Extract #build_add_column_definition
#45643
Merged
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See #45625 for more context on exposing schema definition APIs.
Summary
This PR exposes the
AlterTable
schema definition that is produced when adding columns to a table. It does so through a new API,#build_add_column_definition
, and stores ddl on the schema definition. It refactors the existing#add_column
method to use this as an intermediate method to build the add_column definition.