ABAP Select data from SAP table CMASSRUNHDRCHG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMASSRUNHDRCHG
*  INTO TABLE @DATA(IT_CMASSRUNHDRCHG2).
*--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_CMASSRUNHDRCHG INDEX 1 INTO DATA(WA_CMASSRUNHDRCHG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMASSRUNHDRCHG>-MANDT = 1.
<CMASSRUNHDRCHG>-SERVICEMASSRUNUUID = 1.
<CMASSRUNHDRCHG>-SERVICEMASSRUNID = 1.
<CMASSRUNHDRCHG>-SERVICEMASSRUNDESCRIPTION = 1.
<CMASSRUNHDRCHG>-SERVICEMASSRUNUPPERCASEDESC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMASSRUNHDRCHG-SERVICEMASSRUNTYPE, sy-vline,
  WA_CMASSRUNHDRCHG-SERVICEMASSRUNSTATUS, sy-vline,
  WA_CMASSRUNHDRCHG-SERVICEMASSRUNPRIORITY, sy-vline,
  WA_CMASSRUNHDRCHG-SERVICEMASSRUNEXECFROMDATETIME, sy-vline,
  WA_CMASSRUNHDRCHG-SERVICEMASSRUNPREDECESSORUUID, sy-vline,
  WA_CMASSRUNHDRCHG-CREATEDBYUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMASSRUNHDRCHG 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_CMASSRUNHDRCHG 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_CMASSRUNHDRCHG INTO WA_CMASSRUNHDRCHG.


*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 SERVICEMASSRUNID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMASSRUNHDRCHG-SERVICEMASSRUNID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMASSRUNHDRCHG-SERVICEMASSRUNID.
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_CMASSRUNHDRCHG_STR, 
MANDT TYPE STRING,
SERVICEMASSRUNUUID TYPE STRING,
SERVICEMASSRUNID TYPE STRING,
SERVICEMASSRUNDESCRIPTION TYPE STRING,
SERVICEMASSRUNUPPERCASEDESC TYPE STRING,
SERVICEMASSRUNTYPE TYPE STRING,
SERVICEMASSRUNSTATUS TYPE STRING,
SERVICEMASSRUNPRIORITY TYPE STRING,
SERVICEMASSRUNEXECFROMDATETIME TYPE STRING,
SERVICEMASSRUNPREDECESSORUUID TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
SRVCCHGORDACTIVATEDATDATETIME TYPE STRING,
SERVICECONTRCANCELLATIONREASON TYPE STRING,
SRVCCONTRCANCELLATIONDATETIME TYPE STRING,
CRSCATALOGMAPPINGVERSIONNUMBER TYPE STRING,
SRVCCHGORDCRSCTLGMAPPGVERSID TYPE STRING,
SERVICECHANGEORDERPRODUCTID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMASSRUNHDRCHG_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_CMASSRUNHDRCHG_STR-MANDT sy-vline 
WA_CMASSRUNHDRCHG_STR-SERVICEMASSRUNUUID sy-vline 
WA_CMASSRUNHDRCHG_STR-SERVICEMASSRUNID sy-vline 
WA_CMASSRUNHDRCHG_STR-SERVICEMASSRUNDESCRIPTION sy-vline 
WA_CMASSRUNHDRCHG_STR-SERVICEMASSRUNUPPERCASEDESC sy-vline 
WA_CMASSRUNHDRCHG_STR-SERVICEMASSRUNTYPE sy-vline 
WA_CMASSRUNHDRCHG_STR-SERVICEMASSRUNSTATUS sy-vline 
WA_CMASSRUNHDRCHG_STR-SERVICEMASSRUNPRIORITY sy-vline 
WA_CMASSRUNHDRCHG_STR-SERVICEMASSRUNEXECFROMDATETIME sy-vline 
WA_CMASSRUNHDRCHG_STR-SERVICEMASSRUNPREDECESSORUUID sy-vline 
WA_CMASSRUNHDRCHG_STR-CREATEDBYUSER sy-vline 
WA_CMASSRUNHDRCHG_STR-CREATIONDATETIME sy-vline 
WA_CMASSRUNHDRCHG_STR-LASTCHANGEDBYUSER sy-vline 
WA_CMASSRUNHDRCHG_STR-LASTCHANGEDATETIME sy-vline 
WA_CMASSRUNHDRCHG_STR-SRVCCHGORDACTIVATEDATDATETIME sy-vline 
WA_CMASSRUNHDRCHG_STR-SERVICECONTRCANCELLATIONREASON sy-vline 
WA_CMASSRUNHDRCHG_STR-SRVCCONTRCANCELLATIONDATETIME sy-vline 
WA_CMASSRUNHDRCHG_STR-CRSCATALOGMAPPINGVERSIONNUMBER sy-vline 
WA_CMASSRUNHDRCHG_STR-SRVCCHGORDCRSCTLGMAPPGVERSID sy-vline 
WA_CMASSRUNHDRCHG_STR-SERVICECHANGEORDERPRODUCTID sy-vline      INTO ld_text SEPARATED BY SPACE.

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