#sparksql模式spark.sql("REFRESH TABLE db.tablename")# dataframe模式spark.Catalog.refreshTable("db.tablename")
REFRESH(MATERIALIZED VIEW 或 STREAMING TABLE) 项目 2024/12/23 本文内容 语法 参数 示例 相关语句 适用于:Databricks SQL 刷新流式处理表或具体化视图的数据。 默认情况下,数据会同步刷新。 可以通过执行DESCRIBE EXTENDED来跟踪刷新状态。 备注 无服务器 Delta Live Tables 管道支持对具体化视图和流式处理表进行的...
当更新了Parquet表时,缓存的元数据信息未更新,导致Spark SQL查询不到新插入的数据作业执行报错,报错信息参考如下: DLI.0002: FileNotFoundException: getFileStatus on error message 该场景下就需要使用REFRESH TABLE来解决该问题。REFRESH TABLE是用于重新整理某个分区的文件,重用之前的表元数据信息,能够检测到表的...
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注:只有设置了启动参数 –load_table_in_background=true 才会异步加载元数据。CM默认会加这个参数,建议大集群中设为false。否则对于大集群可能启动时间非常长,甚至几个小时都启动不完。 3.invalidate的特点 invalidate metadata的特点就是异步性和全量性。但是它涉及到大批量元数据的更改,所以较为消耗资源和时间。
The following table provides a brief description of options for refreshing data that you can select when you configure data connections in Excel. For specific information about how to define connections to external data sources in an Excel workbook, seeConnect to (import) external data...
Processing the table from SQL Server Management Studio (Premium) Only available for semantic models inDirect Lake modewhen usingEdit tableswhenediting a data model in the Power BI service. Keep in mindFor example, if you open a report in the browser, then the scheduled refresh performs a data...
Processing the table from SQL Server Management Studio (Premium) Only available for semantic models inDirect Lake modewhen usingEdit tableswhenediting a data model in the Power BI service. Keep in mindFor example, if you open a report in the browser, then the scheduled refresh performs a data...
$cat rf.sql LOAD DATA INFILE '/tpch_10m_data/delete.1' INTO TABLE delete_orders FIELDS TERMINATED BY '|'; LOAD DATA INFILE '/tpch_10m_data/orders.tbl.u1' INTO TABLE add_orders FIELDS TERMINATED BY '|'; LOAD DATA INFILE '/tpch_10m_data/lineitem.tbl.u1' INTO TABLE add_lineitem FIE...
SQL Copy USE AdventureWorks2022; GO EXECUTE sp_refreshview N'Sales.vIndividualCustomer'; B. Create a script that updates all views that have dependencies on a changed object Assume that the table Person.Person was changed in a way that would affect the definition of any views that are cre...