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本来帮同事写的 结果她没有用xmltype用clob了
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You cannot insert more than 4000 chars directly into a CLOB field. You will need to create a procedure to do the insertion and call it. Plus you cannot insert more than 32000 chars at one time... this is a PL/SQL limitation.
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Oracle的物化视图提供了强大的功能,可以用于预先计算并保存表连接或聚集等耗时较多的操作的结果,这样,在执行查询时,就可以避免进行这些耗时的操作,而从快速的得到结果。
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Oracle supports partitioning only for tables, indexes on tables, materialized views, and indexes on materialized views. Oracle does not support partitioning of clustered tables or indexes on clustered tables.
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