ABAP Select data from SAP table HRT1684 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRT1684 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 HRT1684. 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 HRT1684 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_HRT1684 TYPE STANDARD TABLE OF HRT1684,
      WA_HRT1684 TYPE HRT1684,
      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: <HRT1684> TYPE HRT1684.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRT1684.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRT1684
  INTO TABLE IT_HRT1684.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRT1684
*  INTO TABLE @DATA(IT_HRT16842).
*--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_HRT1684 INDEX 1 INTO DATA(WA_HRT16842).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRT1684 ASSIGNING <HRT1684>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRT1684>-MANDT = 1.
<HRT1684>-TABNR = 1.
<HRT1684>-TABSEQNR = 1.
<HRT1684>-ACCDT = 1.
<HRT1684>-REFER = 1.

ENDLOOP.

LOOP AT IT_HRT1684 INTO WA_HRT1684.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRT1684-BUPAR, sy-vline,
  WA_HRT1684-KOBES, sy-vline,
  WA_HRT1684-PRICE, sy-vline,
  WA_HRT1684-WAERS, sy-vline,
  WA_HRT1684-PERNR, sy-vline,
  WA_HRT1684-KOSTL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRT1684 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_HRT1684 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_HRT1684 INTO WA_HRT1684.


*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.

*Conversion exit ALPHA, internal->external for field BUPAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HRT1684-BUPAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRT1684-BUPAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HRT1684-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRT1684-KOSTL.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_HRT1684_STR, 
MANDT TYPE STRING,
TABNR TYPE STRING,
TABSEQNR TYPE STRING,
ACCDT TYPE STRING,
REFER TYPE STRING,
BUPAR TYPE STRING,
KOBES TYPE STRING,
PRICE TYPE STRING,
WAERS TYPE STRING,
PERNR TYPE STRING,
KOSTL TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
MOLPT TYPE STRING,
ATTTY TYPE STRING,
FIRM TYPE STRING,
ONGHT TYPE STRING,
IORDT TYPE STRING,
INVDT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRT1684_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_HRT1684_STR-MANDT sy-vline 
WA_HRT1684_STR-TABNR sy-vline 
WA_HRT1684_STR-TABSEQNR sy-vline 
WA_HRT1684_STR-ACCDT sy-vline 
WA_HRT1684_STR-REFER sy-vline 
WA_HRT1684_STR-BUPAR sy-vline 
WA_HRT1684_STR-KOBES sy-vline 
WA_HRT1684_STR-PRICE sy-vline 
WA_HRT1684_STR-WAERS sy-vline 
WA_HRT1684_STR-PERNR sy-vline 
WA_HRT1684_STR-KOSTL sy-vline 
WA_HRT1684_STR-WERKS sy-vline 
WA_HRT1684_STR-BTRTL sy-vline 
WA_HRT1684_STR-MOLPT sy-vline 
WA_HRT1684_STR-ATTTY sy-vline 
WA_HRT1684_STR-FIRM sy-vline 
WA_HRT1684_STR-ONGHT sy-vline 
WA_HRT1684_STR-IORDT sy-vline 
WA_HRT1684_STR-INVDT sy-vline      INTO ld_text SEPARATED BY SPACE.

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