16.20 - Usage Notes - Teradata Database - Teradata Vantage NewSQL Engine

Teradata Vantageā„¢ Data Dictionary

Product
Teradata Database
Teradata Vantage NewSQL Engine
Release Number
16.20
Published
March 2019
Language
English (United States)
Last Update
2019-05-03
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IndexType

Value Description
P Nonpartitioned primary index, except if the primary index is also a PRIMARY KEY or UNIQUE, then K or U, respectively, is used for this column
Q Partitioned primary index with row, column, or both partitioning, except if the primary index is also a PRIMARY KEY or UNIQUE, then K or U, respectively, is used for this column
A Indicates a primary AMP index.
S Secondary index, except if the primary index is also a PRIMARY KEY or UNIQUE, then K or U, respectively, is used for this column
J Join index
N Hash index
K Primary key
U Unique constraint
V Value-ordered secondary index
H Hash-ordered ALL covering secondary index
O Valued-ordered ALL covering secondary index
I Ordering column of a composite secondary index
1 Indicates all the columns that comprise the first field of the join index.
This value is used for join and hash indexes.
2 Indicates all the columns that comprise the second field of the join index
This value is used for join and hash indexes.
G Geospatial nonunique secondary index.
To determine if a table has partitioning, including when the primary index is for a primary key or unique constraint, see the DBC.TablesV[X].PartitioningLevels column or the DBC.PartitioningConstraintsV[X].PartitioningLevels column.

To determine if a primary-indexed table has partitioning (when the primary index is not for a primary key or unique constraint) view the value of the IndexType column. IndexType is set to P for a nonpartitioned primary index or Q for a partitioned primary index.