ABAP Select data from SAP table P06_DSN_CONT_P21V01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P06_DSN_CONT_P21V01 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 P06_DSN_CONT_P21V01. 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 P06_DSN_CONT_P21V01 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_P06_DSN_CONT_P21V01 TYPE STANDARD TABLE OF P06_DSN_CONT_P21V01,
      WA_P06_DSN_CONT_P21V01 TYPE P06_DSN_CONT_P21V01,
      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: <P06_DSN_CONT_P21V01> TYPE P06_DSN_CONT_P21V01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P06_DSN_CONT_P21V01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P06_DSN_CONT_P21V01
  INTO TABLE IT_P06_DSN_CONT_P21V01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P06_DSN_CONT_P21V01
*  INTO TABLE @DATA(IT_P06_DSN_CONT_P21V012).
*--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_P06_DSN_CONT_P21V01 INDEX 1 INTO DATA(WA_P06_DSN_CONT_P21V012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P06_DSN_CONT_P21V01 ASSIGNING <P06_DSN_CONT_P21V01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P06_DSN_CONT_P21V01>-SEKEY = 1.
<P06_DSN_CONT_P21V01>-ADKEY = 1.
<P06_DSN_CONT_P21V01>-CODEB = 1.
<P06_DSN_CONT_P21V01>-COSTA = 1.
<P06_DSN_CONT_P21V01>-COAGI = 1.

ENDLOOP.

LOOP AT IT_P06_DSN_CONT_P21V01 INTO WA_P06_DSN_CONT_P21V01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P06_DSN_CONT_P21V01-COCSP, sy-vline,
  WA_P06_DSN_CONT_P21V01-COPCS, sy-vline,
  WA_P06_DSN_CONT_P21V01-COLIB, sy-vline,
  WA_P06_DSN_CONT_P21V01-CONAT, sy-vline,
  WA_P06_DSN_CONT_P21V01-COINT, sy-vline,
  WA_P06_DSN_CONT_P21V01-CONUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P06_DSN_CONT_P21V01 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_P06_DSN_CONT_P21V01 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_P06_DSN_CONT_P21V01 INTO WA_P06_DSN_CONT_P21V01.


*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_P06_DSN_CONT_P21V01_STR, 
SEKEY TYPE STRING,
ADKEY TYPE STRING,
CODEB TYPE STRING,
COSTA TYPE STRING,
COAGI TYPE STRING,
COCSP TYPE STRING,
COPCS TYPE STRING,
COLIB TYPE STRING,
CONAT TYPE STRING,
COINT TYPE STRING,
CONUM TYPE STRING,
COFIN TYPE STRING,
COUMQ TYPE STRING,
COQTR TYPE STRING,
COQTC TYPE STRING,
COMEX TYPE STRING,
COALS TYPE STRING,
COCOL TYPE STRING,
COROB TYPE STRING,
COSIR TYPE STRING,
CORIS TYPE STRING,
COMRE TYPE STRING,
COCCL TYPE STRING,
COTDF TYPE STRING,
COSTE TYPE STRING,
COEXC TYPE STRING,
COEST TYPE STRING,
COASC TYPE STRING,
CONEP TYPE STRING,
COGAC TYPE STRING,
CODAD TYPE STRING,
CODDE TYPE STRING,
CODEC TYPE STRING,
CONCG TYPE STRING,
CODRM TYPE STRING,
COEMM TYPE STRING,
COERM TYPE STRING,
CORAT TYPE STRING,
CORSA TYPE STRING,
COPCC TYPE STRING,
COSCA TYPE STRING,
COTAT TYPE STRING,
COSTP TYPE STRING,
CORPB TYPE STRING,
COSUT TYPE STRING,
CONLP TYPE STRING,
CONLE TYPE STRING,
CONOS TYPE STRING,
COSOS TYPE STRING,
COFPP TYPE STRING,
CONPO TYPE STRING,
COQTT TYPE STRING,
COTTP TYPE STRING,
COCCS TYPE STRING,
COCIB TYPE STRING,
COCIM TYPE STRING,
CONBI TYPE STRING,
COIBO TYPE STRING,
COIES TYPE STRING,
COIBG TYPE STRING,
COIBP TYPE STRING,
COIBS TYPE STRING,
COMTC TYPE STRING,
COTPD TYPE STRING,
COGEN TYPE STRING,
COTSA TYPE STRING,
CONRX TYPE STRING,
COECH TYPE STRING,
COCOH TYPE STRING,
COSBO TYPE STRING,
COCDP TYPE STRING,
CODEI TYPE STRING,
COCCF TYPE STRING,
COIEM TYPE STRING,
COIEG TYPE STRING,
COTAP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P06_DSN_CONT_P21V01_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_P06_DSN_CONT_P21V01_STR-SEKEY sy-vline 
WA_P06_DSN_CONT_P21V01_STR-ADKEY sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CODEB sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COSTA sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COAGI sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COCSP sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COPCS sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COLIB sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CONAT sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COINT sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CONUM sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COFIN sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COUMQ sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COQTR sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COQTC sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COMEX sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COALS sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COCOL sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COROB sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COSIR sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CORIS sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COMRE sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COCCL sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COTDF sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COSTE sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COEXC sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COEST sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COASC sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CONEP sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COGAC sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CODAD sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CODDE sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CODEC sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CONCG sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CODRM sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COEMM sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COERM sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CORAT sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CORSA sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COPCC sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COSCA sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COTAT sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COSTP sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CORPB sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COSUT sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CONLP sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CONLE sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CONOS sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COSOS sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COFPP sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CONPO sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COQTT sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COTTP sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COCCS sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COCIB sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COCIM sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CONBI sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COIBO sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COIES sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COIBG sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COIBP sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COIBS sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COMTC sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COTPD sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COGEN sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COTSA sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CONRX sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COECH sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COCOH sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COSBO sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COCDP sy-vline 
WA_P06_DSN_CONT_P21V01_STR-CODEI sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COCCF sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COIEM sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COIEG sy-vline 
WA_P06_DSN_CONT_P21V01_STR-COTAP sy-vline      INTO ld_text SEPARATED BY SPACE.

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