ABAP Select data from SAP table ANST_TRACES_TRACE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ANST_TRACES_TRACE
*  INTO TABLE @DATA(IT_ANST_TRACES_TRACE2).
*--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_ANST_TRACES_TRACE INDEX 1 INTO DATA(WA_ANST_TRACES_TRACE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ANST_TRACES_TRACE>-GUID = 1.
<ANST_TRACES_TRACE>-POS = 1.
<ANST_TRACES_TRACE>-PGMID = 1.
<ANST_TRACES_TRACE>-OBJECT = 1.
<ANST_TRACES_TRACE>-OBJ_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ANST_TRACES_TRACE-OBJ_DATE, sy-vline,
  WA_ANST_TRACES_TRACE-OBJ_SOURCE, sy-vline,
  WA_ANST_TRACES_TRACE-OBJ_CLASS_TYPE, sy-vline,
  WA_ANST_TRACES_TRACE-OBJ_CLASS_VALUE, sy-vline,
  WA_ANST_TRACES_TRACE-DEVCLASS, sy-vline,
  WA_ANST_TRACES_TRACE-DLVUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ANST_TRACES_TRACE 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_ANST_TRACES_TRACE 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_ANST_TRACES_TRACE INTO WA_ANST_TRACES_TRACE.


*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_ANST_TRACES_TRACE_STR, 
GUID TYPE STRING,
POS TYPE STRING,
PGMID TYPE STRING,
OBJECT TYPE STRING,
OBJ_NAME TYPE STRING,
OBJ_DATE TYPE STRING,
OBJ_SOURCE TYPE STRING,
OBJ_CLASS_TYPE TYPE STRING,
OBJ_CLASS_VALUE TYPE STRING,
DEVCLASS TYPE STRING,
DLVUNIT TYPE STRING,
VERSOBJTYP TYPE STRING,
VERSOBJNAM TYPE STRING,
VERSNO TYPE STRING,
VERSKORRNO TYPE STRING,
APPLCOMP TYPE STRING,
APPLCOMP1 TYPE STRING,
NAME TYPE STRING,
NAME1 TYPE STRING,
COUNT_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ANST_TRACES_TRACE_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_ANST_TRACES_TRACE_STR-GUID sy-vline 
WA_ANST_TRACES_TRACE_STR-POS sy-vline 
WA_ANST_TRACES_TRACE_STR-PGMID sy-vline 
WA_ANST_TRACES_TRACE_STR-OBJECT sy-vline 
WA_ANST_TRACES_TRACE_STR-OBJ_NAME sy-vline 
WA_ANST_TRACES_TRACE_STR-OBJ_DATE sy-vline 
WA_ANST_TRACES_TRACE_STR-OBJ_SOURCE sy-vline 
WA_ANST_TRACES_TRACE_STR-OBJ_CLASS_TYPE sy-vline 
WA_ANST_TRACES_TRACE_STR-OBJ_CLASS_VALUE sy-vline 
WA_ANST_TRACES_TRACE_STR-DEVCLASS sy-vline 
WA_ANST_TRACES_TRACE_STR-DLVUNIT sy-vline 
WA_ANST_TRACES_TRACE_STR-VERSOBJTYP sy-vline 
WA_ANST_TRACES_TRACE_STR-VERSOBJNAM sy-vline 
WA_ANST_TRACES_TRACE_STR-VERSNO sy-vline 
WA_ANST_TRACES_TRACE_STR-VERSKORRNO sy-vline 
WA_ANST_TRACES_TRACE_STR-APPLCOMP sy-vline 
WA_ANST_TRACES_TRACE_STR-APPLCOMP1 sy-vline 
WA_ANST_TRACES_TRACE_STR-NAME sy-vline 
WA_ANST_TRACES_TRACE_STR-NAME1 sy-vline 
WA_ANST_TRACES_TRACE_STR-COUNT_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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