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Oracle执行SQL查询语句的步骤

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Release: 2016-06-07 16:44:29
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Oracle处理查询语句分为3大阶段:编译(parse)、执行(execute)、提起数据(fetch)。

Oracle执行SQL查询语句的步骤

查询语句和其他语句不同,如果查询语句执行成功,会返回查询结果,,而其他类型的SQL语句只是返回执行成功或者失败的信息。

 

Oracle处理查询语句分为3大阶段:编译(parse)、执行(execute)、提起数据(fetch)。

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