ABAP Select data from SAP table HRTNM_S_HISTO_TN_LSO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRTNM_S_HISTO_TN_LSO
*  INTO TABLE @DATA(IT_HRTNM_S_HISTO_TN_LSO2).
*--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_HRTNM_S_HISTO_TN_LSO INDEX 1 INTO DATA(WA_HRTNM_S_HISTO_TN_LSO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRTNM_S_HISTO_TN_LSO>-PLVTN = 1.
<HRTNM_S_HISTO_TN_LSO>-OTYTN = 1.
<HRTNM_S_HISTO_TN_LSO>-OBJTN = 1.
<HRTNM_S_HISTO_TN_LSO>-STXTN = 1.
<HRTNM_S_HISTO_TN_LSO>-LTXTN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRTNM_S_HISTO_TN_LSO-BEGTN, sy-vline,
  WA_HRTNM_S_HISTO_TN_LSO-ENDTN, sy-vline,
  WA_HRTNM_S_HISTO_TN_LSO-ISTTN, sy-vline,
  WA_HRTNM_S_HISTO_TN_LSO-ICON, sy-vline,
  WA_HRTNM_S_HISTO_TN_LSO-TYPE, sy-vline,
  WA_HRTNM_S_HISTO_TN_LSO-TNAST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRTNM_S_HISTO_TN_LSO 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_HRTNM_S_HISTO_TN_LSO 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_HRTNM_S_HISTO_TN_LSO INTO WA_HRTNM_S_HISTO_TN_LSO.


*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_HRTNM_S_HISTO_TN_LSO_STR, 
PLVTN TYPE STRING,
OTYTN TYPE STRING,
OBJTN TYPE STRING,
STXTN TYPE STRING,
LTXTN TYPE STRING,
BEGTN TYPE STRING,
ENDTN TYPE STRING,
ISTTN TYPE STRING,
ICON TYPE STRING,
TYPE TYPE STRING,
TNAST TYPE STRING,
TNAST_TXT TYPE STRING,
TLREF TYPE STRING,
TLREF_TXT TYPE STRING,
NDAYS TYPE STRING,
TOTDU TYPE STRING,
CATOT TYPE STRING,
CATOI TYPE STRING,
CATSH TYPE STRING,
CATLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRTNM_S_HISTO_TN_LSO_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_HRTNM_S_HISTO_TN_LSO_STR-PLVTN sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-OTYTN sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-OBJTN sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-STXTN sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-LTXTN sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-BEGTN sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-ENDTN sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-ISTTN sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-ICON sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-TYPE sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-TNAST sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-TNAST_TXT sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-TLREF sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-TLREF_TXT sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-NDAYS sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-TOTDU sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-CATOT sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-CATOI sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-CATSH sy-vline 
WA_HRTNM_S_HISTO_TN_LSO_STR-CATLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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