Teradata Database conforms closely to the ANSI/ISO SQL standard while supporting extensions that enable users to take full advantage of the efficiency benefits of parallelism. Teradata develops new features that conform to existing ANSI/ISO standards and handles differences between Teradata SQL and ANSI/ISO SQL as follows:
WHEN ... | THEN ... |
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the difference between the Teradata SQL dialect and the ANSI/ISO SQL standard for a language feature is slight | the ANSI/ISO SQL is added to Teradata Database feature as an option. |
the difference between the Teradata SQL dialect and the ANSI/ISO SQL standard for a language feature is significant | both syntaxes are offered and the user has the choice of operating in either Teradata or ANSI mode or of turning off SQL Flagger. The mode can be defined:
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