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Teradata Interview Questions
An aggregate table is those tables which contain the summary of the existing warehouse. It is used to save the time as retrieving data from a million of records in the actual table will take too much time. So, aggregate the tables to a certain level of dimensions and use them.
Teradata supports some aggregate functions which are:
- COUNT: It is used to count the rows.
- SUM: used to calculate the sum of specified columns.
- MIN: To find the minimum value from specified columns.
- MAX: to find the maximum value from specified columns
- AVG: to calculate the average of specified columns.
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