ABAP Select data from SAP table /NAKISA/NAK_POS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /NAKISA/NAK_POS 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 /NAKISA/NAK_POS. 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 /NAKISA/NAK_POS 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_/NAKISA/NAK_POS TYPE STANDARD TABLE OF /NAKISA/NAK_POS,
      WA_/NAKISA/NAK_POS TYPE /NAKISA/NAK_POS,
      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: </NAKISA/NAK_POS> TYPE /NAKISA/NAK_POS.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /NAKISA/NAK_POS
  INTO TABLE IT_/NAKISA/NAK_POS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /NAKISA/NAK_POS
*  INTO TABLE @DATA(IT_/NAKISA/NAK_POS2).
*--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_/NAKISA/NAK_POS INDEX 1 INTO DATA(WA_/NAKISA/NAK_POS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/NAKISA/NAK_POS ASSIGNING </NAKISA/NAK_POS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</NAKISA/NAK_POS>-PERSONNEL_ID = 1.
</NAKISA/NAK_POS>-FULL_NAME = 1.
</NAKISA/NAK_POS>-FIRST_NAME = 1.
</NAKISA/NAK_POS>-LAST_NAME = 1.
</NAKISA/NAK_POS>-LAST_NAME2 = 1.

ENDLOOP.

LOOP AT IT_/NAKISA/NAK_POS INTO WA_/NAKISA/NAK_POS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/NAKISA/NAK_POS-NICKNAME, sy-vline,
  WA_/NAKISA/NAK_POS-MIDDLE_NAME, sy-vline,
  WA_/NAKISA/NAK_POS-NAME_TITLE, sy-vline,
  WA_/NAKISA/NAK_POS-NAME_TITLE2, sy-vline,
  WA_/NAKISA/NAK_POS-NAME_PREFIX, sy-vline,
  WA_/NAKISA/NAK_POS-NAME_PREFIX2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/NAKISA/NAK_POS 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_/NAKISA/NAK_POS 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_/NAKISA/NAK_POS INTO WA_/NAKISA/NAK_POS.


*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_/NAKISA/NAK_POS_STR, 
PERSONNEL_ID TYPE STRING,
FULL_NAME TYPE STRING,
FIRST_NAME TYPE STRING,
LAST_NAME TYPE STRING,
LAST_NAME2 TYPE STRING,
NICKNAME TYPE STRING,
MIDDLE_NAME TYPE STRING,
NAME_TITLE TYPE STRING,
NAME_TITLE2 TYPE STRING,
NAME_PREFIX TYPE STRING,
NAME_PREFIX2 TYPE STRING,
FORMOFADDR TYPE STRING,
FIRSTNAME_K TYPE STRING,
FIRSTNAME_R TYPE STRING,
LASTNAME_K TYPE STRING,
LASTNAME_R TYPE STRING,
NICKNAME_K TYPE STRING,
NICKNAME_R TYPE STRING,
PICTURE_URL TYPE STRING,
POSITION_ID TYPE STRING,
POSITION_NAME TYPE STRING,
POSITION_ABBR TYPE STRING,
ASSISTANT_ICON TYPE STRING,
DEPT_ICON TYPE STRING,
MANAGER_ICON TYPE STRING,
VACANT_ICON TYPE STRING,
SHAREDPOS_ICON TYPE STRING,
NATIONALITY_COUNTRY TYPE STRING,
LOCATION_COUNTRY TYPE STRING,
TELEPHONE_NUMBER TYPE STRING,
EMAIL_ADDRESS TYPE STRING,
HAS_POS_CHILDREN TYPE STRING,
IS_OU_DOTTED TYPE STRING,
IS_S_DOTTED TYPE STRING,
ORGUNIT_ID_P TYPE STRING,
POSITION_ID_P TYPE STRING,
POTENTIAL_ID TYPE STRING,
POTENTIAL_DESC TYPE STRING,
PERFORMANCE_ID TYPE STRING,
PERFORMANCE_DESC TYPE STRING,
KEYPOS_STATUS_ID TYPE STRING,
KEYPOS_STATUS_DESC TYPE STRING,
KEYPOS_INHERITED TYPE STRING,
RISK_ID TYPE STRING,
RISK_DESC TYPE STRING,
READINESS_ID TYPE STRING,
READINESS_DESC TYPE STRING,
CENTRAL_PERSONNEL_ID TYPE STRING,
SUCCESSOR_BENCH_STRENGTH TYPE STRING,
HAS_SUCCESSOR_CHILDREN TYPE STRING,
COUNT_SUCCESSOR_CHILDREN TYPE STRING,
COUNT_POS_CHILDREN TYPE STRING,
COUNT_SUCCESSOR_CHILDREN_IMDLY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/NAKISA/NAK_POS_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_/NAKISA/NAK_POS_STR-PERSONNEL_ID sy-vline 
WA_/NAKISA/NAK_POS_STR-FULL_NAME sy-vline 
WA_/NAKISA/NAK_POS_STR-FIRST_NAME sy-vline 
WA_/NAKISA/NAK_POS_STR-LAST_NAME sy-vline 
WA_/NAKISA/NAK_POS_STR-LAST_NAME2 sy-vline 
WA_/NAKISA/NAK_POS_STR-NICKNAME sy-vline 
WA_/NAKISA/NAK_POS_STR-MIDDLE_NAME sy-vline 
WA_/NAKISA/NAK_POS_STR-NAME_TITLE sy-vline 
WA_/NAKISA/NAK_POS_STR-NAME_TITLE2 sy-vline 
WA_/NAKISA/NAK_POS_STR-NAME_PREFIX sy-vline 
WA_/NAKISA/NAK_POS_STR-NAME_PREFIX2 sy-vline 
WA_/NAKISA/NAK_POS_STR-FORMOFADDR sy-vline 
WA_/NAKISA/NAK_POS_STR-FIRSTNAME_K sy-vline 
WA_/NAKISA/NAK_POS_STR-FIRSTNAME_R sy-vline 
WA_/NAKISA/NAK_POS_STR-LASTNAME_K sy-vline 
WA_/NAKISA/NAK_POS_STR-LASTNAME_R sy-vline 
WA_/NAKISA/NAK_POS_STR-NICKNAME_K sy-vline 
WA_/NAKISA/NAK_POS_STR-NICKNAME_R sy-vline 
WA_/NAKISA/NAK_POS_STR-PICTURE_URL sy-vline 
WA_/NAKISA/NAK_POS_STR-POSITION_ID sy-vline 
WA_/NAKISA/NAK_POS_STR-POSITION_NAME sy-vline 
WA_/NAKISA/NAK_POS_STR-POSITION_ABBR sy-vline 
WA_/NAKISA/NAK_POS_STR-ASSISTANT_ICON sy-vline 
WA_/NAKISA/NAK_POS_STR-DEPT_ICON sy-vline 
WA_/NAKISA/NAK_POS_STR-MANAGER_ICON sy-vline 
WA_/NAKISA/NAK_POS_STR-VACANT_ICON sy-vline 
WA_/NAKISA/NAK_POS_STR-SHAREDPOS_ICON sy-vline 
WA_/NAKISA/NAK_POS_STR-NATIONALITY_COUNTRY sy-vline 
WA_/NAKISA/NAK_POS_STR-LOCATION_COUNTRY sy-vline 
WA_/NAKISA/NAK_POS_STR-TELEPHONE_NUMBER sy-vline 
WA_/NAKISA/NAK_POS_STR-EMAIL_ADDRESS sy-vline 
WA_/NAKISA/NAK_POS_STR-HAS_POS_CHILDREN sy-vline 
WA_/NAKISA/NAK_POS_STR-IS_OU_DOTTED sy-vline 
WA_/NAKISA/NAK_POS_STR-IS_S_DOTTED sy-vline 
WA_/NAKISA/NAK_POS_STR-ORGUNIT_ID_P sy-vline 
WA_/NAKISA/NAK_POS_STR-POSITION_ID_P sy-vline 
WA_/NAKISA/NAK_POS_STR-POTENTIAL_ID sy-vline 
WA_/NAKISA/NAK_POS_STR-POTENTIAL_DESC sy-vline 
WA_/NAKISA/NAK_POS_STR-PERFORMANCE_ID sy-vline 
WA_/NAKISA/NAK_POS_STR-PERFORMANCE_DESC sy-vline 
WA_/NAKISA/NAK_POS_STR-KEYPOS_STATUS_ID sy-vline 
WA_/NAKISA/NAK_POS_STR-KEYPOS_STATUS_DESC sy-vline 
WA_/NAKISA/NAK_POS_STR-KEYPOS_INHERITED sy-vline 
WA_/NAKISA/NAK_POS_STR-RISK_ID sy-vline 
WA_/NAKISA/NAK_POS_STR-RISK_DESC sy-vline 
WA_/NAKISA/NAK_POS_STR-READINESS_ID sy-vline 
WA_/NAKISA/NAK_POS_STR-READINESS_DESC sy-vline 
WA_/NAKISA/NAK_POS_STR-CENTRAL_PERSONNEL_ID sy-vline 
WA_/NAKISA/NAK_POS_STR-SUCCESSOR_BENCH_STRENGTH sy-vline 
WA_/NAKISA/NAK_POS_STR-HAS_SUCCESSOR_CHILDREN sy-vline 
WA_/NAKISA/NAK_POS_STR-COUNT_SUCCESSOR_CHILDREN sy-vline 
WA_/NAKISA/NAK_POS_STR-COUNT_POS_CHILDREN sy-vline 
WA_/NAKISA/NAK_POS_STR-COUNT_SUCCESSOR_CHILDREN_IMDLY sy-vline      INTO ld_text SEPARATED BY SPACE.

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