ABAP Select data from SAP table TRBLHDPRT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRBLHDPRT
*  INTO TABLE @DATA(IT_TRBLHDPRT2).
*--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_TRBLHDPRT INDEX 1 INTO DATA(WA_TRBLHDPRT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRBLHDPRT>-FILE_VERS = 1.
<TRBLHDPRT>-BLOCKSIZE = 1.
<TRBLHDPRT>-RECCOUNT = 1.
<TRBLHDPRT>-STARTTIME1 = 1.
<TRBLHDPRT>-STARTTIME2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRBLHDPRT-ENDTIME1, sy-vline,
  WA_TRBLHDPRT-ENDTIME2, sy-vline,
  WA_TRBLHDPRT-WPID, sy-vline,
  WA_TRBLHDPRT-PID, sy-vline,
  WA_TRBLHDPRT-BLOCKTYPE, sy-vline,
  WA_TRBLHDPRT-FIRSTBLOCK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRBLHDPRT 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_TRBLHDPRT 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_TRBLHDPRT INTO WA_TRBLHDPRT.


*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_TRBLHDPRT_STR, 
FILE_VERS TYPE STRING,
BLOCKSIZE TYPE STRING,
RECCOUNT TYPE STRING,
STARTTIME1 TYPE STRING,
STARTTIME2 TYPE STRING,
ENDTIME1 TYPE STRING,
ENDTIME2 TYPE STRING,
WPID TYPE STRING,
PID TYPE STRING,
BLOCKTYPE TYPE STRING,
FIRSTBLOCK TYPE STRING,
LASTBLOCK TYPE STRING,
CLIENT TYPE STRING,
USERNAME TYPE STRING,
TRANS_ID TYPE STRING,
TCODE TYPE STRING,
PREV_BLOCK TYPE STRING,
NEXT_BLOCK TYPE STRING,
EPP_ROOT_ID TYPE STRING,
EPP_CONNECTION_ID TYPE STRING,
EPP_CONNECTION_COUNTER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRBLHDPRT_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_TRBLHDPRT_STR-FILE_VERS sy-vline 
WA_TRBLHDPRT_STR-BLOCKSIZE sy-vline 
WA_TRBLHDPRT_STR-RECCOUNT sy-vline 
WA_TRBLHDPRT_STR-STARTTIME1 sy-vline 
WA_TRBLHDPRT_STR-STARTTIME2 sy-vline 
WA_TRBLHDPRT_STR-ENDTIME1 sy-vline 
WA_TRBLHDPRT_STR-ENDTIME2 sy-vline 
WA_TRBLHDPRT_STR-WPID sy-vline 
WA_TRBLHDPRT_STR-PID sy-vline 
WA_TRBLHDPRT_STR-BLOCKTYPE sy-vline 
WA_TRBLHDPRT_STR-FIRSTBLOCK sy-vline 
WA_TRBLHDPRT_STR-LASTBLOCK sy-vline 
WA_TRBLHDPRT_STR-CLIENT sy-vline 
WA_TRBLHDPRT_STR-USERNAME sy-vline 
WA_TRBLHDPRT_STR-TRANS_ID sy-vline 
WA_TRBLHDPRT_STR-TCODE sy-vline 
WA_TRBLHDPRT_STR-PREV_BLOCK sy-vline 
WA_TRBLHDPRT_STR-NEXT_BLOCK sy-vline 
WA_TRBLHDPRT_STR-EPP_ROOT_ID sy-vline 
WA_TRBLHDPRT_STR-EPP_CONNECTION_ID sy-vline 
WA_TRBLHDPRT_STR-EPP_CONNECTION_COUNTER sy-vline      INTO ld_text SEPARATED BY SPACE.

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