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35 lines
817 B
Markdown
35 lines
817 B
Markdown
# Sleeping
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Generally you want your SQL statements to run against your database as
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quickly as possible. For those times when you are doing some sort of
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debugging or just want your queries to look very computationally expensive,
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PostgreSQL offers the `pg_sleep` function.
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To sleep for 5 seconds, try the following:
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```sql
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> select now(); select pg_sleep(5); select now();
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now
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-------------------------------
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2016-01-08 16:30:21.251081-06
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(1 row)
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Time: 0.274 ms
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pg_sleep
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----------
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(1 row)
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Time: 5001.459 ms
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now
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-------------------------------
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2016-01-08 16:30:26.252953-06
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(1 row)
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Time: 0.260 ms
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```
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As you'll notice, the `pg_sleep` statement took about 5 seconds.
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[source](http://www.if-not-true-then-false.com/2010/postgresql-sleep-function-pg_sleep-postgres-delay-execution/)
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