Rules and Restrictions - Advanced SQL Engine - Teradata Database

DATASET Data Type

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
17.00
Published
June 2020
Language
English (United States)
Last Update
2021-01-23
dita:mapPath
des1556232910526.ditamap
dita:ditavalPath
lze1555437562152.ditaval
dita:id
B035-1198
lifecycle
previous
Product Category
Teradata Vantageā„¢

The structure of the two schemas (one with all the fields, and one with just the First Name and Age fields) must be compatible. The SchemaMatch function compares CLOBs or JSON types representing an Avro schema for compatibility, and can confirm ahead of time whether the schemas are compatible.

The resulting Avro instance is composed of the new schema with the fields (First Name and Age, in the example) and the projected binary-encoded Avro value. If the values for the Avro instance or the new schema are NULL, the result is NULL.

If the new schema is invalid or incompatible with the original schema, an error occurs.