ABAP Select data from SAP table P06_DSN_EMPL_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_EMPL_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_EMPL_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_EMPL_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_EMPL_P21V01 TYPE STANDARD TABLE OF P06_DSN_EMPL_P21V01,
      WA_P06_DSN_EMPL_P21V01 TYPE P06_DSN_EMPL_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_EMPL_P21V01> TYPE P06_DSN_EMPL_P21V01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P06_DSN_EMPL_P21V01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P06_DSN_EMPL_P21V01
  INTO TABLE IT_P06_DSN_EMPL_P21V01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P06_DSN_EMPL_P21V01
*  INTO TABLE @DATA(IT_P06_DSN_EMPL_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_EMPL_P21V01 INDEX 1 INTO DATA(WA_P06_DSN_EMPL_P21V012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P06_DSN_EMPL_P21V01 ASSIGNING <P06_DSN_EMPL_P21V01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P06_DSN_EMPL_P21V01>-SEKEY = 1.
<P06_DSN_EMPL_P21V01>-ADKEY = 1.
<P06_DSN_EMPL_P21V01>-EMNIR = 1.
<P06_DSN_EMPL_P21V01>-EMNAP = 1.
<P06_DSN_EMPL_P21V01>-EMNAM = 1.

ENDLOOP.

LOOP AT IT_P06_DSN_EMPL_P21V01 INTO WA_P06_DSN_EMPL_P21V01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P06_DSN_EMPL_P21V01-EMVOR, sy-vline,
  WA_P06_DSN_EMPL_P21V01-EMGES, sy-vline,
  WA_P06_DSN_EMPL_P21V01-EMGBD, sy-vline,
  WA_P06_DSN_EMPL_P21V01-EMGBO, sy-vline,
  WA_P06_DSN_EMPL_P21V01-EMNEN, sy-vline,
  WA_P06_DSN_EMPL_P21V01-EMPST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P06_DSN_EMPL_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_EMPL_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_EMPL_P21V01 INTO WA_P06_DSN_EMPL_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_EMPL_P21V01_STR, 
SEKEY TYPE STRING,
ADKEY TYPE STRING,
EMNIR TYPE STRING,
EMNAP TYPE STRING,
EMNAM TYPE STRING,
EMVOR TYPE STRING,
EMGES TYPE STRING,
EMGBD TYPE STRING,
EMGBO TYPE STRING,
EMNEN TYPE STRING,
EMPST TYPE STRING,
EMLOC TYPE STRING,
EMPCO TYPE STRING,
EMADD TYPE STRING,
EMCUE TYPE STRING,
EMCDN TYPE STRING,
EMCOP TYPE STRING,
EMCPL TYPE STRING,
EMSRV TYPE STRING,
EMMEL TYPE STRING,
EMMAT TYPE STRING,
EMNTT TYPE STRING,
EMSTE TYPE STRING,
EMHIR TYPE STRING,
EMNFI TYPE STRING,
EMNDP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P06_DSN_EMPL_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_EMPL_P21V01_STR-SEKEY sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-ADKEY sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMNIR sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMNAP sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMNAM sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMVOR sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMGES sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMGBD sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMGBO sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMNEN sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMPST sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMLOC sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMPCO sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMADD sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMCUE sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMCDN sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMCOP sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMCPL sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMSRV sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMMEL sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMMAT sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMNTT sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMSTE sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMHIR sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMNFI sy-vline 
WA_P06_DSN_EMPL_P21V01_STR-EMNDP sy-vline      INTO ld_text SEPARATED BY SPACE.

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