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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /NAKISA/HRS_CENTRALPERSON
*  INTO TABLE @DATA(IT_/NAKISA/HRS_CENTRALPERSON2).
*--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/HRS_CENTRALPERSON INDEX 1 INTO DATA(WA_/NAKISA/HRS_CENTRALPERSON2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</NAKISA/HRS_CENTRALPERSON>-CHANGE_STATE_ID = 1.
</NAKISA/HRS_CENTRALPERSON>-VALIDITY_PERIOD = 1.
</NAKISA/HRS_CENTRALPERSON>-START_DATE = 1.
</NAKISA/HRS_CENTRALPERSON>-END_DATE = 1.
</NAKISA/HRS_CENTRALPERSON>-MANDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/NAKISA/HRS_CENTRALPERSON-PLVAR, sy-vline,
  WA_/NAKISA/HRS_CENTRALPERSON-OTYPE, sy-vline,
  WA_/NAKISA/HRS_CENTRALPERSON-OBJID, sy-vline,
  WA_/NAKISA/HRS_CENTRALPERSON-INFTY, sy-vline,
  WA_/NAKISA/HRS_CENTRALPERSON-SUBTY, sy-vline,
  WA_/NAKISA/HRS_CENTRALPERSON-ISTAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/NAKISA/HRS_CENTRALPERSON 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/HRS_CENTRALPERSON 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/HRS_CENTRALPERSON INTO WA_/NAKISA/HRS_CENTRALPERSON.


*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 ISOLA, internal->external for field SOBID_TLANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/NAKISA/HRS_CENTRALPERSON-SOBID_TLANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/NAKISA/HRS_CENTRALPERSON-SOBID_TLANGU.
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_/NAKISA/HRS_CENTRALPERSON_STR, 
CHANGE_STATE_ID TYPE STRING,
VALIDITY_PERIOD TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
PRIOX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
SCLAS TYPE STRING,
SOBID TYPE STRING,
PROZT TYPE STRING,
SOBID_SHORT TYPE STRING,
SOBID_STEXT TYPE STRING,
SOBID_TLANGU TYPE STRING,
STATUS TYPE STRING,
PROGRESS TYPE STRING,
REASON_FOR_CRE TYPE STRING,
CRE_DECIDED_BY TYPE STRING,
CLASSIFICATION TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
INHERITED TYPE STRING,
INH_SCLAS TYPE STRING,
INH_OBJID TYPE STRING,
INHERITED_TGT TYPE STRING,
OBSOLETE TYPE STRING,
ESSENTIAL TYPE STRING,
RANK TYPE STRING,
WEIGHT_PROZT TYPE STRING,
TARGET_DATE TYPE STRING,
COMPLETION_DATE TYPE STRING,
VISIBILITY TYPE STRING,
REASON_FOR_DEL TYPE STRING,
DEL_DECIDE_BY TYPE STRING,
COMMENT_LONG TYPE STRING,
ASSIGNED_BY_NAME TYPE STRING,
STATUS_NMAE TYPE STRING,
PROGRESS_NAME TYPE STRING,
PROGRESS_PERC TYPE STRING,
CLASSIFICATION_NAME TYPE STRING,
OBJID_STEXT TYPE STRING,
INH_OBJID_STEXT TYPE STRING,
REASON_FOR_CRE_NAME TYPE STRING,
CRE_DECIDED_BY_NAME TYPE STRING,
REASON_FOR_DEL_NAME TYPE STRING,
DEL_DECIDED_BY_NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/NAKISA/HRS_CENTRALPERSON_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/HRS_CENTRALPERSON_STR-CHANGE_STATE_ID sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-VALIDITY_PERIOD sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-START_DATE sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-END_DATE sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-MANDT sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-PLVAR sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-OTYPE sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-OBJID sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-INFTY sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-SUBTY sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-ISTAT sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-PRIOX sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-BEGDA sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-ENDDA sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-VARYF sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-SEQNR sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-SCLAS sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-SOBID sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-PROZT sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-SOBID_SHORT sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-SOBID_STEXT sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-SOBID_TLANGU sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-STATUS sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-PROGRESS sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-REASON_FOR_CRE sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-CRE_DECIDED_BY sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-CLASSIFICATION sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-START_DATE sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-END_DATE sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-INHERITED sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-INH_SCLAS sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-INH_OBJID sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-INHERITED_TGT sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-OBSOLETE sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-ESSENTIAL sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-RANK sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-WEIGHT_PROZT sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-TARGET_DATE sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-COMPLETION_DATE sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-VISIBILITY sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-REASON_FOR_DEL sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-DEL_DECIDE_BY sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-COMMENT_LONG sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-ASSIGNED_BY_NAME sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-STATUS_NMAE sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-PROGRESS_NAME sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-PROGRESS_PERC sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-CLASSIFICATION_NAME sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-OBJID_STEXT sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-INH_OBJID_STEXT sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-REASON_FOR_CRE_NAME sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-CRE_DECIDED_BY_NAME sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-REASON_FOR_DEL_NAME sy-vline 
WA_/NAKISA/HRS_CENTRALPERSON_STR-DEL_DECIDED_BY_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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