ABAP Select data from SAP table LSO_RHKURS30_EXT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP LSO_RHKURS30_EXT 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 LSO_RHKURS30_EXT. 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 LSO_RHKURS30_EXT 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_LSO_RHKURS30_EXT TYPE STANDARD TABLE OF LSO_RHKURS30_EXT,
      WA_LSO_RHKURS30_EXT TYPE LSO_RHKURS30_EXT,
      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: <LSO_RHKURS30_EXT> TYPE LSO_RHKURS30_EXT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_LSO_RHKURS30_EXT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM LSO_RHKURS30_EXT
  INTO TABLE IT_LSO_RHKURS30_EXT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LSO_RHKURS30_EXT
*  INTO TABLE @DATA(IT_LSO_RHKURS30_EXT2).
*--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_LSO_RHKURS30_EXT INDEX 1 INTO DATA(WA_LSO_RHKURS30_EXT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_LSO_RHKURS30_EXT ASSIGNING <LSO_RHKURS30_EXT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LSO_RHKURS30_EXT>-ETTYP = 1.
<LSO_RHKURS30_EXT>-ETYID = 1.
<LSO_RHKURS30_EXT>-ETSHT = 1.
<LSO_RHKURS30_EXT>-ETSTX = 1.
<LSO_RHKURS30_EXT>-TFORM = 1.

ENDLOOP.

LOOP AT IT_LSO_RHKURS30_EXT INTO WA_LSO_RHKURS30_EXT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LSO_RHKURS30_EXT-TXTSING, sy-vline,
  WA_LSO_RHKURS30_EXT-REVIX, sy-vline,
  WA_LSO_RHKURS30_EXT-MANZL, sy-vline,
  WA_LSO_RHKURS30_EXT-KKOST, sy-vline,
  WA_LSO_RHKURS30_EXT-KWAER, sy-vline,
  WA_LSO_RHKURS30_EXT-EVETY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LSO_RHKURS30_EXT 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_LSO_RHKURS30_EXT 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_LSO_RHKURS30_EXT INTO WA_LSO_RHKURS30_EXT.


*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_LSO_RHKURS30_EXT_STR, 
ETTYP TYPE STRING,
ETYID TYPE STRING,
ETSHT TYPE STRING,
ETSTX TYPE STRING,
TFORM TYPE STRING,
TXTSING TYPE STRING,
REVIX TYPE STRING,
MANZL TYPE STRING,
KKOST TYPE STRING,
KWAER TYPE STRING,
EVETY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LSO_RHKURS30_EXT_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_LSO_RHKURS30_EXT_STR-ETTYP sy-vline 
WA_LSO_RHKURS30_EXT_STR-ETYID sy-vline 
WA_LSO_RHKURS30_EXT_STR-ETSHT sy-vline 
WA_LSO_RHKURS30_EXT_STR-ETSTX sy-vline 
WA_LSO_RHKURS30_EXT_STR-TFORM sy-vline 
WA_LSO_RHKURS30_EXT_STR-TXTSING sy-vline 
WA_LSO_RHKURS30_EXT_STR-REVIX sy-vline 
WA_LSO_RHKURS30_EXT_STR-MANZL sy-vline 
WA_LSO_RHKURS30_EXT_STR-KKOST sy-vline 
WA_LSO_RHKURS30_EXT_STR-KWAER sy-vline 
WA_LSO_RHKURS30_EXT_STR-EVETY sy-vline      INTO ld_text SEPARATED BY SPACE.

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