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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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日期:2025-10-02
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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日期:2025-09-30
The CAST() function takes an expression of any type and produces a result value of a specified type, similar to ......
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日期:2025-09-27
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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日期:2025-09-28
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:2025-09-27
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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日期:2025-10-02
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 ......