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日期:2025-10-02
3 Nov 2004 ... The CAST() function takes an expression of any type and produces a result value
of a specified type, ......
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The CAST() function takes a value of one type and produce a value of another
type, similar to CONVERT() . See the ......
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The CAST() function takes an expression of any type and produces a result value
of a specified type, similar to ......
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Note that in some contexts, if you cast an indexed column to BINARY , MySQL is
not able to use the index efficiently....
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You may also use CAST() to convert a string to a different character set. The
syntax is: CAST( character_string AS ......
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You may also use CAST() to convert a string to a different character set. The
syntax is: CAST( character_string AS ......
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日期:2025-09-29
It is also possible to convert a number to a string explicitly using the CAST()
function. Conversion occurs implicitly with ......
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2012年6月3日 ... MySQL 的CAST()和CONVERT()函数可用来获取一个类型的值,并产生另一个类型
的值。两者具体的语法 ......