ABAP Select data from SAP table HRTNM_T_SNAP_TN_DELTA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRTNM_T_SNAP_TN_DELTA 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_T_SNAP_TN_DELTA. 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_T_SNAP_TN_DELTA 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_T_SNAP_TN_DELTA TYPE STANDARD TABLE OF HRTNM_T_SNAP_TN_DELTA,
      WA_HRTNM_T_SNAP_TN_DELTA TYPE HRTNM_T_SNAP_TN_DELTA,
      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_T_SNAP_TN_DELTA> TYPE HRTNM_T_SNAP_TN_DELTA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRTNM_T_SNAP_TN_DELTA
*  INTO TABLE @DATA(IT_HRTNM_T_SNAP_TN_DELTA2).
*--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_T_SNAP_TN_DELTA INDEX 1 INTO DATA(WA_HRTNM_T_SNAP_TN_DELTA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRTNM_T_SNAP_TN_DELTA>-SECTN = 1.
<HRTNM_T_SNAP_TN_DELTA>-CHILD = 1.
<HRTNM_T_SNAP_TN_DELTA>-OBJTN = 1.
<HRTNM_T_SNAP_TN_DELTA>-SHRTN = 1.
<HRTNM_T_SNAP_TN_DELTA>-NAMTN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRTNM_T_SNAP_TN_DELTA-BEGTN, sy-vline,
  WA_HRTNM_T_SNAP_TN_DELTA-ENDTN, sy-vline,
  WA_HRTNM_T_SNAP_TN_DELTA-STATU, sy-vline,
  WA_HRTNM_T_SNAP_TN_DELTA-REASO, sy-vline,
  WA_HRTNM_T_SNAP_TN_DELTA-TNOWN, sy-vline,
  WA_HRTNM_T_SNAP_TN_DELTA-PRIOT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRTNM_T_SNAP_TN_DELTA 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_T_SNAP_TN_DELTA 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_T_SNAP_TN_DELTA INTO WA_HRTNM_T_SNAP_TN_DELTA.


*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_T_SNAP_TN_DELTA_STR, 
SECTN TYPE STRING,
CHILD TYPE STRING,
OBJTN TYPE STRING,
SHRTN TYPE STRING,
NAMTN TYPE STRING,
BEGTN TYPE STRING,
ENDTN TYPE STRING,
STATU TYPE STRING,
REASO TYPE STRING,
TNOWN TYPE STRING,
PRIOT TYPE STRING,
PEBEG TYPE STRING,
PEEND TYPE STRING,
NBPER TYPE STRING,
KAPZ3 TYPE STRING,
TOTDU TYPE STRING,
TLREF TYPE STRING,
UPOBT TYPE STRING,
UPOBJ TYPE STRING,
EVOBT TYPE STRING,
EVOBJ TYPE STRING,
EVSHR TYPE STRING,
EVNAM TYPE STRING,
NBOLD TYPE STRING,
DTYPE TYPE STRING,
DCHIL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRTNM_T_SNAP_TN_DELTA_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_T_SNAP_TN_DELTA_STR-SECTN sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-CHILD sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-OBJTN sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-SHRTN sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-NAMTN sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-BEGTN sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-ENDTN sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-STATU sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-REASO sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-TNOWN sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-PRIOT sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-PEBEG sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-PEEND sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-NBPER sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-KAPZ3 sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-TOTDU sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-TLREF sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-UPOBT sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-UPOBJ sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-EVOBT sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-EVOBJ sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-EVSHR sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-EVNAM sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-NBOLD sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-DTYPE sy-vline 
WA_HRTNM_T_SNAP_TN_DELTA_STR-DCHIL sy-vline      INTO ld_text SEPARATED BY SPACE.

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