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公开(公告)号：EP3814938A1
公开(公告)日：2021-05-05
申请号：EP19737452.3
申请日：2019-06-25
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公开(公告)号：EP1759315A1
公开(公告)日：2007-03-07
申请号：EP05760442.3
申请日：2005-06-09
发明人： LIU, Zhen, Hua , KRISHNAPRASAD, Muralidhar , MANIKUTTY, Anand , WARNER, James , ZHANG, Hui X. , ARORA, Vikas , KOTSOVOLOS, Susan M.
IPC分类号： G06F17/30
CPC分类号： G06F17/30917 , G06F17/30932
摘要： Techniques are provided for processing a query including receiving the query, where the query specifies certain operations; determining that the query includes a first portion in a first query language and a second portion in a second query language; generating a first in-memory representation for the first portion; generating a second in-memory representation for the second portion; generating a third in-memory representation of the query based on the first in-memory representation and the second in-memory representation; and performing the certain operations based on the third in-memory representation.
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3.发明公开
公开(公告)号：EP3903205A1
公开(公告)日：2021-11-03
申请号：EP19839228.4
申请日：2019-12-18
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公开(公告)号：EP3839759A1
公开(公告)日：2021-06-23
申请号：EP21155653.5
申请日：2018-05-24
发明人： LIU, Zhen , HAMMERSCHMIDT, Beda , KRISHNAMURTHY, Sriram , LU, Ying , MCMAHON, Douglas , TATA, Srividya , ARORA, Vikas
IPC分类号： G06F16/22 , G06F16/27 , G06F16/2458 , G06F16/84
摘要： Techniques are described herein for leveraging and extending relational data sharding infrastructure to provide comprehensive support for sharding semi-structured and unstructured data, in addition to the relational data, in a single sharded database system. Specifically, techniques are described in which a catalog server pre-gathers all data it needs to answer fetches from a dynamically created temporary lob. In addition, techniques are provided in which a catalog server encodes shard identifiers in lob locators sent to the client. Techniques are provided for pushing down various operators to shard servers.
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公开(公告)号：EP3688550A1
公开(公告)日：2020-08-05
申请号：EP18732532.9
申请日：2018-05-24
发明人： LIU, Zhen , HAMMERSCHMIDT, Beda , KRISHNAMURTHY, Sriram , LU, Ying , MCMAHON, Douglas , TATA, Srividya , ARORA, Vikas
IPC分类号： G06F20060101
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公开(公告)号：EP1759315B1
公开(公告)日：2010-06-30
申请号：EP05760442.3
申请日：2005-06-09
发明人： LIU, Zhen, Hua , KRISHNAPRASAD, Muralidhar , MANIKUTTY, Anand , WARNER, James , ZHANG, Hui X. , ARORA, Vikas , KOTSOVOLOS, Susan M.
IPC分类号： G06F17/30
CPC分类号： G06F17/30917 , G06F17/30932
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