ABAP Select data from SAP table MMPUR_S_CCTR_API_HDR_MODIFY 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_CCTR_API_HDR_MODIFY 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_CCTR_API_HDR_MODIFY. 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_CCTR_API_HDR_MODIFY 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_CCTR_API_HDR_MODIFY TYPE STANDARD TABLE OF MMPUR_S_CCTR_API_HDR_MODIFY,
      WA_MMPUR_S_CCTR_API_HDR_MODIFY TYPE MMPUR_S_CCTR_API_HDR_MODIFY,
      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_CCTR_API_HDR_MODIFY> TYPE MMPUR_S_CCTR_API_HDR_MODIFY.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_S_CCTR_API_HDR_MODIFY
*  INTO TABLE @DATA(IT_MMPUR_S_CCTR_API_HDR_MODIFY2).
*--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_CCTR_API_HDR_MODIFY INDEX 1 INTO DATA(WA_MMPUR_S_CCTR_API_HDR_MODIFY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_S_CCTR_API_HDR_MODIFY>-CENTRALPURCHASECONTRACT = 1.
<MMPUR_S_CCTR_API_HDR_MODIFY>-PURGCONTRACTISINPREPARATION = 1.
<MMPUR_S_CCTR_API_HDR_MODIFY>-CENTRALPURCHASECONTRACTTYPE = 1.
<MMPUR_S_CCTR_API_HDR_MODIFY>-DESCRIPTION = 1.
<MMPUR_S_CCTR_API_HDR_MODIFY>-CREATIONDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_S_CCTR_API_HDR_MODIFY-SUPPLIER, sy-vline,
  WA_MMPUR_S_CCTR_API_HDR_MODIFY-COMPANYCODE, sy-vline,
  WA_MMPUR_S_CCTR_API_HDR_MODIFY-PURCHASINGORGANIZATION, sy-vline,
  WA_MMPUR_S_CCTR_API_HDR_MODIFY-PURCHASINGGROUP, sy-vline,
  WA_MMPUR_S_CCTR_API_HDR_MODIFY-DOCUMENTCURRENCY, sy-vline,
  WA_MMPUR_S_CCTR_API_HDR_MODIFY-INCOTERMSCLASSIFICATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_S_CCTR_API_HDR_MODIFY 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_CCTR_API_HDR_MODIFY 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_CCTR_API_HDR_MODIFY INTO WA_MMPUR_S_CCTR_API_HDR_MODIFY.


*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_MMPUR_S_CCTR_API_HDR_MODIFY-CENTRALPURCHASECONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_CCTR_API_HDR_MODIFY-CENTRALPURCHASECONTRACT.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field PURCHASINGPARENTDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_CCTR_API_HDR_MODIFY-PURCHASINGPARENTDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_CCTR_API_HDR_MODIFY-PURCHASINGPARENTDOCUMENT.
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_CCTR_API_HDR_MODIFY_STR, 
CENTRALPURCHASECONTRACT TYPE STRING,
PURGCONTRACTISINPREPARATION TYPE STRING,
CENTRALPURCHASECONTRACTTYPE TYPE STRING,
DESCRIPTION TYPE STRING,
CREATIONDATE TYPE STRING,
SUPPLIER TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
INCOTERMSCLASSIFICATION TYPE STRING,
INCOTERMSTRANSFERLOCATION TYPE STRING,
PAYMENTTERMS TYPE STRING,
CASHDISCOUNT1DAYS TYPE STRING,
CASHDISCOUNT2DAYS TYPE STRING,
NETPAYMENTDAYS TYPE STRING,
CASHDISCOUNT1PERCENT TYPE STRING,
CASHDISCOUNT2PERCENT TYPE STRING,
PURCHASECONTRACTTARGETAMOUNT TYPE STRING,
CREATEDBYUSER TYPE STRING,
SUPPLIERADDRESSID TYPE STRING,
SUPPLYINGSUPPLIER TYPE STRING,
INVOICINGPARTY TYPE STRING,
EXCHANGERATEISFIXED TYPE STRING,
QUOTATIONSUBMISSIONDATE TYPE STRING,
SUPPLIERQUOTATION TYPE STRING,
CORRESPNCEXTERNALREFERENCE TYPE STRING,
CORRESPNCINTERNALREFERENCE TYPE STRING,
SUPPLIERRESPSALESPERSONNAME TYPE STRING,
SUPPLIERPHONENUMBER TYPE STRING,
INCOTERMSVERSION TYPE STRING,
INCOTERMSLOCATION1 TYPE STRING,
INCOTERMSLOCATION2 TYPE STRING,
PURCHASINGDOCUMENTNAME TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
PURCHASINGDOCUMENTTYPENAME TYPE STRING,
CNTRLPURCONTRFLXBLDISTRISALLWD TYPE STRING,
PURCHASINGDOCUMENTSUBTYPE TYPE STRING,
PURCHASINGPARENTDOCUMENT TYPE STRING,
PROCMTHUBCOMPANYCODEGROUPINGID TYPE STRING,
EXTERNALREFERENCEDOCUMENTTYPE TYPE STRING,
DUMMY_EKKO_INCL_EEW_PS TYPE STRING,
PURCHASINGDOCVERSIONREASONCODE TYPE STRING,
HEADER_CONDITION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_S_CCTR_API_HDR_MODIFY_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_CCTR_API_HDR_MODIFY_STR-CENTRALPURCHASECONTRACT sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-PURGCONTRACTISINPREPARATION sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-CENTRALPURCHASECONTRACTTYPE sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-DESCRIPTION sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-CREATIONDATE sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-SUPPLIER sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-COMPANYCODE sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-PURCHASINGORGANIZATION sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-PURCHASINGGROUP sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-DOCUMENTCURRENCY sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-INCOTERMSCLASSIFICATION sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-INCOTERMSTRANSFERLOCATION sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-PAYMENTTERMS sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-CASHDISCOUNT1DAYS sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-CASHDISCOUNT2DAYS sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-NETPAYMENTDAYS sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-CASHDISCOUNT1PERCENT sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-CASHDISCOUNT2PERCENT sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-PURCHASECONTRACTTARGETAMOUNT sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-CREATEDBYUSER sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-SUPPLIERADDRESSID sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-SUPPLYINGSUPPLIER sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-INVOICINGPARTY sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-EXCHANGERATEISFIXED sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-QUOTATIONSUBMISSIONDATE sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-SUPPLIERQUOTATION sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-CORRESPNCEXTERNALREFERENCE sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-CORRESPNCINTERNALREFERENCE sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-SUPPLIERRESPSALESPERSONNAME sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-SUPPLIERPHONENUMBER sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-INCOTERMSVERSION sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-INCOTERMSLOCATION1 sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-INCOTERMSLOCATION2 sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-PURCHASINGDOCUMENTNAME sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-VALIDITYSTARTDATE sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-VALIDITYENDDATE sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-PURCHASINGDOCUMENTTYPENAME sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-CNTRLPURCONTRFLXBLDISTRISALLWD sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-PURCHASINGDOCUMENTSUBTYPE sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-PURCHASINGPARENTDOCUMENT sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-PROCMTHUBCOMPANYCODEGROUPINGID sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-EXTERNALREFERENCEDOCUMENTTYPE sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-DUMMY_EKKO_INCL_EEW_PS sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-PURCHASINGDOCVERSIONREASONCODE sy-vline 
WA_MMPUR_S_CCTR_API_HDR_MODIFY_STR-HEADER_CONDITION sy-vline      INTO ld_text SEPARATED BY SPACE.

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