ABAP Select data from SAP table HRT7406 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRT7406 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 HRT7406. 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 HRT7406 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_HRT7406 TYPE STANDARD TABLE OF HRT7406,
      WA_HRT7406 TYPE HRT7406,
      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: <HRT7406> TYPE HRT7406.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRT7406.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRT7406
  INTO TABLE IT_HRT7406.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRT7406
*  INTO TABLE @DATA(IT_HRT74062).
*--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_HRT7406 INDEX 1 INTO DATA(WA_HRT74062).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRT7406 ASSIGNING <HRT7406>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRT7406>-MANDT = 1.
<HRT7406>-TABNR = 1.
<HRT7406>-TABSEQNR = 1.
<HRT7406>-COUNTRY_GROUP = 1.
<HRT7406>-COUNTRY = 1.

ENDLOOP.

LOOP AT IT_HRT7406 INTO WA_HRT7406.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRT7406-AREA_OF_COUNTRY, sy-vline,
  WA_HRT7406-REGION, sy-vline,
  WA_HRT7406-LOCATION_TYPE, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_HRT7406 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_HRT7406 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_HRT7406 INTO WA_HRT7406.


*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_HRT7406_STR, 
MANDT TYPE STRING,
TABNR TYPE STRING,
TABSEQNR TYPE STRING,
COUNTRY_GROUP TYPE STRING,
COUNTRY TYPE STRING,
AREA_OF_COUNTRY TYPE STRING,
REGION TYPE STRING,
LOCATION_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRT7406_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_HRT7406_STR-MANDT sy-vline 
WA_HRT7406_STR-TABNR sy-vline 
WA_HRT7406_STR-TABSEQNR sy-vline 
WA_HRT7406_STR-COUNTRY_GROUP sy-vline 
WA_HRT7406_STR-COUNTRY sy-vline 
WA_HRT7406_STR-AREA_OF_COUNTRY sy-vline 
WA_HRT7406_STR-REGION sy-vline 
WA_HRT7406_STR-LOCATION_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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