ABAP Select data from SAP table CNSE_PROJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNSE_PROJ
*  INTO TABLE @DATA(IT_CNSE_PROJ2).
*--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_CNSE_PROJ INDEX 1 INTO DATA(WA_CNSE_PROJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNSE_PROJ>-PSPID = 1.
<CNSE_PROJ>-POST1 = 1.
<CNSE_PROJ>-AEDAT = 1.
<CNSE_PROJ>-VERNR = 1.
<CNSE_PROJ>-ASTNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNSE_PROJ-VBUKR, sy-vline,
  WA_CNSE_PROJ-VGSBR, sy-vline,
  WA_CNSE_PROJ-VKOKR, sy-vline,
  WA_CNSE_PROJ-PRCTR, sy-vline,
  WA_CNSE_PROJ-PWHIE, sy-vline,
  WA_CNSE_PROJ-WERKS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNSE_PROJ 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_CNSE_PROJ 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_CNSE_PROJ INTO WA_CNSE_PROJ.


*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 ABPSN, internal->external for field PSPID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_CNSE_PROJ-PSPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNSE_PROJ-PSPID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNSE_PROJ-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNSE_PROJ-KOSTL.
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_CNSE_PROJ_STR, 
PSPID TYPE STRING,
POST1 TYPE STRING,
AEDAT TYPE STRING,
VERNR TYPE STRING,
ASTNR TYPE STRING,
VBUKR TYPE STRING,
VGSBR TYPE STRING,
VKOKR TYPE STRING,
PRCTR TYPE STRING,
PWHIE TYPE STRING,
WERKS TYPE STRING,
KOSTL TYPE STRING,
ERDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNSE_PROJ_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_CNSE_PROJ_STR-PSPID sy-vline 
WA_CNSE_PROJ_STR-POST1 sy-vline 
WA_CNSE_PROJ_STR-AEDAT sy-vline 
WA_CNSE_PROJ_STR-VERNR sy-vline 
WA_CNSE_PROJ_STR-ASTNR sy-vline 
WA_CNSE_PROJ_STR-VBUKR sy-vline 
WA_CNSE_PROJ_STR-VGSBR sy-vline 
WA_CNSE_PROJ_STR-VKOKR sy-vline 
WA_CNSE_PROJ_STR-PRCTR sy-vline 
WA_CNSE_PROJ_STR-PWHIE sy-vline 
WA_CNSE_PROJ_STR-WERKS sy-vline 
WA_CNSE_PROJ_STR-KOSTL sy-vline 
WA_CNSE_PROJ_STR-ERDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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