ABAP Select data from SAP table HRS1212 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRS1212 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 HRS1212. 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 HRS1212 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_HRS1212 TYPE STANDARD TABLE OF HRS1212,
      WA_HRS1212 TYPE HRS1212,
      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: <HRS1212> TYPE HRS1212.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRS1212.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRS1212
  INTO TABLE IT_HRS1212.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRS1212
*  INTO TABLE @DATA(IT_HRS12122).
*--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_HRS1212 INDEX 1 INTO DATA(WA_HRS12122).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRS1212 ASSIGNING <HRS1212>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRS1212>-OTYPE = 1.
<HRS1212>-OBJID = 1.
<HRS1212>-SUBTY = 1.
<HRS1212>-CLSTYP = 1.
<HRS1212>-OBJTYP = 1.

ENDLOOP.

LOOP AT IT_HRS1212 INTO WA_HRS1212.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRS1212-CLSNAM, sy-vline,
  WA_HRS1212-EVENT, sy-vline,
  WA_HRS1212-DATAFLOW, sy-vline,
  WA_HRS1212-ELEMENT, sy-vline,
  WA_HRS1212-TAB_INDEX, sy-vline,
  WA_HRS1212-AEDTM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRS1212 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_HRS1212 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_HRS1212 INTO WA_HRS1212.


*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_HRS1212_STR, 
OTYPE TYPE STRING,
OBJID TYPE STRING,
SUBTY TYPE STRING,
CLSTYP TYPE STRING,
OBJTYP TYPE STRING,
CLSNAM TYPE STRING,
EVENT TYPE STRING,
DATAFLOW TYPE STRING,
ELEMENT TYPE STRING,
TAB_INDEX TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
EV_ELEMENT TYPE STRING,
REFTYPE TYPE STRING,
REFOBJTYPE TYPE STRING,
REFSTRUCT TYPE STRING,
REFFIELD TYPE STRING,
ATTRTYPE TYPE STRING,
ELEMLENGTH TYPE STRING,
TYPE TYPE STRING,
EXPR TYPE STRING,
FLENG TYPE STRING,
SOURCETYPE TYPE STRING,
TARGETTYPE TYPE STRING,
TARGETEXPR TYPE STRING,
OPERATION TYPE STRING,
OPCLASS TYPE STRING,
SKIPSNULL TYPE STRING,
SKIPSINIT TYPE STRING,
NOVERWRITE TYPE STRING,
SKIPERROR TYPE STRING,
MOVE_CORR TYPE STRING,
TRANSTYPE TYPE STRING,
TRANSBASE TYPE STRING,
TRANSEXT TYPE STRING,
TRANSCATID TYPE STRING,
TRANSASYNC TYPE STRING,
TRANSDIALG TYPE STRING,
TRANSLOG TYPE STRING,
TRANSDEBUG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRS1212_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_HRS1212_STR-OTYPE sy-vline 
WA_HRS1212_STR-OBJID sy-vline 
WA_HRS1212_STR-SUBTY sy-vline 
WA_HRS1212_STR-CLSTYP sy-vline 
WA_HRS1212_STR-OBJTYP sy-vline 
WA_HRS1212_STR-CLSNAM sy-vline 
WA_HRS1212_STR-EVENT sy-vline 
WA_HRS1212_STR-DATAFLOW sy-vline 
WA_HRS1212_STR-ELEMENT sy-vline 
WA_HRS1212_STR-TAB_INDEX sy-vline 
WA_HRS1212_STR-AEDTM sy-vline 
WA_HRS1212_STR-UNAME sy-vline 
WA_HRS1212_STR-EV_ELEMENT sy-vline 
WA_HRS1212_STR-REFTYPE sy-vline 
WA_HRS1212_STR-REFOBJTYPE sy-vline 
WA_HRS1212_STR-REFSTRUCT sy-vline 
WA_HRS1212_STR-REFFIELD sy-vline 
WA_HRS1212_STR-ATTRTYPE sy-vline 
WA_HRS1212_STR-ELEMLENGTH sy-vline 
WA_HRS1212_STR-TYPE sy-vline 
WA_HRS1212_STR-EXPR sy-vline 
WA_HRS1212_STR-FLENG sy-vline 
WA_HRS1212_STR-SOURCETYPE sy-vline 
WA_HRS1212_STR-TARGETTYPE sy-vline 
WA_HRS1212_STR-TARGETEXPR sy-vline 
WA_HRS1212_STR-OPERATION sy-vline 
WA_HRS1212_STR-OPCLASS sy-vline 
WA_HRS1212_STR-SKIPSNULL sy-vline 
WA_HRS1212_STR-SKIPSINIT sy-vline 
WA_HRS1212_STR-NOVERWRITE sy-vline 
WA_HRS1212_STR-SKIPERROR sy-vline 
WA_HRS1212_STR-MOVE_CORR sy-vline 
WA_HRS1212_STR-TRANSTYPE sy-vline 
WA_HRS1212_STR-TRANSBASE sy-vline 
WA_HRS1212_STR-TRANSEXT sy-vline 
WA_HRS1212_STR-TRANSCATID sy-vline 
WA_HRS1212_STR-TRANSASYNC sy-vline 
WA_HRS1212_STR-TRANSDIALG sy-vline 
WA_HRS1212_STR-TRANSLOG sy-vline 
WA_HRS1212_STR-TRANSDEBUG sy-vline      INTO ld_text SEPARATED BY SPACE.

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