ABAP Select data from SAP table ATRA_STR_TRACE_PARAMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ATRA_STR_TRACE_PARAMS
*  INTO TABLE @DATA(IT_ATRA_STR_TRACE_PARAMS2).
*--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_ATRA_STR_TRACE_PARAMS INDEX 1 INTO DATA(WA_ATRA_STR_TRACE_PARAMS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ATRA_STR_TRACE_PARAMS>-VARIANT_NAME = 1.
<ATRA_STR_TRACE_PARAMS>-VARIANT_OWNER = 1.
<ATRA_STR_TRACE_PARAMS>-MAX_FILE_SIZE = 1.
<ATRA_STR_TRACE_PARAMS>-MAX_DURATION = 1.
<ATRA_STR_TRACE_PARAMS>-AGGREGATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ATRA_STR_TRACE_PARAMS-AGGREGATION_KIND, sy-vline,
  WA_ATRA_STR_TRACE_PARAMS-CHECK_MEMORY, sy-vline,
  WA_ATRA_STR_TRACE_PARAMS-ON_OFF, sy-vline,
  WA_ATRA_STR_TRACE_PARAMS-SERVER_TRACE, sy-vline,
  WA_ATRA_STR_TRACE_PARAMS-STATISTICS, sy-vline,
  WA_ATRA_STR_TRACE_PARAMS-METHOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ATRA_STR_TRACE_PARAMS 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_ATRA_STR_TRACE_PARAMS 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_ATRA_STR_TRACE_PARAMS INTO WA_ATRA_STR_TRACE_PARAMS.


*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_ATRA_STR_TRACE_PARAMS_STR, 
VARIANT_NAME TYPE STRING,
VARIANT_OWNER TYPE STRING,
MAX_FILE_SIZE TYPE STRING,
MAX_DURATION TYPE STRING,
AGGREGATION TYPE STRING,
AGGREGATION_KIND TYPE STRING,
CHECK_MEMORY TYPE STRING,
ON_OFF TYPE STRING,
SERVER_TRACE TYPE STRING,
STATISTICS TYPE STRING,
METHOD TYPE STRING,
EVENTS TYPE STRING,
FORMS TYPE STRING,
MODULES TYPE STRING,
FUNCTIONS TYPE STRING,
DYNPRO_HANDLING TYPE STRING,
FRONTEND_DIAG TYPE STRING,
C_CALLS TYPE STRING,
SQL_OPEN TYPE STRING,
SQL_NATIVE TYPE STRING,
CONTEXTS TYPE STRING,
CMD_GENERATE TYPE STRING,
CMD_LOAD TYPE STRING,
ITAB_READ TYPE STRING,
ITAB_MODIFICATION TYPE STRING,
MESSAGES TYPE STRING,
DB_OPERATIONS TYPE STRING,
CMD_EXPORT_IMPORT TYPE STRING,
CMD_MIX TYPE STRING,
CMD_DATASET TYPE STRING,
KERNEL_RUNT TYPE STRING,
DESCRIPTION TYPE STRING,
AMDP_TRACE TYPE STRING,
AMDP_PATTERN_TAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ATRA_STR_TRACE_PARAMS_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_ATRA_STR_TRACE_PARAMS_STR-VARIANT_NAME sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-VARIANT_OWNER sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-MAX_FILE_SIZE sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-MAX_DURATION sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-AGGREGATION sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-AGGREGATION_KIND sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-CHECK_MEMORY sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-ON_OFF sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-SERVER_TRACE sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-STATISTICS sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-METHOD sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-EVENTS sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-FORMS sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-MODULES sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-FUNCTIONS sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-DYNPRO_HANDLING sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-FRONTEND_DIAG sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-C_CALLS sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-SQL_OPEN sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-SQL_NATIVE sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-CONTEXTS sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-CMD_GENERATE sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-CMD_LOAD sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-ITAB_READ sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-ITAB_MODIFICATION sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-MESSAGES sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-DB_OPERATIONS sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-CMD_EXPORT_IMPORT sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-CMD_MIX sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-CMD_DATASET sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-KERNEL_RUNT sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-DESCRIPTION sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-AMDP_TRACE sy-vline 
WA_ATRA_STR_TRACE_PARAMS_STR-AMDP_PATTERN_TAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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