15.00 - Maximum Number of Columns Per Table - Teradata Database

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Teradata Database
Programming Reference

Maximum Number of Columns Per Table

A base table can contain a maximum of 2,048 columns. No more than 32 of those columns can be defined with a LOB data type (see “Rules and Restrictions for Large Object Data Types” on page 37).

A maximum of 2,560 columns can be defined for a base table over its lifetime. Dropping columns does not affect this rule.

If new columns need to be added that would exceed this number, you must create a new table. You can use the SHOW TABLE statement and INSERT … SELECT statements to create and load the spin-off table.