ZoneMapIndex:存放ZoneMap索引的meta信息,内容包括了最大值、最小值、是否有空值、是否没有非空值。SegmentZoneMap存放了全局的ZoneMap信息,PageZoneMaps则存放了每个页面的统计信息。 BitMapIndex:存放BitMap索引的meta信息,内容包括了BitMap类型,字典数据BitMap数据。 BloomFilterIndex:存放了BloomFilter索引信息。Ordinal ...
Doris Visits films port guides, lists cruise ships with global positioning, has world port menus with weather status, excursions & maps.
ZoneMapIndex:存放ZoneMap索引的meta信息,内容包括了最大值、最小值、是否有空值、是否没有非空值。SegmentZoneMap存放了全局的ZoneMap信息,PageZoneMaps则存放了每个页面的统计信息。 BitMapIndex:存放BitMap索引的meta信息,内容包括了BitMap类型,字典数据BitMap数据。 BloomFilterIndex:存放了BloomFilter索引信息。 Ordinal...
The bottom layer of the materialized view is similar to the concept of Cube and the precomputation process. As a way of exchanging space for time, special tables are generated at the bottom layer. In the query, materialized view maps to the tables and responds quickly....
The ES Catalog now maps ES NESTED or OBJECT types to the Doris JSON type.#37101 By default, support_phrase is enabled for inverted indexes with specified analyzers to improve the performance of match_phrase series queries. #37949Query OptimizerSupport...
<one-to-many class="Cat"/> </set> <subclass name="DomesticCat" discriminator-value="D"> <property name="name" type="string"/> </subclass> </class> <class name="Dog"> <!-- mapping for Dog could go here --> </class>
由于每个连接请求都被封装成一个 ConnectContext 对象,因此在连接调度器维护了mapprivate final Map<Integer, ConnectContext> connectionMap = Maps.newConcurrentMap()用于保存ConnectionId和ConnectContext 对象的映射关系,private final Map<String, AtomicInteger> connByUser = Maps.newConcurrentMap()则是用于维护用户...
- Map<String, String> fieldtoType = Maps.newHashMap(); - - StringBuilder queryBuf = new StringBuilder("SHOW FULL COLUMNS FROM "); - queryBuf.append(tableName); - queryBuf.append(" FROM "); - queryBuf.append(dbName); - try (Statement stmt = conn.createStatement()) { ...
bitmap index can help reduce the query response time to less than one second.** + +```SQL +with t_user as ( + select + u_id, + name + from db.user + where partition_id = 1 + and name like '%Thomas%' +), + + t_tags as ( ...
“My life has been a series of moments, each one a journey toward the end. Now is the time to let them all go.” A celebration of life service is planned; details will be posted later here on dorismaranda.com. Donations in lieu of flowers can be made toWAVAW. ...