ABAP Select data from SAP table CACTPRJCTBYMNTH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CACTPRJCTBYMNTH
*  INTO TABLE @DATA(IT_CACTPRJCTBYMNTH2).
*--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_CACTPRJCTBYMNTH INDEX 1 INTO DATA(WA_CACTPRJCTBYMNTH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CACTPRJCTBYMNTH>-MANDT = 1.
<CACTPRJCTBYMNTH>-YEARMONTH = 1.
<CACTPRJCTBYMNTH>-PROJECT = 1.
<CACTPRJCTBYMNTH>-PROFITCENTER = 1.
<CACTPRJCTBYMNTH>-COMPANYCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CACTPRJCTBYMNTH-PLANNINGCATEGORY, sy-vline,
  WA_CACTPRJCTBYMNTH-MONTHINFIRSTINTERVAL, sy-vline,
  WA_CACTPRJCTBYMNTH-MONTHINSECONDINTERVAL, sy-vline,
  WA_CACTPRJCTBYMNTH-MONTHINTHIRDINTERVAL, sy-vline,
  WA_CACTPRJCTBYMNTH-PROJECTUUID, sy-vline,
  WA_CACTPRJCTBYMNTH-PROJECTINTERNALID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CACTPRJCTBYMNTH 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_CACTPRJCTBYMNTH 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_CACTPRJCTBYMNTH INTO WA_CACTPRJCTBYMNTH.


*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_CACTPRJCTBYMNTH-PROFITCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACTPRJCTBYMNTH-PROFITCENTER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CACTPRJCTBYMNTH-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CACTPRJCTBYMNTH-BUSINESSPARTNER.
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_CACTPRJCTBYMNTH_STR, 
MANDT TYPE STRING,
YEARMONTH TYPE STRING,
PROJECT TYPE STRING,
PROFITCENTER TYPE STRING,
COMPANYCODE TYPE STRING,
PLANNINGCATEGORY TYPE STRING,
MONTHINFIRSTINTERVAL TYPE STRING,
MONTHINSECONDINTERVAL TYPE STRING,
MONTHINTHIRDINTERVAL TYPE STRING,
PROJECTUUID TYPE STRING,
PROJECTINTERNALID TYPE STRING,
GLOBALCURRENCY TYPE STRING,
CALENDARMONTHNAME TYPE STRING,
BUSINESSPARTNERFULLNAME TYPE STRING,
BUSINESSPARTNERUUID TYPE STRING,
BUSINESSPARTNER TYPE STRING,
ACTLCMTMTCUMLTVAMTINGLOBCRCY TYPE STRING,
PLANAMOUNTINGLOBALCURRENCY TYPE STRING,
CONTROLLINGAREA TYPE STRING,
PROJECTTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CACTPRJCTBYMNTH_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_CACTPRJCTBYMNTH_STR-MANDT sy-vline 
WA_CACTPRJCTBYMNTH_STR-YEARMONTH sy-vline 
WA_CACTPRJCTBYMNTH_STR-PROJECT sy-vline 
WA_CACTPRJCTBYMNTH_STR-PROFITCENTER sy-vline 
WA_CACTPRJCTBYMNTH_STR-COMPANYCODE sy-vline 
WA_CACTPRJCTBYMNTH_STR-PLANNINGCATEGORY sy-vline 
WA_CACTPRJCTBYMNTH_STR-MONTHINFIRSTINTERVAL sy-vline 
WA_CACTPRJCTBYMNTH_STR-MONTHINSECONDINTERVAL sy-vline 
WA_CACTPRJCTBYMNTH_STR-MONTHINTHIRDINTERVAL sy-vline 
WA_CACTPRJCTBYMNTH_STR-PROJECTUUID sy-vline 
WA_CACTPRJCTBYMNTH_STR-PROJECTINTERNALID sy-vline 
WA_CACTPRJCTBYMNTH_STR-GLOBALCURRENCY sy-vline 
WA_CACTPRJCTBYMNTH_STR-CALENDARMONTHNAME sy-vline 
WA_CACTPRJCTBYMNTH_STR-BUSINESSPARTNERFULLNAME sy-vline 
WA_CACTPRJCTBYMNTH_STR-BUSINESSPARTNERUUID sy-vline 
WA_CACTPRJCTBYMNTH_STR-BUSINESSPARTNER sy-vline 
WA_CACTPRJCTBYMNTH_STR-ACTLCMTMTCUMLTVAMTINGLOBCRCY sy-vline 
WA_CACTPRJCTBYMNTH_STR-PLANAMOUNTINGLOBALCURRENCY sy-vline 
WA_CACTPRJCTBYMNTH_STR-CONTROLLINGAREA sy-vline 
WA_CACTPRJCTBYMNTH_STR-PROJECTTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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