ABAP Select data from SAP table GORASESSION into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP GORASESSION 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. 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 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 TYPE STANDARD TABLE OF GORASESSION,
      WA_GORASESSION TYPE GORASESSION,
      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> TYPE GORASESSION.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GORASESSION
*  INTO TABLE @DATA(IT_GORASESSION2).
*--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 INDEX 1 INTO DATA(WA_GORASESSION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GORASESSION>-INST_ID = 1.
<GORASESSION>-SID = 1.
<GORASESSION>-PADDR = 1.
<GORASESSION>-USERNAME = 1.
<GORASESSION>-SQL_ADDRESS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GORASESSION-SQL_HASH_VALUE, sy-vline,
  WA_GORASESSION-SQL_CHILD_NUMBER, sy-vline,
  WA_GORASESSION-CLIENT_INFO, sy-vline,
  WA_GORASESSION-CLIENT_IDENTIFIER, sy-vline,
  WA_GORASESSION-SPID, sy-vline,
  WA_GORASESSION-PROCPROG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GORASESSION 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 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 INTO WA_GORASESSION.


*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_STR, 
INST_ID TYPE STRING,
SID TYPE STRING,
PADDR TYPE STRING,
USERNAME TYPE STRING,
SQL_ADDRESS TYPE STRING,
SQL_HASH_VALUE TYPE STRING,
SQL_CHILD_NUMBER TYPE STRING,
CLIENT_INFO TYPE STRING,
CLIENT_IDENTIFIER TYPE STRING,
SPID TYPE STRING,
PROCPROG TYPE STRING,
PROCESS TYPE STRING,
MACHINE TYPE STRING,
SESSPROG TYPE STRING,
COMMAND TYPE STRING,
STATUS TYPE STRING,
TYPE TYPE STRING,
EVENT TYPE STRING,
WAIT_TIME TYPE STRING,
SECONDS_IN_WAIT TYPE STRING,
SESS_IO TYPE STRING,
BLOCK_GETS TYPE STRING,
CONSISTENT_GETS TYPE STRING,
LOGICAL_READS TYPE STRING,
PHYSICAL_READS TYPE STRING,
BLOCK_CHANGES TYPE STRING,
CONSISTENT_CHANGES TYPE STRING,
SQL_TEXT_TAB TYPE STRING,
P1TEXT TYPE STRING,
P1 TYPE STRING,
P2TEXT TYPE STRING,
P2 TYPE STRING,
P3TEXT TYPE STRING,
P3 TYPE STRING,
MODULE TYPE STRING,
ACTION TYPE STRING,
PGA_USED_MEM TYPE STRING,
PGA_ALLOC_MEM TYPE STRING,
PGA_FREEABLE_MEM TYPE STRING,
PGA_MAX_MEM TYPE STRING,
ROW_WAIT_OBJ TYPE STRING,
ROW_WAIT_FILE TYPE STRING,
ROW_WAIT_BLOCK TYPE STRING,
ROW_WAIT_ROW TYPE STRING,
WAIT_CLASS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GORASESSION_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_STR-INST_ID sy-vline 
WA_GORASESSION_STR-SID sy-vline 
WA_GORASESSION_STR-PADDR sy-vline 
WA_GORASESSION_STR-USERNAME sy-vline 
WA_GORASESSION_STR-SQL_ADDRESS sy-vline 
WA_GORASESSION_STR-SQL_HASH_VALUE sy-vline 
WA_GORASESSION_STR-SQL_CHILD_NUMBER sy-vline 
WA_GORASESSION_STR-CLIENT_INFO sy-vline 
WA_GORASESSION_STR-CLIENT_IDENTIFIER sy-vline 
WA_GORASESSION_STR-SPID sy-vline 
WA_GORASESSION_STR-PROCPROG sy-vline 
WA_GORASESSION_STR-PROCESS sy-vline 
WA_GORASESSION_STR-MACHINE sy-vline 
WA_GORASESSION_STR-SESSPROG sy-vline 
WA_GORASESSION_STR-COMMAND sy-vline 
WA_GORASESSION_STR-STATUS sy-vline 
WA_GORASESSION_STR-TYPE sy-vline 
WA_GORASESSION_STR-EVENT sy-vline 
WA_GORASESSION_STR-WAIT_TIME sy-vline 
WA_GORASESSION_STR-SECONDS_IN_WAIT sy-vline 
WA_GORASESSION_STR-SESS_IO sy-vline 
WA_GORASESSION_STR-BLOCK_GETS sy-vline 
WA_GORASESSION_STR-CONSISTENT_GETS sy-vline 
WA_GORASESSION_STR-LOGICAL_READS sy-vline 
WA_GORASESSION_STR-PHYSICAL_READS sy-vline 
WA_GORASESSION_STR-BLOCK_CHANGES sy-vline 
WA_GORASESSION_STR-CONSISTENT_CHANGES sy-vline 
WA_GORASESSION_STR-SQL_TEXT_TAB sy-vline 
WA_GORASESSION_STR-P1TEXT sy-vline 
WA_GORASESSION_STR-P1 sy-vline 
WA_GORASESSION_STR-P2TEXT sy-vline 
WA_GORASESSION_STR-P2 sy-vline 
WA_GORASESSION_STR-P3TEXT sy-vline 
WA_GORASESSION_STR-P3 sy-vline 
WA_GORASESSION_STR-MODULE sy-vline 
WA_GORASESSION_STR-ACTION sy-vline 
WA_GORASESSION_STR-PGA_USED_MEM sy-vline 
WA_GORASESSION_STR-PGA_ALLOC_MEM sy-vline 
WA_GORASESSION_STR-PGA_FREEABLE_MEM sy-vline 
WA_GORASESSION_STR-PGA_MAX_MEM sy-vline 
WA_GORASESSION_STR-ROW_WAIT_OBJ sy-vline 
WA_GORASESSION_STR-ROW_WAIT_FILE sy-vline 
WA_GORASESSION_STR-ROW_WAIT_BLOCK sy-vline 
WA_GORASESSION_STR-ROW_WAIT_ROW sy-vline 
WA_GORASESSION_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.