The default is the forward-only cursor.

默认情况下使用只能前进的游标。

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The simplest type of cursor is the firehose, or forward-only cursor.

游标的最简单类型是流水型(firehose)或仅向前型游标。

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In terms of performance, the forward-only cursor is better than the scrollable cursor.

而在性能方面，只能前进的游标优于可滚动游标。

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This dramatic difference is due to the light-weight forward-only cursor that is the default in PDO.

之所以有这么大的差异，是因为在PD o中默认的游标是轻量级的只能向前移动的游标。

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For a fast, forward-only cursor through the results, use an IfxDataReader returned by the ExecuteReader method.

对于快速的、只向前通过结果的游标，可以使用由executereader方法返回的IfxDataReader。

youdao

For a fast, forward-only cursor through the results, use an IfxDataReader returned by the ExecuteReader method.

对于快速的、只向前通过结果的游标，可以使用由executereader方法返回的IfxDataReader。

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