Specifies whether the column can accept NULL values. Columns that do not allow NULL values can be added only if they have a default specified. If the new column allows NULL values and no default is ...

If a column is already in the table, you can change the following column attributes using the MODIFY clause: length, informat, format, and label. The values in a table are either truncated or padded ...

Fixes cockroachdb#32917. This PR adds support for the add column references statement by allowing the foreign key building code to use columns and indexes added in the current txn. The schema changer ...