ABAP Select data from SAP table MMPUR_CENTRAL_CONTRACT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPUR_CENTRAL_CONTRACT 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_CENTRAL_CONTRACT. 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_CENTRAL_CONTRACT 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_CENTRAL_CONTRACT TYPE STANDARD TABLE OF MMPUR_CENTRAL_CONTRACT,
      WA_MMPUR_CENTRAL_CONTRACT TYPE MMPUR_CENTRAL_CONTRACT,
      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_CENTRAL_CONTRACT> TYPE MMPUR_CENTRAL_CONTRACT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_CENTRAL_CONTRACT
*  INTO TABLE @DATA(IT_MMPUR_CENTRAL_CONTRACT2).
*--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_CENTRAL_CONTRACT INDEX 1 INTO DATA(WA_MMPUR_CENTRAL_CONTRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_CENTRAL_CONTRACT>-REQUEST = 1.
<MMPUR_CENTRAL_CONTRACT>-PROCMTHUBLOGICALSYSTEM = 1.
<MMPUR_CENTRAL_CONTRACT>-PROCUREMENTHUBSOURCESYSTEM = 1.
<MMPUR_CENTRAL_CONTRACT>-VALUE_HELP_FILTER = 1.
<MMPUR_CENTRAL_CONTRACT>-RELEASE_ORDERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_CENTRAL_CONTRACT-RELEASE_ORDER_INFO, sy-vline,
  WA_MMPUR_CENTRAL_CONTRACT-CCTR_FROM, sy-vline,
  WA_MMPUR_CENTRAL_CONTRACT-CCTR_TO, sy-vline,
  WA_MMPUR_CENTRAL_CONTRACT-PACKET_SIZE, sy-vline,
  WA_MMPUR_CENTRAL_CONTRACT-LAST_RUN_TIMESTAMP, sy-vline,
  WA_MMPUR_CENTRAL_CONTRACT-EXTRACTION_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_CENTRAL_CONTRACT 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_CENTRAL_CONTRACT 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_CENTRAL_CONTRACT INTO WA_MMPUR_CENTRAL_CONTRACT.


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

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

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

*Conversion exit ALPHA, internal->external for field CENTRALPURCHASECONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_CENTRAL_CONTRACT-CENTRALPURCHASECONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_CENTRAL_CONTRACT-CENTRALPURCHASECONTRACT.
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_CENTRAL_CONTRACT_STR, 
REQUEST TYPE STRING,
PROCMTHUBLOGICALSYSTEM TYPE STRING,
PROCUREMENTHUBSOURCESYSTEM TYPE STRING,
VALUE_HELP_FILTER TYPE STRING,
RELEASE_ORDERS TYPE STRING,
RELEASE_ORDER_INFO TYPE STRING,
CCTR_FROM TYPE STRING,
CCTR_TO TYPE STRING,
PACKET_SIZE TYPE STRING,
LAST_RUN_TIMESTAMP TYPE STRING,
EXTRACTION_TYPE TYPE STRING,
SUPPLIER TYPE STRING,
RELEASE_ORDER_DETAILS TYPE STRING,
PACKETS TYPE STRING,
EXTRACTION_TYPE TYPE STRING,
LAST_RUN_TIMESTAMP TYPE STRING,
DISTRIBUTION TYPE STRING,
CENTRALPURCHASECONTRACT TYPE STRING,
DISTRRESPONSEMESSAGEUUID TYPE STRING,
PURCHASE_CONTRACT TYPE STRING,
SOURCE_LIST TYPE STRING,
RESPONSE TYPE STRING,
CONNECTED_SYSTEM_TYPE TYPE STRING,
PROCMTHUBBACKENDSYSTEMTYPE TYPE STRING,
ISCLOUDSYSTEM TYPE STRING,
STORAGE_LOCATIONS TYPE STRING,
PURCHASING_DOCUMENT_TYPES TYPE STRING,
PARTNERS TYPE STRING,
PURCHASING_GROUPS TYPE STRING,
MATERIALS TYPE STRING,
DISTRIBUTION TYPE STRING,
PROCMTHUBCNTRLCONTRISDISTRD TYPE STRING,
MESSAGES TYPE STRING,
RELEASE_ORDERS TYPE STRING,
RELEASE_ORDER_INFO TYPE STRING,
RELEASE_ORDER_DETAILS TYPE STRING,
DELTA_TIMESTAMP TYPE STRING,
MESSAGE TYPE STRING,
MSGTY TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
MSGV1_SRC TYPE STRING,
MSGV2_SRC TYPE STRING,
MSGV3_SRC TYPE STRING,
MSGV4_SRC TYPE STRING,
DETLEVEL TYPE STRING,
PROBCLASS TYPE STRING,
ALSORT TYPE STRING,
TIME_STMP TYPE STRING,
MSG_COUNT TYPE STRING,
CONTEXT TYPE STRING,
TABNAME TYPE STRING,
VALUE TYPE STRING,
PARAMS TYPE STRING,
T_PAR TYPE STRING,
CALLBACK TYPE STRING,
USEREXITP TYPE STRING,
USEREXITF TYPE STRING,
USEREXITT TYPE STRING,
ALTEXT TYPE STRING,
ARCHIVING_STATUS TYPE STRING,
PROCMTHUBMESSAGESTATUS TYPE STRING,
RESPONSE_MESSAGES TYPE STRING,
REFERENCE_DELIVERY_ADDRESSES TYPE STRING,
SUPPLIER_DELIVERY_ADDRESSES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_CENTRAL_CONTRACT_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_CENTRAL_CONTRACT_STR-REQUEST sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-PROCMTHUBLOGICALSYSTEM sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-PROCUREMENTHUBSOURCESYSTEM sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-VALUE_HELP_FILTER sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-RELEASE_ORDERS sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-RELEASE_ORDER_INFO sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-CCTR_FROM sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-CCTR_TO sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-PACKET_SIZE sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-LAST_RUN_TIMESTAMP sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-EXTRACTION_TYPE sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-SUPPLIER sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-RELEASE_ORDER_DETAILS sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-PACKETS sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-EXTRACTION_TYPE sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-LAST_RUN_TIMESTAMP sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-DISTRIBUTION sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-CENTRALPURCHASECONTRACT sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-DISTRRESPONSEMESSAGEUUID sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-PURCHASE_CONTRACT sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-SOURCE_LIST sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-RESPONSE sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-CONNECTED_SYSTEM_TYPE sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-PROCMTHUBBACKENDSYSTEMTYPE sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-ISCLOUDSYSTEM sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-STORAGE_LOCATIONS sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-PURCHASING_DOCUMENT_TYPES sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-PARTNERS sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-PURCHASING_GROUPS sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MATERIALS sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-DISTRIBUTION sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-PROCMTHUBCNTRLCONTRISDISTRD sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MESSAGES sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-RELEASE_ORDERS sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-RELEASE_ORDER_INFO sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-RELEASE_ORDER_DETAILS sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-DELTA_TIMESTAMP sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MESSAGE sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MSGTY sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MSGID sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MSGNO sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MSGV1 sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MSGV2 sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MSGV3 sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MSGV4 sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MSGV1_SRC sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MSGV2_SRC sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MSGV3_SRC sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MSGV4_SRC sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-DETLEVEL sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-PROBCLASS sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-ALSORT sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-TIME_STMP sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-MSG_COUNT sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-CONTEXT sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-TABNAME sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-VALUE sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-PARAMS sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-T_PAR sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-CALLBACK sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-USEREXITP sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-USEREXITF sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-USEREXITT sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-ALTEXT sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-ARCHIVING_STATUS sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-PROCMTHUBMESSAGESTATUS sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-RESPONSE_MESSAGES sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-REFERENCE_DELIVERY_ADDRESSES sy-vline 
WA_MMPUR_CENTRAL_CONTRACT_STR-SUPPLIER_DELIVERY_ADDRESSES sy-vline      INTO ld_text SEPARATED BY SPACE.

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