How do you check stats on a table in Teradata?
You can view the collected statistics using HELP STATISTICS command.
How do you get stats for a new table in Teradata?
You can collect statistics on the following.
- A unique index, which can be:
- A nonunique index, which can be:
- A non-indexed column or set of columns, which can be:
- Join index.
- Hash index.
- NoPI table.
- A temporary table.
What are stats in Teradata?
What is Collect stats in Teradata? Collect Stats is used to gather the statistics on various columns as per the requirement. Thereafter the Teradata’s optimizer creates an execution strategy that is based on these statistics collected by the COLLECT STATS command.
Can we collect stats on views in Teradata?
The Statistics Collection view lets you collect statistics on table columns and indexes. Collecting statistics on columns or indexes is important to producing query plans.
Where can I collect statistics?
7 Great Websites to Find Statistics
- Statista.
- Gallup.
- Pew Research.
- Data.gov.
- UN Statistical Division.
- Google Public Data Explorer.
- Knoema.
Can stats be collect on volatile table in Teradata?
You can run collect statistics on a volatile table. CHECK constraints, DEFAULT values are not allowed in the volatile table.
Where can I get free stats?
They include:
- eMarketer and Insider Intelligence.
- Gallup.
- Gapminder.
- Google Public Data.
- HubSpot Research.
- Knoema.
- NationMaster.
- Pew Research Center.
Is it a good practice to collect statistics on all columns?
Collecting Stats is important. Don’t collect stats on every column in the table. Don’t collect stats during peak query times because the process is intensive.