ABAP Select data from SAP table GORASESSION_DBC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GORASESSION_DBC
*  INTO TABLE @DATA(IT_GORASESSION_DBC2).
*--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_GORASESSION_DBC INDEX 1 INTO DATA(WA_GORASESSION_DBC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GORASESSION_DBC>-INST_ID = 1.
<GORASESSION_DBC>-SID = 1.
<GORASESSION_DBC>-SPID = 1.
<GORASESSION_DBC>-SAP_INSTANCE = 1.
<GORASESSION_DBC>-MACHINE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GORASESSION_DBC-PROCESS, sy-vline,
  WA_GORASESSION_DBC-STATUS, sy-vline,
  WA_GORASESSION_DBC-EVENT, sy-vline,
  WA_GORASESSION_DBC-SQL_TEXT, sy-vline,
  WA_GORASESSION_DBC-LOGICAL_READS, sy-vline,
  WA_GORASESSION_DBC-PHYS_READS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GORASESSION_DBC 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_GORASESSION_DBC 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_GORASESSION_DBC INTO WA_GORASESSION_DBC.


*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_GORASESSION_DBC_STR, 
INST_ID TYPE STRING,
SID TYPE STRING,
SPID TYPE STRING,
SAP_INSTANCE TYPE STRING,
MACHINE TYPE STRING,
PROCESS TYPE STRING,
STATUS TYPE STRING,
EVENT TYPE STRING,
SQL_TEXT TYPE STRING,
LOGICAL_READS TYPE STRING,
PHYS_READS TYPE STRING,
BLOCK_CHANGES TYPE STRING,
CONSISTENT_CHANGES TYPE STRING,
SECONDS_IN_WAIT TYPE STRING,
WAIT_TIME TYPE STRING,
P1TEXT TYPE STRING,
P1 TYPE STRING,
P2TEXT TYPE STRING,
P2 TYPE STRING,
P3TEXT TYPE STRING,
P3 TYPE STRING,
BLOCK_GETS TYPE STRING,
CONSISTENT_GETS TYPE STRING,
USERNAME TYPE STRING,
PGA_USED_MEM TYPE STRING,
PGA_ALLOC_MEM TYPE STRING,
PGA_FREEABLE_MEM TYPE STRING,
PGA_MAX_MEM TYPE STRING,
CLIENT_INFO TYPE STRING,
CLIENT_IDENTIFIER TYPE STRING,
WAIT_CLASS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GORASESSION_DBC_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_GORASESSION_DBC_STR-INST_ID sy-vline 
WA_GORASESSION_DBC_STR-SID sy-vline 
WA_GORASESSION_DBC_STR-SPID sy-vline 
WA_GORASESSION_DBC_STR-SAP_INSTANCE sy-vline 
WA_GORASESSION_DBC_STR-MACHINE sy-vline 
WA_GORASESSION_DBC_STR-PROCESS sy-vline 
WA_GORASESSION_DBC_STR-STATUS sy-vline 
WA_GORASESSION_DBC_STR-EVENT sy-vline 
WA_GORASESSION_DBC_STR-SQL_TEXT sy-vline 
WA_GORASESSION_DBC_STR-LOGICAL_READS sy-vline 
WA_GORASESSION_DBC_STR-PHYS_READS sy-vline 
WA_GORASESSION_DBC_STR-BLOCK_CHANGES sy-vline 
WA_GORASESSION_DBC_STR-CONSISTENT_CHANGES sy-vline 
WA_GORASESSION_DBC_STR-SECONDS_IN_WAIT sy-vline 
WA_GORASESSION_DBC_STR-WAIT_TIME sy-vline 
WA_GORASESSION_DBC_STR-P1TEXT sy-vline 
WA_GORASESSION_DBC_STR-P1 sy-vline 
WA_GORASESSION_DBC_STR-P2TEXT sy-vline 
WA_GORASESSION_DBC_STR-P2 sy-vline 
WA_GORASESSION_DBC_STR-P3TEXT sy-vline 
WA_GORASESSION_DBC_STR-P3 sy-vline 
WA_GORASESSION_DBC_STR-BLOCK_GETS sy-vline 
WA_GORASESSION_DBC_STR-CONSISTENT_GETS sy-vline 
WA_GORASESSION_DBC_STR-USERNAME sy-vline 
WA_GORASESSION_DBC_STR-PGA_USED_MEM sy-vline 
WA_GORASESSION_DBC_STR-PGA_ALLOC_MEM sy-vline 
WA_GORASESSION_DBC_STR-PGA_FREEABLE_MEM sy-vline 
WA_GORASESSION_DBC_STR-PGA_MAX_MEM sy-vline 
WA_GORASESSION_DBC_STR-CLIENT_INFO sy-vline 
WA_GORASESSION_DBC_STR-CLIENT_IDENTIFIER sy-vline 
WA_GORASESSION_DBC_STR-WAIT_CLASS sy-vline      INTO ld_text SEPARATED BY SPACE.

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