mysql hash数

MySQL中的hash函数主要用于数据分区和加密。在数据分区中，可以使用hash函数将数据分配到不同的分区中，以实现数据的均匀分布和查询的高效性。对于加密，MySQL提供了两种hash加密方式：MYSQL323和MYSQLSHA1。MYSQL323是在MYSQL4.1之前的版本中使用的加密方式，生成的hash值为16位。MYSQLSHA1是在MYSQL4.1及之后的版本中使用的加密方式，生成的hash值为40位。\[1\]\[2\]\[3\]
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