Redshift alter column type no set #1912
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Expanded the support for
ALTER TABLE tbl ALTER COLUMN col TYPE <type>to the Redshift dialect in addition to PostgreSQL. Generalized this option using thesupports_xxxfunctions in the Dialect trait to maintain backwards compatibility with expected error messages in non-supporting dialects.Improved SQL output from Ast by introducing an option to determine if
SET DATAappears before theTYPEkeyword.