ABAP Select data from SAP table HRTB_P3408 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRTB_P3408 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 HRTB_P3408. 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 HRTB_P3408 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_HRTB_P3408 TYPE STANDARD TABLE OF HRTB_P3408,
      WA_HRTB_P3408 TYPE HRTB_P3408,
      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: <HRTB_P3408> TYPE HRTB_P3408.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRTB_P3408.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRTB_P3408
  INTO TABLE IT_HRTB_P3408.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRTB_P3408
*  INTO TABLE @DATA(IT_HRTB_P34082).
*--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_HRTB_P3408 INDEX 1 INTO DATA(WA_HRTB_P34082).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRTB_P3408 ASSIGNING <HRTB_P3408>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRTB_P3408>-PERNR = 1.
<HRTB_P3408>-BEGDA = 1.
<HRTB_P3408>-ENDDA = 1.
<HRTB_P3408>-TSUBTY = 1.
<HRTB_P3408>-GROUPING = 1.

ENDLOOP.

LOOP AT IT_HRTB_P3408 INTO WA_HRTB_P3408.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRTB_P3408-ROUTE_CODE, sy-vline,
  WA_HRTB_P3408-CLASS, sy-vline,
  WA_HRTB_P3408-FREQ, sy-vline,
  WA_HRTB_P3408-EETCKT, sy-vline,
  WA_HRTB_P3408-DEPTCKT1, sy-vline,
  WA_HRTB_P3408-TREFN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRTB_P3408 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_HRTB_P3408 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_HRTB_P3408 INTO WA_HRTB_P3408.


*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 PDATE, internal->external for field FGBDT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_HRTB_P3408-FGBDT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRTB_P3408-FGBDT.
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_HRTB_P3408_STR, 
PERNR TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
TSUBTY TYPE STRING,
GROUPING TYPE STRING,
ROUTE_CODE TYPE STRING,
CLASS TYPE STRING,
FREQ TYPE STRING,
EETCKT TYPE STRING,
DEPTCKT1 TYPE STRING,
TREFN TYPE STRING,
SUBTY TYPE STRING,
SELECTED TYPE STRING,
NAME TYPE STRING,
DEPTCKT TYPE STRING,
TKTID TYPE STRING,
FGBDT TYPE STRING,
ELEDT TYPE STRING,
DEPID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRTB_P3408_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_HRTB_P3408_STR-PERNR sy-vline 
WA_HRTB_P3408_STR-BEGDA sy-vline 
WA_HRTB_P3408_STR-ENDDA sy-vline 
WA_HRTB_P3408_STR-TSUBTY sy-vline 
WA_HRTB_P3408_STR-GROUPING sy-vline 
WA_HRTB_P3408_STR-ROUTE_CODE sy-vline 
WA_HRTB_P3408_STR-CLASS sy-vline 
WA_HRTB_P3408_STR-FREQ sy-vline 
WA_HRTB_P3408_STR-EETCKT sy-vline 
WA_HRTB_P3408_STR-DEPTCKT1 sy-vline 
WA_HRTB_P3408_STR-TREFN sy-vline 
WA_HRTB_P3408_STR-SUBTY sy-vline 
WA_HRTB_P3408_STR-SELECTED sy-vline 
WA_HRTB_P3408_STR-NAME sy-vline 
WA_HRTB_P3408_STR-DEPTCKT sy-vline 
WA_HRTB_P3408_STR-TKTID sy-vline 
WA_HRTB_P3408_STR-FGBDT sy-vline 
WA_HRTB_P3408_STR-ELEDT sy-vline 
WA_HRTB_P3408_STR-DEPID sy-vline      INTO ld_text SEPARATED BY SPACE.

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