ABAP Select data from SAP table MMPUR_CCM_S_CONF_SERVICE_HDR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPUR_CCM_S_CONF_SERVICE_HDR 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_CCM_S_CONF_SERVICE_HDR. 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_CCM_S_CONF_SERVICE_HDR 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_CCM_S_CONF_SERVICE_HDR TYPE STANDARD TABLE OF MMPUR_CCM_S_CONF_SERVICE_HDR,
      WA_MMPUR_CCM_S_CONF_SERVICE_HDR TYPE MMPUR_CCM_S_CONF_SERVICE_HDR,
      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_CCM_S_CONF_SERVICE_HDR> TYPE MMPUR_CCM_S_CONF_SERVICE_HDR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_CCM_S_CONF_SERVICE_HDR
*  INTO TABLE @DATA(IT_MMPUR_CCM_S_CONF_SERVICE_HDR2).
*--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_CCM_S_CONF_SERVICE_HDR INDEX 1 INTO DATA(WA_MMPUR_CCM_S_CONF_SERVICE_HDR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_CCM_S_CONF_SERVICE_HDR>-PURCHASINGDOCUMENT = 1.
<MMPUR_CCM_S_CONF_SERVICE_HDR>-PURCHASINGDOCUMENTCATEGORY = 1.
<MMPUR_CCM_S_CONF_SERVICE_HDR>-PURCHASINGORGANIZATION = 1.
<MMPUR_CCM_S_CONF_SERVICE_HDR>-RESPONSEMESSAGEGUID = 1.
<MMPUR_CCM_S_CONF_SERVICE_HDR>-COMPANYCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_CCM_S_CONF_SERVICE_HDR-PLANT, sy-vline,
  WA_MMPUR_CCM_S_CONF_SERVICE_HDR-LOGICALSYSTEM, sy-vline,
  WA_MMPUR_CCM_S_CONF_SERVICE_HDR-DOCUMENTCURRENCY, sy-vline,
  WA_MMPUR_CCM_S_CONF_SERVICE_HDR-PURCHASINGGROUP, sy-vline,
  WA_MMPUR_CCM_S_CONF_SERVICE_HDR-PAYMENTTERMS, sy-vline,
  WA_MMPUR_CCM_S_CONF_SERVICE_HDR-EXTCONTRACTFORPURG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_CCM_S_CONF_SERVICE_HDR 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_CCM_S_CONF_SERVICE_HDR 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_CCM_S_CONF_SERVICE_HDR INTO WA_MMPUR_CCM_S_CONF_SERVICE_HDR.


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

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

*Conversion exit ALPHA, internal->external for field EXTCONTRACTFORPURG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_CCM_S_CONF_SERVICE_HDR-EXTCONTRACTFORPURG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_CCM_S_CONF_SERVICE_HDR-EXTCONTRACTFORPURG.
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_CCM_S_CONF_SERVICE_HDR_STR, 
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
RESPONSEMESSAGEGUID TYPE STRING,
COMPANYCODE TYPE STRING,
PLANT TYPE STRING,
LOGICALSYSTEM TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PAYMENTTERMS TYPE STRING,
EXTCONTRACTFORPURG TYPE STRING,
BE_CONTRACT_ITEM TYPE STRING,
LOGITEMS TYPE STRING,
ITEMS TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
PROCUREMENTHUBSOURCESYSTEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_CCM_S_CONF_SERVICE_HDR_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_CCM_S_CONF_SERVICE_HDR_STR-PURCHASINGDOCUMENT sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-PURCHASINGORGANIZATION sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-RESPONSEMESSAGEGUID sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-COMPANYCODE sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-PLANT sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-LOGICALSYSTEM sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-DOCUMENTCURRENCY sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-PURCHASINGGROUP sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-PAYMENTTERMS sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-EXTCONTRACTFORPURG sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-BE_CONTRACT_ITEM sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-LOGITEMS sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-ITEMS sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_MMPUR_CCM_S_CONF_SERVICE_HDR_STR-PROCUREMENTHUBSOURCESYSTEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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