ABAP Select data from SAP table HRESS_S_ITDCL_OVR_MY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRESS_S_ITDCL_OVR_MY
*  INTO TABLE @DATA(IT_HRESS_S_ITDCL_OVR_MY2).
*--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_HRESS_S_ITDCL_OVR_MY INDEX 1 INTO DATA(WA_HRESS_S_ITDCL_OVR_MY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRESS_S_ITDCL_OVR_MY>-PARENT_KEY = 1.
<HRESS_S_ITDCL_OVR_MY>-ROW_KEY = 1.
<HRESS_S_ITDCL_OVR_MY>-EXPANDED = 1.
<HRESS_S_ITDCL_OVR_MY>-IS_LEAF = 1.
<HRESS_S_ITDCL_OVR_MY>-TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRESS_S_ITDCL_OVR_MY-CHILDREN_LOADED, sy-vline,
  WA_HRESS_S_ITDCL_OVR_MY-IMAGE_SRC, sy-vline,
  WA_HRESS_S_ITDCL_OVR_MY-CSTAT, sy-vline,
  WA_HRESS_S_ITDCL_OVR_MY-PERNR, sy-vline,
  WA_HRESS_S_ITDCL_OVR_MY-PHASE, sy-vline,
  WA_HRESS_S_ITDCL_OVR_MY-REFNO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRESS_S_ITDCL_OVR_MY 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_HRESS_S_ITDCL_OVR_MY 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_HRESS_S_ITDCL_OVR_MY INTO WA_HRESS_S_ITDCL_OVR_MY.


*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_HRESS_S_ITDCL_OVR_MY_STR, 
PARENT_KEY TYPE STRING,
ROW_KEY TYPE STRING,
EXPANDED TYPE STRING,
IS_LEAF TYPE STRING,
TEXT TYPE STRING,
CHILDREN_LOADED TYPE STRING,
IMAGE_SRC TYPE STRING,
CSTAT TYPE STRING,
PERNR TYPE STRING,
PHASE TYPE STRING,
REFNO TYPE STRING,
SEQNR TYPE STRING,
RETYP TYPE STRING,
OPDTY TYPE STRING,
RQCDT TYPE STRING,
RECNO TYPE STRING,
DESCR TYPE STRING,
PAYDT TYPE STRING,
TOTAMT TYPE STRING,
UNIT TYPE STRING,
UTEXT TYPE STRING,
VALID_TO TYPE STRING,
WAERS TYPE STRING,
VALID_FROM TYPE STRING,
RQAMT TYPE STRING,
APAMT TYPE STRING,
CAPMT TYPE STRING,
DEL_FLAG TYPE STRING,
DEL_BUTT_STATUS TYPE STRING,
APUID TYPE STRING,
APTXT TYPE STRING,
RESET_BUT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRESS_S_ITDCL_OVR_MY_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_HRESS_S_ITDCL_OVR_MY_STR-PARENT_KEY sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-ROW_KEY sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-EXPANDED sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-IS_LEAF sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-TEXT sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-CHILDREN_LOADED sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-IMAGE_SRC sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-CSTAT sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-PERNR sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-PHASE sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-REFNO sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-SEQNR sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-RETYP sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-OPDTY sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-RQCDT sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-RECNO sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-DESCR sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-PAYDT sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-TOTAMT sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-UNIT sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-UTEXT sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-VALID_TO sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-WAERS sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-VALID_FROM sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-RQAMT sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-APAMT sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-CAPMT sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-DEL_FLAG sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-DEL_BUTT_STATUS sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-APUID sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-APTXT sy-vline 
WA_HRESS_S_ITDCL_OVR_MY_STR-RESET_BUT sy-vline      INTO ld_text SEPARATED BY SPACE.

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