ABAP Select data from SAP table TRBAT3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TRBAT3 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 TRBAT3. 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 TRBAT3 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_TRBAT3 TYPE STANDARD TABLE OF TRBAT3,
      WA_TRBAT3 TYPE TRBAT3,
      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: <TRBAT3> TYPE TRBAT3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TRBAT3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TRBAT3
  INTO TABLE IT_TRBAT3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRBAT3
*  INTO TABLE @DATA(IT_TRBAT32).
*--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_TRBAT3 INDEX 1 INTO DATA(WA_TRBAT32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TRBAT3 ASSIGNING <TRBAT3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRBAT3>-FUNCTION = 1.
<TRBAT3>-TRKORR = 1.
<TRBAT3>-AS4POS_FRM = 1.
<TRBAT3>-AS4POS_TO = 1.
<TRBAT3>-STATUS = 1.

ENDLOOP.

LOOP AT IT_TRBAT3 INTO WA_TRBAT3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRBAT3-RETCODE, sy-vline,
  WA_TRBAT3-TIMESTMP, sy-vline,
  WA_TRBAT3-LOGNAME, sy-vline,
  WA_TRBAT3-PID, sy-vline,
  WA_TRBAT3-CLIDEPDT, sy-vline,
  WA_TRBAT3-CLIINDEPDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRBAT3 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_TRBAT3 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_TRBAT3 INTO WA_TRBAT3.


*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_TRBAT3_STR, 
FUNCTION TYPE STRING,
TRKORR TYPE STRING,
AS4POS_FRM TYPE STRING,
AS4POS_TO TYPE STRING,
STATUS TYPE STRING,
RETCODE TYPE STRING,
TIMESTMP TYPE STRING,
LOGNAME TYPE STRING,
PID TYPE STRING,
CLIDEPDT TYPE STRING,
CLIINDEPDT TYPE STRING,
MODIFIED TYPE STRING,
HOSTNAME TYPE STRING,
ERROR_CNT TYPE STRING,
WARN_CNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRBAT3_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_TRBAT3_STR-FUNCTION sy-vline 
WA_TRBAT3_STR-TRKORR sy-vline 
WA_TRBAT3_STR-AS4POS_FRM sy-vline 
WA_TRBAT3_STR-AS4POS_TO sy-vline 
WA_TRBAT3_STR-STATUS sy-vline 
WA_TRBAT3_STR-RETCODE sy-vline 
WA_TRBAT3_STR-TIMESTMP sy-vline 
WA_TRBAT3_STR-LOGNAME sy-vline 
WA_TRBAT3_STR-PID sy-vline 
WA_TRBAT3_STR-CLIDEPDT sy-vline 
WA_TRBAT3_STR-CLIINDEPDT sy-vline 
WA_TRBAT3_STR-MODIFIED sy-vline 
WA_TRBAT3_STR-HOSTNAME sy-vline 
WA_TRBAT3_STR-ERROR_CNT sy-vline 
WA_TRBAT3_STR-WARN_CNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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