\timing

If set to on, returns how long (in milliseconds) each SQL statement runs. Results include:

  • Length of time required to fetch the first block of rows
  • Total time until the last block is formatted.

Unqualified, \timing toggles timing on and off. You can explicitly turn timing on and off by qualifying the command with options ON and OFF, respectively.

You can also enable \timing from the command line using the vsql -i command.

Syntax

\timing [ON | OFF]

Examples

The following unqualified \timing commands toggle timing on and off:

=> \timing
Timing is on
=> \timing
Timing is off

The following example shows a SQL command with timing on:

=> \timing
Timing is on.
=> SELECT user_name, ssl_state, authentication_method, client_authentication_name,
     client_type FROM sessions WHERE session_id=(SELECT session_id FROM current_session);
 user_name | ssl_state | authentication_method | client_authentication_name | client_type
-----------+-----------+-----------------------+----------------------------+-------------
 dbadmin   | None      | ImpTrust              | default: Implicit Trust    | vsql
(1 row)

Time: First fetch (1 row): 73.684 ms. All rows formatted: 73.770 ms