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PostgreSQL/Math Functions/PI - История изменений
2026-04-04T11:32:13Z
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в 13:45, 26 мая 2010
2010-05-26T13:45:56Z
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Admin: 1 версия
2010-05-26T10:14:17Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>==pi() constant==<br />
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<!-- start source code --><br />
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<source lang="sql"><br />
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postgres=# -- pi() constant<br />
postgres=# select pi();<br />
pi<br />
------------------<br />
3.14159265358979<br />
(1 row)<br />
postgres=#<br />
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</source><br />
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==pi(): Returns the pi constant (3.14159...)==<br />
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<!-- start source code --><br />
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<source lang="sql"><br />
postgres=# -- pi(): Returns the pi constant (3.14159...)<br />
postgres=#<br />
postgres=# SELECT pi() AS "the pi constant";<br />
the pi constant<br />
------------------<br />
3.14159265358979<br />
(1 row)<br />
postgres=#<br />
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</source><br />
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==Use pi() in calculation==<br />
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<!-- start source code --><br />
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<source lang="sql"><br />
postgres=#<br />
postgres=# SELECT 2 + 2 AS "2 plus 2", pi() AS "the pi function", "PostgreSQL is more than a calculator!" AS comments;<br />
2 plus 2 | the pi function | comments<br />
----------+------------------+---------------------------------------<br />
4 | 3.14159265358979 | PostgreSQL is more than a calculator!<br />
(1 row)<br />
postgres=#<br />
postgres=#<br />
<br />
</source></div>
Admin