ABAP Select data from SAP table MMPUR_S_CONTRACT_ITM_CND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_S_CONTRACT_ITM_CND
*  INTO TABLE @DATA(IT_MMPUR_S_CONTRACT_ITM_CND2).
*--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_MMPUR_S_CONTRACT_ITM_CND INDEX 1 INTO DATA(WA_MMPUR_S_CONTRACT_ITM_CND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_S_CONTRACT_ITM_CND>-PURCHASECONTRACT = 1.
<MMPUR_S_CONTRACT_ITM_CND>-PURCHASECONTRACTITEM = 1.
<MMPUR_S_CONTRACT_ITM_CND>-CONDITIONVALIDITYENDDATE = 1.
<MMPUR_S_CONTRACT_ITM_CND>-CONDITIONTYPE = 1.
<MMPUR_S_CONTRACT_ITM_CND>-CONDITIONRECORD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_S_CONTRACT_ITM_CND-CONDITIONSEQUENTIALNUMBER, sy-vline,
  WA_MMPUR_S_CONTRACT_ITM_CND-CONDITIONVALIDITYSTARTDATE, sy-vline,
  WA_MMPUR_S_CONTRACT_ITM_CND-CONDITIONRATEVALUE, sy-vline,
  WA_MMPUR_S_CONTRACT_ITM_CND-CONDITIONRATEVALUEUNIT, sy-vline,
  WA_MMPUR_S_CONTRACT_ITM_CND-CONDITIONQUANTITY, sy-vline,
  WA_MMPUR_S_CONTRACT_ITM_CND-CONDITIONQUANTITYUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_S_CONTRACT_ITM_CND 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_MMPUR_S_CONTRACT_ITM_CND 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_MMPUR_S_CONTRACT_ITM_CND INTO WA_MMPUR_S_CONTRACT_ITM_CND.


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

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

*Conversion exit CUNIT, internal->external for field CONDITIONSCALEQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_CONTRACT_ITM_CND-CONDITIONSCALEQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_CONTRACT_ITM_CND-CONDITIONSCALEQUANTITYUNIT.
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_MMPUR_S_CONTRACT_ITM_CND_STR, 
PURCHASECONTRACT TYPE STRING,
PURCHASECONTRACTITEM TYPE STRING,
CONDITIONVALIDITYENDDATE TYPE STRING,
CONDITIONTYPE TYPE STRING,
CONDITIONRECORD TYPE STRING,
CONDITIONSEQUENTIALNUMBER TYPE STRING,
CONDITIONVALIDITYSTARTDATE TYPE STRING,
CONDITIONRATEVALUE TYPE STRING,
CONDITIONRATEVALUEUNIT TYPE STRING,
CONDITIONQUANTITY TYPE STRING,
CONDITIONQUANTITYUNIT TYPE STRING,
CONDITIONAPPLICATION TYPE STRING,
CONDITIONCALCULATIONTYPE TYPE STRING,
PRICINGSCALETYPE TYPE STRING,
PRICINGSCALEBASIS TYPE STRING,
CONDITIONTOBASEQTYNMRTR TYPE STRING,
CONDITIONSCALEQUANTITYUNIT TYPE STRING,
CONDITIONSCALEAMOUNTCURRENCY TYPE STRING,
CONDITIONTOBASEQTYDNMNTR TYPE STRING,
CONDITIONCHANGEREASON TYPE STRING,
PROCMTHUBPLANTUNIQUEID TYPE STRING,
CONDITIONISDELETED TYPE STRING,
CONDITIONITEMQUANTITYSCALES TYPE STRING,
CONDITIONITEMVALUESCALES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_S_CONTRACT_ITM_CND_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_MMPUR_S_CONTRACT_ITM_CND_STR-PURCHASECONTRACT sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-PURCHASECONTRACTITEM sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONVALIDITYENDDATE sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONTYPE sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONRECORD sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONSEQUENTIALNUMBER sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONVALIDITYSTARTDATE sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONRATEVALUE sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONRATEVALUEUNIT sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONQUANTITY sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONQUANTITYUNIT sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONAPPLICATION sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONCALCULATIONTYPE sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-PRICINGSCALETYPE sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-PRICINGSCALEBASIS sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONTOBASEQTYNMRTR sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONSCALEQUANTITYUNIT sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONSCALEAMOUNTCURRENCY sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONTOBASEQTYDNMNTR sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONCHANGEREASON sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-PROCMTHUBPLANTUNIQUEID sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONISDELETED sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONITEMQUANTITYSCALES sy-vline 
WA_MMPUR_S_CONTRACT_ITM_CND_STR-CONDITIONITEMVALUESCALES sy-vline      INTO ld_text SEPARATED BY SPACE.

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