ABAP Select data from SAP table HRSTASK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRSTASK
*  INTO TABLE @DATA(IT_HRSTASK2).
*--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_HRSTASK INDEX 1 INTO DATA(WA_HRSTASK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRSTASK>-OTYPE_TEXT = 1.
<HRSTASK>-OTYP2_TEXT = 1.
<HRSTASK>-WS_TEXT = 1.
<HRSTASK>-TG_TEXT = 1.
<HRSTASK>-OBJID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRSTASK-BASEDATA, sy-vline,
  WA_HRSTASK-OBJECTMETH, sy-vline,
  WA_HRSTASK-SYNCHRON, sy-vline,
  WA_HRSTASK-OM_DIALOG, sy-vline,
  WA_HRSTASK-I_O_TXT, sy-vline,
  WA_HRSTASK-CONT_EDIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRSTASK 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_HRSTASK 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_HRSTASK INTO WA_HRSTASK.


*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_HRSTASK_STR, 
OTYPE_TEXT TYPE STRING,
OTYP2_TEXT TYPE STRING,
WS_TEXT TYPE STRING,
TG_TEXT TYPE STRING,
OBJID TYPE STRING,
BASEDATA TYPE STRING,
OBJECTMETH TYPE STRING,
SYNCHRON TYPE STRING,
OM_DIALOG TYPE STRING,
I_O_TXT TYPE STRING,
CONT_EDIT TYPE STRING,
OM_BIND TYPE STRING,
INIT_BIND TYPE STRING,
ATTR_TXT TYPE STRING,
CONTDATA TYPE STRING,
DEF_RDATA TYPE STRING,
DEF_ROLE TYPE STRING,
DEF_R_TEXT TYPE STRING,
DEF_R_BIND TYPE STRING,
NOT_RDATA TYPE STRING,
NOT_ROLE TYPE STRING,
NOT_R_TEXT TYPE STRING,
NOT_R_BIND TYPE STRING,
DEA_RDATA TYPE STRING,
DEA_ROLE TYPE STRING,
DEA_R_TEXT TYPE STRING,
DEA_R_BIND TYPE STRING,
END_RDATA TYPE STRING,
END_ROLE TYPE STRING,
END_R_TEXT TYPE STRING,
END_R_BIND TYPE STRING,
LAT_RDATA TYPE STRING,
LAT_ROLE TYPE STRING,
LAT_R_TEXT TYPE STRING,
LAT_R_BIND TYPE STRING,
BIND_EDIT TYPE STRING,
BIND_EDIT2 TYPE STRING,
BIND_EDIT3 TYPE STRING,
BIND_EDIT4 TYPE STRING,
BIND_EDIT5 TYPE STRING,
BIND_SLCT TYPE STRING,
EVENT_BIND TYPE STRING,
EVENT_TEXT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
SHORT TYPE STRING,
OBJSEARK TYPE STRING,
W_OBJTYP TYPE STRING,
W_TASK TYPE STRING,
W_WFTASK TYPE STRING,
WORKAREA TYPE STRING,
S_OBJSEARK TYPE STRING,
PERSONNEL TYPE STRING,
SELECTION TYPE STRING,
TXT_FROM TYPE STRING,
TXT_TO TYPE STRING,
TRANS TYPE STRING,
W_CHOOSE TYPE STRING,
S_OTYPE TYPE STRING,
T_OTYPE TYPE STRING,
S_OT_TEXT TYPE STRING,
T_OT_TEXT TYPE STRING,
S_PLVAR TYPE STRING,
T_PLVAR TYPE STRING,
S_PLV_TEXT TYPE STRING,
T_PLV_TEXT TYPE STRING,
EDITOR TYPE STRING,
EDIT_2 TYPE STRING,
WFD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRSTASK_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_HRSTASK_STR-OTYPE_TEXT sy-vline 
WA_HRSTASK_STR-OTYP2_TEXT sy-vline 
WA_HRSTASK_STR-WS_TEXT sy-vline 
WA_HRSTASK_STR-TG_TEXT sy-vline 
WA_HRSTASK_STR-OBJID sy-vline 
WA_HRSTASK_STR-BASEDATA sy-vline 
WA_HRSTASK_STR-OBJECTMETH sy-vline 
WA_HRSTASK_STR-SYNCHRON sy-vline 
WA_HRSTASK_STR-OM_DIALOG sy-vline 
WA_HRSTASK_STR-I_O_TXT sy-vline 
WA_HRSTASK_STR-CONT_EDIT sy-vline 
WA_HRSTASK_STR-OM_BIND sy-vline 
WA_HRSTASK_STR-INIT_BIND sy-vline 
WA_HRSTASK_STR-ATTR_TXT sy-vline 
WA_HRSTASK_STR-CONTDATA sy-vline 
WA_HRSTASK_STR-DEF_RDATA sy-vline 
WA_HRSTASK_STR-DEF_ROLE sy-vline 
WA_HRSTASK_STR-DEF_R_TEXT sy-vline 
WA_HRSTASK_STR-DEF_R_BIND sy-vline 
WA_HRSTASK_STR-NOT_RDATA sy-vline 
WA_HRSTASK_STR-NOT_ROLE sy-vline 
WA_HRSTASK_STR-NOT_R_TEXT sy-vline 
WA_HRSTASK_STR-NOT_R_BIND sy-vline 
WA_HRSTASK_STR-DEA_RDATA sy-vline 
WA_HRSTASK_STR-DEA_ROLE sy-vline 
WA_HRSTASK_STR-DEA_R_TEXT sy-vline 
WA_HRSTASK_STR-DEA_R_BIND sy-vline 
WA_HRSTASK_STR-END_RDATA sy-vline 
WA_HRSTASK_STR-END_ROLE sy-vline 
WA_HRSTASK_STR-END_R_TEXT sy-vline 
WA_HRSTASK_STR-END_R_BIND sy-vline 
WA_HRSTASK_STR-LAT_RDATA sy-vline 
WA_HRSTASK_STR-LAT_ROLE sy-vline 
WA_HRSTASK_STR-LAT_R_TEXT sy-vline 
WA_HRSTASK_STR-LAT_R_BIND sy-vline 
WA_HRSTASK_STR-BIND_EDIT sy-vline 
WA_HRSTASK_STR-BIND_EDIT2 sy-vline 
WA_HRSTASK_STR-BIND_EDIT3 sy-vline 
WA_HRSTASK_STR-BIND_EDIT4 sy-vline 
WA_HRSTASK_STR-BIND_EDIT5 sy-vline 
WA_HRSTASK_STR-BIND_SLCT sy-vline 
WA_HRSTASK_STR-EVENT_BIND sy-vline 
WA_HRSTASK_STR-EVENT_TEXT sy-vline 
WA_HRSTASK_STR-BEGDA sy-vline 
WA_HRSTASK_STR-ENDDA sy-vline 
WA_HRSTASK_STR-SHORT sy-vline 
WA_HRSTASK_STR-OBJSEARK sy-vline 
WA_HRSTASK_STR-W_OBJTYP sy-vline 
WA_HRSTASK_STR-W_TASK sy-vline 
WA_HRSTASK_STR-W_WFTASK sy-vline 
WA_HRSTASK_STR-WORKAREA sy-vline 
WA_HRSTASK_STR-S_OBJSEARK sy-vline 
WA_HRSTASK_STR-PERSONNEL sy-vline 
WA_HRSTASK_STR-SELECTION sy-vline 
WA_HRSTASK_STR-TXT_FROM sy-vline 
WA_HRSTASK_STR-TXT_TO sy-vline 
WA_HRSTASK_STR-TRANS sy-vline 
WA_HRSTASK_STR-W_CHOOSE sy-vline 
WA_HRSTASK_STR-S_OTYPE sy-vline 
WA_HRSTASK_STR-T_OTYPE sy-vline 
WA_HRSTASK_STR-S_OT_TEXT sy-vline 
WA_HRSTASK_STR-T_OT_TEXT sy-vline 
WA_HRSTASK_STR-S_PLVAR sy-vline 
WA_HRSTASK_STR-T_PLVAR sy-vline 
WA_HRSTASK_STR-S_PLV_TEXT sy-vline 
WA_HRSTASK_STR-T_PLV_TEXT sy-vline 
WA_HRSTASK_STR-EDITOR sy-vline 
WA_HRSTASK_STR-EDIT_2 sy-vline 
WA_HRSTASK_STR-WFD sy-vline      INTO ld_text SEPARATED BY SPACE.

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