ORACLE implicitly repeats the FETCH until all the rows from the cursor are consumed and stores each row in an element of the array.
ORACLE隐式重复FETCH,直到使用了来自游标的所有行并将每一行存储在阵列的一个元素中。
From here on out, until the cache expires, you will be able to fetch the result array directly out of cache, skipping over the SQL query.
从这里开始,直到缓存到期,您就能够直接从缓存中获取结果数组,跳过SQL查询。
POP(), for instance, could be implemented as a FETCH() of the last element, followed by STORESIZE(FETCHSIZE()-1) (setting the size of the array to be one less, effectively removing the last element).
例如,可以这样实现POP() :对最后一个元素使用FETCH() ,然后使用STORESIZE(FETCHSIZE()-1) (将数组的大小减去 1,实际除去了最后一个元素)。
Similarly, when a FETCH statement includes the BULK COLLECT clause, the variable used in the FETCH must be an array.
同样,FETCH语句包括BULKCOLLECT子句时,用于 FETCH的变量必须是阵列。
There are many ways to fetch data from a server, but the interesting cases here are: XHR, iframe and script-tags. Without knowledge of the JSON/Array hack it's easy to reason like this
有很多种从一个服务器获得数据的方法,但这其中比较有趣的是XHR、iframe、脚本标签。
How do fetch specific value from the array of data?
如何获取特定的值从数据阵列?
In that case there is no need to re-fetch the entities, simply use the object from the appropriate index in your data source array or your fetched results controller.
在这种情况下,不需要重新获取实体,只需使用数据源数组或获取结果控制器中相应索引的对象。
In that case there is no need to re-fetch the entities, simply use the object from the appropriate index in your data source array or your fetched results controller.
在这种情况下,不需要重新获取实体,只需使用数据源数组或获取结果控制器中相应索引的对象。
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