Producer operators:[produce a Data Stream]which 'produce' a data stream, usually by reading source data. Consumer operators:[consume a Data Stream]which 'consume' data from a data stream, usually to be loaded to a target. (2) Two additional operator types are: Filter operators:[Consume and...
Teradata RDBMS教程说明书 Teradata
CREATE ALIAS TABLE Usage Running and Monitoring Queries Creating and Running Queries Creating a Single Statement or Script Running an Existing Statement or Script Configuring the compute group option Using the Simple Query Builder Visualizing Data Launching Visualization Results Tab Charts Ta...
Producer operators:[produce a Data Stream]which 'produce' a data stream, usually by reading source data. Consumer operators:[consume a Data Stream]which 'consume' data from a data stream, usually to be loaded to a target. (2) Two additional operator types are: Filter operators:[Consume and...
AzureTableStorageLinkedService BigDataPoolParametrizationReference BigDataPoolReferenceType BinaryDataset BinaryReadSettings BinarySink BinarySource BlobEventTypes BlobEventsTrigger BlobSink BlobSource BlobTrigger CassandraLinkedService CassandraSource CassandraSourceReadConsistencyLevels CassandraTableDataset ChainingTrigger ...
. Other database elements from the source system, such as indexes and log files, aren't directly migrated as these may not be needed or may be implemented differently within the new target environment. For example, there's no equivalent of theMULTISEToption within Teradata'sCREATE TABLEsyntax...
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插入空值:要在Teradata数据库中插入空值,可以在插入语句中使用NULL关键字来表示空值。例如,如果要插入一个空值到名为"column_name"的列中,可以使用以下语法:INSERT INTO table_name (column_name) VALUES (NULL); 执行插入语句:使用JDBC的Statement或PreparedStatement对象执行插入语句。可以使用executeUpdate()方法来执行...
Teradata数据仓库资深官方教材 Module3:TeradataBasics Aftercompletingthismodule,youwillbeableto:ListanddescribethemajorcomponentsoftheTeradataarchitecture.DescribehowthecomponentsinteracttomanageincomingandoutgoingdataList5typesofTeradatadatabaseobjects TeradataStorageArchitecture RecordsFromClient(inrandomsequence)...
Tera Blog 收藏 Teradata SQL调优 1.优化过程:依照运行时间,数据量和复杂度来定位瓶颈。 查看sql执行计划,判断其合理性。 性能监控 ==》目标选取 ==》性能分析 ==》过程优化 ==》运行跟踪(性能监控) 注意:每个过程中都会产生必须的文档 2.性能分析: ? Review PDM --表定义 --PI的选择 --表的记录数与空间...