITNMRTR TYPE STRING,
ORDPRICEUNITTOORDERUNITDNMNTR TYPE STRING,
PURCHASINGDOCUMENTITEMCATEGORY TYPE STRING,
ISDELETED TYPE STRING,
ISVALID TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTFIELDCHANGES TYPE STRING,
DUMMY_RENEGTTNITEM_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMRENEGOITEM_D_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_MMRENEGOITEM_D_STR-MANDT sy-vline 
WA_MMRENEGOITEM_D_STR-RENEGOTIATIONHEADERUUID sy-vline 
WA_MMRENEGOITEM_D_STR-RENEGOTIATIONITEMUUID sy-vline 
WA_MMRENEGOITEM_D_STR-CENTRALPURCHASECONTRACT sy-vline 
WA_MMRENEGOITEM_D_STR-CENTRALPURCHASECONTRACTITEM sy-vline 
WA_MMRENEGOITEM_D_STR-PURCHASINGDOCUMENTITEMUNIQUEID sy-vline 
WA_MMRENEGOITEM_D_STR-EXTSOURCESYSTEM sy-vline 
WA_MMRENEGOITEM_D_STR-MATERIAL sy-vline 
WA_MMRENEGOITEM_D_STR-PLANT sy-vline 
WA_MMRENEGOITEM_D_STR-MATERIALGROUP sy-vline 
WA_MMRENEGOITEM_D_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_MMRENEGOITEM_D_STR-PURCHASECONTRACTTYPE sy-vline 
WA_MMRENEGOITEM_D_STR-SUPPLIER sy-vline 
WA_MMRENEGOITEM_D_STR-SUPPLIERNAME sy-vline 
WA_MMRENEGOITEM_D_STR-PURCHASINGORGANIZATION sy-vline 
WA_MMRENEGOITEM_D_STR-PURCHASINGORGANIZATIONNAME sy-vline 
WA_MMRENEGOITEM_D_STR-PURCHASINGGROUP sy-vline 
WA_MMRENEGOITEM_D_STR-VALIDITYSTARTDATE sy-vline 
WA_MMRENEGOITEM_D_STR-VALIDITYENDDATE sy-vline 
WA_MMRENEGOITEM_D_STR-PROCESSINGSTATUS sy-vline 
WA_MMRENEGOITEM_D_STR-PRODUCTTYPECODE sy-vline 
WA_MMRENEGOITEM_D_STR-CONTRACTNETPRICEAMOUNT sy-vline 
WA_MMRENEGOITEM_D_STR-TARGETQUANTITY sy-vline 
WA_MMRENEGOITEM_D_STR-ORDERQUANTITYUNIT sy-vline 
WA_MMRENEGOITEM_D_STR-TARGETAMOUNT sy-vline 
WA_MMRENEGOITEM_D_STR-ORDERPRICEUNIT sy-vline 
WA_MMRENEGOITEM_D_STR-DOCUMENTCURRENCY sy-vline 
WA_MMRENEGOITEM_D_STR-ORDERPRICEUNITTOORDERUNITNMRTR sy-vline 
WA_MMRENEGOITEM_D_STR-ORDPRICEUNITTOORDERUNITDNMNTR sy-vline 
WA_MMRENEGOITEM_D_STR-PURCHASINGDOCUMENTITEMCATEGORY sy-vline 
WA_MMRENEGOITEM_D_STR-ISDELETED sy-vline 
WA_MMRENEGOITEM_D_STR-ISVALID sy-vline 
WA_MMRENEGOITEM_D_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_MMRENEGOITEM_D_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_MMRENEGOITEM_D_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_MMRENEGOITEM_D_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_MMRENEGOITEM_D_STR-HASACTIVEENTITY sy-vline 
WA_MMRENEGOITEM_D_STR-DRAFTFIELDCHANGES sy-vline 
WA_MMRENEGOITEM_D_STR-DUMMY_RENEGTTNITEM_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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