WebDec 23, 2013 · 192 3 8 22. You're not accessing the view in your query. And of course you should change UNION to UNION ALL to avoid the DISTINCT overhead. – dnoeth. Dec 23, 2013 at 9:28. change UNION in UNION ALL. You have put P2, Z2, I2 so your query will return different rows by 3 data sets. Add index on REGION_CD field. WebTuning your database for optimal performance means more than following a few short steps in a vendor-specific guide. For maximum improvement, you need a broad and …
Teradata Performance Tuning and Optimization - DocShare.tips
WebTeradata SQL Query Optimization or Performance Tuning SQL and Indexes: 1) Primary indexes: Use primary indexes for joins whenever possible, and specify in the where clause all the columns for the primary indexes. 2) Secondary indexes (10% rule rumor): The optimizer does not actually use a 10% rule to determine if a secondary index will be used. WebWith Teradata Performance, you have access to a Database Administrator (DBA), workload management expert, or performance expert up to 16 hours per quarter. Regular Health Checks Proactive service is a hallmark of the Performance tier, with regular health checks being an important part of that service. how do body aches feel
Teradata Query Performance Tuning: DWHPro
Webwhich performance tuning can be done in a DWH environment (specifically teradata): Level 1 - Physical Design Tuning Level 2 - Query Level Tuning Level 3 - System or APP … WebPerformance tuning and optimization of a query involves collecting statistics on join columns, avoiding cross product join, selection of appropriate primary. index (to avoid skewness in storage) and using secondary index. Avoiding NUSI is advisable. Download Teradata Interview Questions And Answers PDF. WebData engineering & analytics expert - Free capacities for projects (Teradata, Snowflake, BigQuery). Author of the book "Teradata Query Performance Tuning" 5 Tage how do body scanners work