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Editorial Team
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Asked: 2026-05-26T14:30:28+00:00

SELECT ACOS(31.552278760192) when executed in MSSQL Server it returns some value but when executed

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 SELECT ACOS(31.552278760192)

when executed in MSSQL Server it returns some value but when executed in MYSQL it returns null.

Any kind of help is appreciated.

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1 Answer

  1. Editorial Team

    From the fine manual:

    ACOS(X)
    Returns the arc cosine of X, that is, the value whose cosine is X. Returns NULL if X is not in the range -1 to 1.

    So 31.552278760192 is out of range for MySQL’s ACOS. In fact, the arccosine function doesn’t produce a real number as a result outside of [-1,1] and acos(31.552278760192) is ~4i.

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