ABAP Select data from SAP table TCNDB_PSJT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TCNDB_PSJT
*  INTO TABLE @DATA(IT_TCNDB_PSJT2).
*--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_TCNDB_PSJT INDEX 1 INTO DATA(WA_TCNDB_PSJT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TCNDB_PSJT>-PROFID = 1.
<TCNDB_PSJT>-AENAM = 1.
<TCNDB_PSJT>-PROTECT = 1.
<TCNDB_PSJT>-CUSTOM = 1.
<TCNDB_PSJT>-SDOR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TCNDB_PSJT-PROJ, sy-vline,
  WA_TCNDB_PSJT-PRPS, sy-vline,
  WA_TCNDB_PSJT-HIEKZ, sy-vline,
  WA_TCNDB_PSJT-SUBPRKZ, sy-vline,
  WA_TCNDB_PSJT-SUBPR, sy-vline,
  WA_TCNDB_PSJT-INCOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TCNDB_PSJT 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_TCNDB_PSJT 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_TCNDB_PSJT INTO WA_TCNDB_PSJT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TCNDB_PSJT_STR, 
PROFID TYPE STRING,
AENAM TYPE STRING,
PROTECT TYPE STRING,
CUSTOM TYPE STRING,
SDOR TYPE STRING,
PROJ TYPE STRING,
PRPS TYPE STRING,
HIEKZ TYPE STRING,
SUBPRKZ TYPE STRING,
SUBPR TYPE STRING,
INCOR TYPE STRING,
INCNT TYPE STRING,
INCVG TYPE STRING,
PLAF TYPE STRING,
NETZ TYPE STRING,
ACT TYPE STRING,
AOB TYPE STRING,
AOBKZ TYPE STRING,
MLST TYPE STRING,
PSTX TYPE STRING,
FHM TYPE STRING,
KAPA TYPE STRING,
KOMP TYPE STRING,
CONF TYPE STRING,
EVA TYPE STRING,
COST TYPE STRING,
EBL TYPE STRING,
MAXLEVEL TYPE STRING,
VARIANTE TYPE STRING,
DB_VIEW TYPE STRING,
VSNUMMER TYPE STRING,
VSGRUPPE TYPE STRING,
MODIF TYPE STRING,
PFAD_OBEN TYPE STRING,
COREP TYPE STRING,
SHOW_VERS TYPE STRING,
SHOW_ARCH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TCNDB_PSJT_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_TCNDB_PSJT_STR-PROFID sy-vline 
WA_TCNDB_PSJT_STR-AENAM sy-vline 
WA_TCNDB_PSJT_STR-PROTECT sy-vline 
WA_TCNDB_PSJT_STR-CUSTOM sy-vline 
WA_TCNDB_PSJT_STR-SDOR sy-vline 
WA_TCNDB_PSJT_STR-PROJ sy-vline 
WA_TCNDB_PSJT_STR-PRPS sy-vline 
WA_TCNDB_PSJT_STR-HIEKZ sy-vline 
WA_TCNDB_PSJT_STR-SUBPRKZ sy-vline 
WA_TCNDB_PSJT_STR-SUBPR sy-vline 
WA_TCNDB_PSJT_STR-INCOR sy-vline 
WA_TCNDB_PSJT_STR-INCNT sy-vline 
WA_TCNDB_PSJT_STR-INCVG sy-vline 
WA_TCNDB_PSJT_STR-PLAF sy-vline 
WA_TCNDB_PSJT_STR-NETZ sy-vline 
WA_TCNDB_PSJT_STR-ACT sy-vline 
WA_TCNDB_PSJT_STR-AOB sy-vline 
WA_TCNDB_PSJT_STR-AOBKZ sy-vline 
WA_TCNDB_PSJT_STR-MLST sy-vline 
WA_TCNDB_PSJT_STR-PSTX sy-vline 
WA_TCNDB_PSJT_STR-FHM sy-vline 
WA_TCNDB_PSJT_STR-KAPA sy-vline 
WA_TCNDB_PSJT_STR-KOMP sy-vline 
WA_TCNDB_PSJT_STR-CONF sy-vline 
WA_TCNDB_PSJT_STR-EVA sy-vline 
WA_TCNDB_PSJT_STR-COST sy-vline 
WA_TCNDB_PSJT_STR-EBL sy-vline 
WA_TCNDB_PSJT_STR-MAXLEVEL sy-vline 
WA_TCNDB_PSJT_STR-VARIANTE sy-vline 
WA_TCNDB_PSJT_STR-DB_VIEW sy-vline 
WA_TCNDB_PSJT_STR-VSNUMMER sy-vline 
WA_TCNDB_PSJT_STR-VSGRUPPE sy-vline 
WA_TCNDB_PSJT_STR-MODIF sy-vline 
WA_TCNDB_PSJT_STR-PFAD_OBEN sy-vline 
WA_TCNDB_PSJT_STR-COREP sy-vline 
WA_TCNDB_PSJT_STR-SHOW_VERS sy-vline 
WA_TCNDB_PSJT_STR-SHOW_ARCH sy-vline      INTO ld_text SEPARATED BY SPACE.

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