在满足筛选器条件的每个行中，数据库服务器将对键应用哈希函数，并探测哈希表以查找匹配的键值。
For each row that satisfies the filter condition, the database server applies hash function to the key and proves the hash table to find a match.
要写出一个完美的哈希函数是很困难的，特别是要处理哈希表中的冲突。
Perfecting hashing is difficult and to deal with that hashtable implementations support collision resolution.
目前我们讨论的Vimscript基本特性(语句和函数，数组和哈希表)已经足够为Vim的核心特性集创建几乎任何类型的添加项。
The basic features of Vimscript covered so far (statements and functions, arrays, and hashes) are sufficient to create almost any kind of addition to Vim's core feature set.
这会带来一个新的可调用的函数serialize，该函数获取表单内的所有输入字段并创建这些字段的名称和值的哈希表。
This gives a new function to call, the serialize function, which gets all the input fields in the form and creates a hash of their names and values.
可以在概念上将哈希表认为是一系列的 bucket，每个 bucket 所拥有的地址是通过应用哈希函数从键值导出的。
You can think of a hash table conceptually as a series of buckets, each with an address that is derived form the key value by applying the hash function.
然后，第二个表被扫描，只扫描一次，那个函数引导我们到哈希表中适合的位置，并且从那里，你找到匹配的行指针。
Then the second table is scanned, only once, the function directs us to the proper slot in the hash table and from there you find the pointers to the matching rows.
哈希函数：哈希表使用的一种函数，能计算出一个键的位置。
A function used by a hashtable to compute the location for a key.
另外要注意的是，这些代码在你的环境中是无法工作的，因为我在PHP源码中添加了一些表掩码和哈希函数相关的代码。
Also note that the given PHP code won't work for you as I added special functions exporting the table mask and hash function to mz version of PHP.
当在派生类中被重写时，用作指定对象的哈希算法和数据结构(如哈希表)的哈希函数。
When overridden in a derived class, serves as a hash function for the specified object for hashing algorithms and data structures, such as a hash table.
用作特定类型的哈希函数，适合在哈希算法和数据结构(如哈希表)中使用。
Serves as a hash function for a particular type, suitable for use in hashing algorithms and data structures such as a hash table.
用作特定类型的哈希函数，适合在哈希算法和数据结构(如哈希表)中使用。
Serves as a hash function for a particular type, suitable for use in hashing algorithms and data structures such as a hash table.
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