ABAP Select data from SAP table MMPUR_S_CCTR_DISTRCONTR 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_DISTRCONTR 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_DISTRCONTR. 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_DISTRCONTR 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_DISTRCONTR TYPE STANDARD TABLE OF MMPUR_S_CCTR_DISTRCONTR,
      WA_MMPUR_S_CCTR_DISTRCONTR TYPE MMPUR_S_CCTR_DISTRCONTR,
      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_DISTRCONTR> TYPE MMPUR_S_CCTR_DISTRCONTR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_S_CCTR_DISTRCONTR
*  INTO TABLE @DATA(IT_MMPUR_S_CCTR_DISTRCONTR2).
*--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_DISTRCONTR INDEX 1 INTO DATA(WA_MMPUR_S_CCTR_DISTRCONTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_S_CCTR_DISTRCONTR>-MANDT = 1.
<MMPUR_S_CCTR_DISTRCONTR>-COMPANYCODE = 1.
<MMPUR_S_CCTR_DISTRCONTR>-EXTCONTRACTFORPURG = 1.
<MMPUR_S_CCTR_DISTRCONTR>-PROCUREMENTHUBSOURCESYSTEM = 1.
<MMPUR_S_CCTR_DISTRCONTR>-PURCHASINGORGANIZATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_S_CCTR_DISTRCONTR-PURCHASINGGROUP, sy-vline,
  WA_MMPUR_S_CCTR_DISTRCONTR-DISTRRESPONSEMESSAGEUUID, sy-vline,
  WA_MMPUR_S_CCTR_DISTRCONTR-CENTRALPURCHASECONTRACT, sy-vline,
  WA_MMPUR_S_CCTR_DISTRCONTR-PURCHASINGDOCUMENTCATEGORY, sy-vline,
  WA_MMPUR_S_CCTR_DISTRCONTR-DISTRIBUTIONKEY, sy-vline,
  WA_MMPUR_S_CCTR_DISTRCONTR-CENTRALPURCHASECONTRACTITEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_S_CCTR_DISTRCONTR 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_DISTRCONTR 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_DISTRCONTR INTO WA_MMPUR_S_CCTR_DISTRCONTR.


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

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

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

*Conversion exit ALPHA, internal->external for field LOGICALSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_CCTR_DISTRCONTR-LOGICALSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_CCTR_DISTRCONTR-LOGICALSYSTEM.
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_DISTRCONTR_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
EXTCONTRACTFORPURG TYPE STRING,
PROCUREMENTHUBSOURCESYSTEM TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
DISTRRESPONSEMESSAGEUUID TYPE STRING,
CENTRALPURCHASECONTRACT TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
DISTRIBUTIONKEY TYPE STRING,
CENTRALPURCHASECONTRACTITEM TYPE STRING,
PLANT TYPE STRING,
PURCHASINGDOCUMENTCATEGORYNAME TYPE STRING,
ITEMDISTRIBUTIONSTATUS TYPE STRING,
SOURCELISTISUPDATED TYPE STRING,
SRCELISTRESPONSEMSGUUID TYPE STRING,
ITEMDISTRIBUTIONSTATUSNAME TYPE STRING,
SOURCELISTCHANGECONFSTATUS TYPE STRING,
SOURCELISTCHGCONFSTSDESC TYPE STRING,
LOGICALSYSTEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_S_CCTR_DISTRCONTR_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_DISTRCONTR_STR-MANDT sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-COMPANYCODE sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-EXTCONTRACTFORPURG sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-PROCUREMENTHUBSOURCESYSTEM sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-PURCHASINGORGANIZATION sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-PURCHASINGGROUP sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-DISTRRESPONSEMESSAGEUUID sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-CENTRALPURCHASECONTRACT sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-DISTRIBUTIONKEY sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-CENTRALPURCHASECONTRACTITEM sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-PLANT sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-PURCHASINGDOCUMENTCATEGORYNAME sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-ITEMDISTRIBUTIONSTATUS sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-SOURCELISTISUPDATED sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-SRCELISTRESPONSEMSGUUID sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-ITEMDISTRIBUTIONSTATUSNAME sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-SOURCELISTCHANGECONFSTATUS sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-SOURCELISTCHGCONFSTSDESC sy-vline 
WA_MMPUR_S_CCTR_DISTRCONTR_STR-LOGICALSYSTEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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