ABAP Select data from SAP table CENTPROJMCHG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CENTPROJMCHG
*  INTO TABLE @DATA(IT_CENTPROJMCHG2).
*--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_CENTPROJMCHG INDEX 1 INTO DATA(WA_CENTPROJMCHG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CENTPROJMCHG>-MANDT = 1.
<CENTPROJMCHG>-PROJECTUUID = 1.
<CENTPROJMCHG>-ENTPROJMASSCHANGEREQUESTUUID = 1.
<CENTPROJMCHG>-WBSELEMENTINTERNALID = 1.
<CENTPROJMCHG>-PROJECTSUMMARYTASKUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CENTPROJMCHG-PROJECT, sy-vline,
  WA_CENTPROJMCHG-PROJECTNAME, sy-vline,
  WA_CENTPROJMCHG-PROJECTPROFILECODE, sy-vline,
  WA_CENTPROJMCHG-PROJECTPROFILECODETEXT, sy-vline,
  WA_CENTPROJMCHG-PROJECTMANAGERUUID, sy-vline,
  WA_CENTPROJMCHG-PROCESSINGSTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CENTPROJMCHG 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_CENTPROJMCHG 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_CENTPROJMCHG INTO WA_CENTPROJMCHG.


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

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

*Conversion exit ALPHA, internal->external for field COSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CENTPROJMCHG-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CENTPROJMCHG-COSTCENTER.
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_CENTPROJMCHG_STR, 
MANDT TYPE STRING,
PROJECTUUID TYPE STRING,
ENTPROJMASSCHANGEREQUESTUUID TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
PROJECTSUMMARYTASKUUID TYPE STRING,
PROJECT TYPE STRING,
PROJECTNAME TYPE STRING,
PROJECTPROFILECODE TYPE STRING,
PROJECTPROFILECODETEXT TYPE STRING,
PROJECTMANAGERUUID TYPE STRING,
PROCESSINGSTATUS TYPE STRING,
RESPONSIBLECOSTCENTER TYPE STRING,
RESPONSIBLECOSTCENTERNAME TYPE STRING,
PROFITCENTER TYPE STRING,
PROFITCENTERNAME TYPE STRING,
CONTROLLINGAREA TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATEDBYUSERNAME TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
PLANT TYPE STRING,
PLANNEDSTARTDATE TYPE STRING,
PLANNEDENDDATE TYPE STRING,
ACTUALSTARTDATE TYPE STRING,
ACTUALENDDATE TYPE STRING,
INVESTMENTPROFILENAME TYPE STRING,
INVESTMENTPROFILE TYPE STRING,
COMPANYCODE TYPE STRING,
COMPANYCODENAME TYPE STRING,
COSTCENTER TYPE STRING,
COSTINGSHEET TYPE STRING,
FACTORYCALENDAR TYPE STRING,
FUNCTIONALAREA TYPE STRING,
PRIORITYCODE TYPE STRING,
ISBILLINGRELEVANT TYPE STRING,
ENTERPRISEPROJECTTYPE TYPE STRING,
PROJECTTYPENAME TYPE STRING,
FIXEDASSETEXTERNALID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CENTPROJMCHG_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_CENTPROJMCHG_STR-MANDT sy-vline 
WA_CENTPROJMCHG_STR-PROJECTUUID sy-vline 
WA_CENTPROJMCHG_STR-ENTPROJMASSCHANGEREQUESTUUID sy-vline 
WA_CENTPROJMCHG_STR-WBSELEMENTINTERNALID sy-vline 
WA_CENTPROJMCHG_STR-PROJECTSUMMARYTASKUUID sy-vline 
WA_CENTPROJMCHG_STR-PROJECT sy-vline 
WA_CENTPROJMCHG_STR-PROJECTNAME sy-vline 
WA_CENTPROJMCHG_STR-PROJECTPROFILECODE sy-vline 
WA_CENTPROJMCHG_STR-PROJECTPROFILECODETEXT sy-vline 
WA_CENTPROJMCHG_STR-PROJECTMANAGERUUID sy-vline 
WA_CENTPROJMCHG_STR-PROCESSINGSTATUS sy-vline 
WA_CENTPROJMCHG_STR-RESPONSIBLECOSTCENTER sy-vline 
WA_CENTPROJMCHG_STR-RESPONSIBLECOSTCENTERNAME sy-vline 
WA_CENTPROJMCHG_STR-PROFITCENTER sy-vline 
WA_CENTPROJMCHG_STR-PROFITCENTERNAME sy-vline 
WA_CENTPROJMCHG_STR-CONTROLLINGAREA sy-vline 
WA_CENTPROJMCHG_STR-CREATEDBYUSER sy-vline 
WA_CENTPROJMCHG_STR-CREATEDBYUSERNAME sy-vline 
WA_CENTPROJMCHG_STR-CREATIONDATETIME sy-vline 
WA_CENTPROJMCHG_STR-LASTCHANGEDBYUSER sy-vline 
WA_CENTPROJMCHG_STR-LASTCHANGEDATETIME sy-vline 
WA_CENTPROJMCHG_STR-PLANT sy-vline 
WA_CENTPROJMCHG_STR-PLANNEDSTARTDATE sy-vline 
WA_CENTPROJMCHG_STR-PLANNEDENDDATE sy-vline 
WA_CENTPROJMCHG_STR-ACTUALSTARTDATE sy-vline 
WA_CENTPROJMCHG_STR-ACTUALENDDATE sy-vline 
WA_CENTPROJMCHG_STR-INVESTMENTPROFILENAME sy-vline 
WA_CENTPROJMCHG_STR-INVESTMENTPROFILE sy-vline 
WA_CENTPROJMCHG_STR-COMPANYCODE sy-vline 
WA_CENTPROJMCHG_STR-COMPANYCODENAME sy-vline 
WA_CENTPROJMCHG_STR-COSTCENTER sy-vline 
WA_CENTPROJMCHG_STR-COSTINGSHEET sy-vline 
WA_CENTPROJMCHG_STR-FACTORYCALENDAR sy-vline 
WA_CENTPROJMCHG_STR-FUNCTIONALAREA sy-vline 
WA_CENTPROJMCHG_STR-PRIORITYCODE sy-vline 
WA_CENTPROJMCHG_STR-ISBILLINGRELEVANT sy-vline 
WA_CENTPROJMCHG_STR-ENTERPRISEPROJECTTYPE sy-vline 
WA_CENTPROJMCHG_STR-PROJECTTYPENAME sy-vline 
WA_CENTPROJMCHG_STR-FIXEDASSETEXTERNALID sy-vline      INTO ld_text SEPARATED BY SPACE.

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