ABAP Select data from SAP table HRI1721 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRI1721 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 HRI1721. 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 HRI1721 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_HRI1721 TYPE STANDARD TABLE OF HRI1721,
      WA_HRI1721 TYPE HRI1721,
      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: <HRI1721> TYPE HRI1721.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRI1721.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRI1721
  INTO TABLE IT_HRI1721.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRI1721
*  INTO TABLE @DATA(IT_HRI17212).
*--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_HRI1721 INDEX 1 INTO DATA(WA_HRI17212).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRI1721 ASSIGNING <HRI1721>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRI1721>-TEST_GUID = 1.
<HRI1721>-TESTEO = 1.
<HRI1721>-TRANSEO = 1.
<HRI1721>-TESTTYPE = 1.
<HRI1721>-SESSIONID = 1.

ENDLOOP.

LOOP AT IT_HRI1721 INTO WA_HRI1721.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRI1721-SESSIONYEAR, sy-vline,
  WA_HRI1721-ENTRYDATE, sy-vline,
  WA_HRI1721-TESTPASSFAIL, sy-vline,
  WA_HRI1721-TESTTOTRES, sy-vline,
  WA_HRI1721-TESTTOTRESNORM, sy-vline,
  WA_HRI1721-TESTSCALE_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRI1721 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_HRI1721 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_HRI1721 INTO WA_HRI1721.


*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_HRI1721_STR, 
TEST_GUID TYPE STRING,
TESTEO TYPE STRING,
TRANSEO TYPE STRING,
TESTTYPE TYPE STRING,
SESSIONID TYPE STRING,
SESSIONYEAR TYPE STRING,
ENTRYDATE TYPE STRING,
TESTPASSFAIL TYPE STRING,
TESTTOTRES TYPE STRING,
TESTTOTRESNORM TYPE STRING,
TESTSCALE_ID TYPE STRING,
TOTALPERCENT1 TYPE STRING,
TOTALPERCENT2 TYPE STRING,
ENTRYMODE TYPE STRING,
RESULTSTATUS TYPE STRING,
STATUSREASON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRI1721_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_HRI1721_STR-TEST_GUID sy-vline 
WA_HRI1721_STR-TESTEO sy-vline 
WA_HRI1721_STR-TRANSEO sy-vline 
WA_HRI1721_STR-TESTTYPE sy-vline 
WA_HRI1721_STR-SESSIONID sy-vline 
WA_HRI1721_STR-SESSIONYEAR sy-vline 
WA_HRI1721_STR-ENTRYDATE sy-vline 
WA_HRI1721_STR-TESTPASSFAIL sy-vline 
WA_HRI1721_STR-TESTTOTRES sy-vline 
WA_HRI1721_STR-TESTTOTRESNORM sy-vline 
WA_HRI1721_STR-TESTSCALE_ID sy-vline 
WA_HRI1721_STR-TOTALPERCENT1 sy-vline 
WA_HRI1721_STR-TOTALPERCENT2 sy-vline 
WA_HRI1721_STR-ENTRYMODE sy-vline 
WA_HRI1721_STR-RESULTSTATUS sy-vline 
WA_HRI1721_STR-STATUSREASON sy-vline      INTO ld_text SEPARATED BY SPACE.

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