sqrt(x): Returns the square root of x : sqrt « Math Functions « PostgreSQL

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PostgreSQL » Math Functions » sqrt   sqrt(x): Returns the square root of x postgres=# postgres=# -- sqrt(x): Returns the square root of x postgres=# SELECT sqrt(2.0), sqrt(4.0), postgres-#        sqrt(pow(2.0, 2)) AS inverse_example;        sqrt        |       sqrt        |  inverse_example -------------------+-------------------+--------------------  1.414213562373095 | 2.000000000000000 | 2.0000000000000000 (1 row) postgres=#                     Related examples in the same category

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