ABAP Select data from SAP table CENTPREPRJWPRT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CENTPREPRJWPRT
*  INTO TABLE @DATA(IT_CENTPREPRJWPRT2).
*--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_CENTPREPRJWPRT INDEX 1 INTO DATA(WA_CENTPREPRJWPRT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CENTPREPRJWPRT>-MANDT = 1.
<CENTPREPRJWPRT>-PROJECTUUID = 1.
<CENTPREPRJWPRT>-PROJECTSUMMARYTASKUUID = 1.
<CENTPREPRJWPRT>-PROJECTINTERNALID = 1.
<CENTPREPRJWPRT>-PROJECT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CENTPREPRJWPRT-PROJECTNAME, sy-vline,
  WA_CENTPREPRJWPRT-WBSELEMENTINTERNALID, sy-vline,
  WA_CENTPREPRJWPRT-PROJECTSTARTDATE, sy-vline,
  WA_CENTPREPRJWPRT-PROJECTENDDATE, sy-vline,
  WA_CENTPREPRJWPRT-PROJECTPROFILECODE, sy-vline,
  WA_CENTPREPRJWPRT-PROCESSINGSTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CENTPREPRJWPRT 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_CENTPREPRJWPRT 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_CENTPREPRJWPRT INTO WA_CENTPREPRJWPRT.


*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 PROFITCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CENTPREPRJWPRT-PROFITCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CENTPREPRJWPRT-PROFITCENTER.
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_CENTPREPRJWPRT_STR, 
MANDT TYPE STRING,
PROJECTUUID TYPE STRING,
PROJECTSUMMARYTASKUUID TYPE STRING,
PROJECTINTERNALID TYPE STRING,
PROJECT TYPE STRING,
PROJECTNAME TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
PROJECTSTARTDATE TYPE STRING,
PROJECTENDDATE TYPE STRING,
PROJECTPROFILECODE TYPE STRING,
PROCESSINGSTATUS TYPE STRING,
PROFITCENTER TYPE STRING,
CONTROLLINGAREA TYPE STRING,
PROJECTMANAGERUUID TYPE STRING,
PROJECTPROFILECODETEXT TYPE STRING,
PERSONFULLNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CENTPREPRJWPRT_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_CENTPREPRJWPRT_STR-MANDT sy-vline 
WA_CENTPREPRJWPRT_STR-PROJECTUUID sy-vline 
WA_CENTPREPRJWPRT_STR-PROJECTSUMMARYTASKUUID sy-vline 
WA_CENTPREPRJWPRT_STR-PROJECTINTERNALID sy-vline 
WA_CENTPREPRJWPRT_STR-PROJECT sy-vline 
WA_CENTPREPRJWPRT_STR-PROJECTNAME sy-vline 
WA_CENTPREPRJWPRT_STR-WBSELEMENTINTERNALID sy-vline 
WA_CENTPREPRJWPRT_STR-PROJECTSTARTDATE sy-vline 
WA_CENTPREPRJWPRT_STR-PROJECTENDDATE sy-vline 
WA_CENTPREPRJWPRT_STR-PROJECTPROFILECODE sy-vline 
WA_CENTPREPRJWPRT_STR-PROCESSINGSTATUS sy-vline 
WA_CENTPREPRJWPRT_STR-PROFITCENTER sy-vline 
WA_CENTPREPRJWPRT_STR-CONTROLLINGAREA sy-vline 
WA_CENTPREPRJWPRT_STR-PROJECTMANAGERUUID sy-vline 
WA_CENTPREPRJWPRT_STR-PROJECTPROFILECODETEXT sy-vline 
WA_CENTPREPRJWPRT_STR-PERSONFULLNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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