ABAP Select data from SAP table HRRESTYTAB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRRESTYTAB
*  INTO TABLE @DATA(IT_HRRESTYTAB2).
*--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_HRRESTYTAB INDEX 1 INTO DATA(WA_HRRESTYTAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRRESTYTAB>-RPLVAR = 1.
<HRRESTYTAB>-ROTYPE = 1.
<HRRESTYTAB>-ROBJID = 1.
<HRRESTYTAB>-BEGDA = 1.
<HRRESTYTAB>-ENDDA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRRESTYTAB-PLVAR, sy-vline,
  WA_HRRESTYTAB-OTYPE, sy-vline,
  WA_HRRESTYTAB-OBJID, sy-vline,
  WA_HRRESTYTAB-SHORT, sy-vline,
  WA_HRRESTYTAB-STEXT, sy-vline,
  WA_HRRESTYTAB-ORTID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRRESTYTAB 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_HRRESTYTAB 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_HRRESTYTAB INTO WA_HRRESTYTAB.


*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_HRRESTYTAB_STR, 
RPLVAR TYPE STRING,
ROTYPE TYPE STRING,
ROBJID TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
SHORT TYPE STRING,
STEXT TYPE STRING,
ORTID TYPE STRING,
ORTSH TYPE STRING,
ORTTX TYPE STRING,
KAPZ1 TYPE STRING,
KAPZ2 TYPE STRING,
KAPZ3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRRESTYTAB_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_HRRESTYTAB_STR-RPLVAR sy-vline 
WA_HRRESTYTAB_STR-ROTYPE sy-vline 
WA_HRRESTYTAB_STR-ROBJID sy-vline 
WA_HRRESTYTAB_STR-BEGDA sy-vline 
WA_HRRESTYTAB_STR-ENDDA sy-vline 
WA_HRRESTYTAB_STR-PLVAR sy-vline 
WA_HRRESTYTAB_STR-OTYPE sy-vline 
WA_HRRESTYTAB_STR-OBJID sy-vline 
WA_HRRESTYTAB_STR-SHORT sy-vline 
WA_HRRESTYTAB_STR-STEXT sy-vline 
WA_HRRESTYTAB_STR-ORTID sy-vline 
WA_HRRESTYTAB_STR-ORTSH sy-vline 
WA_HRRESTYTAB_STR-ORTTX sy-vline 
WA_HRRESTYTAB_STR-KAPZ1 sy-vline 
WA_HRRESTYTAB_STR-KAPZ2 sy-vline 
WA_HRRESTYTAB_STR-KAPZ3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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