Asked by: Augustine Esteller
technology and computing data storage and warehousing

How do you create a table in Teradata with select statement?

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CREATE TABLE active_employees AS ( SELECT * FROM employee e WHERE e.active_flg = 'Y' ) WITH DATA;
  1. Create a full copy of an existing table.
  2. Create a new copy of a table that contains only some of the original records - a subset.
  3. Create an empty table but with exactly the same structure of the original.


Also to know is, how do I copy a table in Teradata?

16.10 - Copying a Table - Teradata Data Mover

  1. In the object browser, click the check box next to the name of the table you want to copy.
  2. Click to display the Table Settings dialog box.
  3. [Optional] For Teradata tables, select one of the following criteria under Copy the following to restrict the copy job.

Additionally, what is collect statistics in Teradata? Per Teradata documentation, the purpose of COLLECT STATISTICS is to collect demographic data for one or more columns of a base table, hash index, or join index, then compute a statistical profile of the collected data and store the synopsis in the data dictionary.

what is create multiset table in Teradata?

MULTISET. SET. A MULTISET table allows duplicate rows in compliance with the ANSI/ISO SQL 2011 standard. A SET table does not allow duplicate rows. If there are uniqueness constraints on any column or set of columns in the table definition, then the table cannot have duplicate rows even if it is declared as MULTISET.

How do I create a schema in Teradata?

Teradata Studio User Guide In the Navigator, double-click on the database in which you want to create the schema. The list opens in the Object List Viewer. In the Object List Viewer, display the schema list and click . In the Create Schema form, click General and type a Name for the new schema.

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What is a multiset table?

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What is the difference between set and multiset table in Teradata?

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What is volatile table in Teradata?

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What is multiset in SQL?

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What is set table?

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What is primary index in Teradata?

Primary index is used to specify where the data resides in Teradata. It is used to specify which AMP gets the data row. Each table in Teradata is required to have a primary index defined. If the primary index is not defined, Teradata automatically assigns the primary index.

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What is fallback in Teradata?

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What is explain plan in Teradata?

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Can we collect stats on volatile table in Teradata?

A volatile table is available for all queries in the same session, but it is invisible to any other session. Statistics can be collected on volatile tables just like for permanent tables. Volatile Tables are created in the spool space of the user the session belongs to. No permanent space is needed.

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Why do we use collect stats in Teradata?

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What is gather stats in Oracle?

Administrators can gather statistics for both states and activate appropriate OLTP or OLAP statistics when needed. This enables the optimizer to generate relevant costs with respect to available system resource plans. When Oracle generates system statistics, it analyzes system activity in a specified period of time.

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What is data demographics in Teradata?

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What is AMP in Teradata?

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Does primary index allow duplicates in Teradata?

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