You need to at least have Tomcat 4.1.x with its full distribution.
您的Tomcat至少需要是 4.1.x 版本(包含全部发布内容)。
Since the queries are dynamic, with unknown selection criteria at compile time, plan generation can be incorrect, even with the availability of full distribution statistics on the data.
由于查询是动态的,在编译时并不知道其选择标准,因此,即使有了关于数据的完整的分布统计,仍然可能生成错误的计划。
Since the queries are dynamic, with unknown selection criteria at compile time, plan generation can be incorrect, even with the availability of full distribution statistics on the data.
由于查询是动态的,在编译时并不知道其选择标准,因此,即使有了关于数据的完整的分布统计,仍然可能生成错误的计划。
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