ABAP Select data from SAP table CDISTRCONTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CDISTRCONTR
*  INTO TABLE @DATA(IT_CDISTRCONTR2).
*--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_CDISTRCONTR INDEX 1 INTO DATA(WA_CDISTRCONTR2).


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

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

ENDLOOP.

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

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


*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_CDISTRCONTR-EXTCONTRACTFORPURG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDISTRCONTR-EXTCONTRACTFORPURG.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field LOGICALSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CDISTRCONTR-LOGICALSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDISTRCONTR-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_CDISTRCONTR_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,
CNTRLPURCONTRDISTRTRGGRDTETIME 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_CDISTRCONTR_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_CDISTRCONTR_STR-MANDT sy-vline 
WA_CDISTRCONTR_STR-COMPANYCODE sy-vline 
WA_CDISTRCONTR_STR-EXTCONTRACTFORPURG sy-vline 
WA_CDISTRCONTR_STR-PROCUREMENTHUBSOURCESYSTEM sy-vline 
WA_CDISTRCONTR_STR-PURCHASINGORGANIZATION sy-vline 
WA_CDISTRCONTR_STR-PURCHASINGGROUP sy-vline 
WA_CDISTRCONTR_STR-DISTRRESPONSEMESSAGEUUID sy-vline 
WA_CDISTRCONTR_STR-CENTRALPURCHASECONTRACT sy-vline 
WA_CDISTRCONTR_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_CDISTRCONTR_STR-DISTRIBUTIONKEY sy-vline 
WA_CDISTRCONTR_STR-CENTRALPURCHASECONTRACTITEM sy-vline 
WA_CDISTRCONTR_STR-CNTRLPURCONTRDISTRTRGGRDTETIME sy-vline 
WA_CDISTRCONTR_STR-PURCHASINGDOCUMENTCATEGORYNAME sy-vline 
WA_CDISTRCONTR_STR-ITEMDISTRIBUTIONSTATUS sy-vline 
WA_CDISTRCONTR_STR-SOURCELISTISUPDATED sy-vline 
WA_CDISTRCONTR_STR-SRCELISTRESPONSEMSGUUID sy-vline 
WA_CDISTRCONTR_STR-ITEMDISTRIBUTIONSTATUSNAME sy-vline 
WA_CDISTRCONTR_STR-SOURCELISTCHANGECONFSTATUS sy-vline 
WA_CDISTRCONTR_STR-SOURCELISTCHGCONFSTSDESC sy-vline 
WA_CDISTRCONTR_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.