[bug] [postgresql] Fixed issue where COMMENT directives for PostgreSQL failed to correctly
include an explicit schema name, as well as correct quoting rules for
schema, table, and column names. Pull request courtesy Matthew Sills.
[usecase] [operations] Added support for rendering of "computed" elements on Column
objects, supported in SQLAlchemy via the new Computed element
introduced in version 1.3.11. Pull request courtesy Federico Caselli.
Note that there is currently no support for ALTER COLUMN to add, remove, or
modify the "GENERATED ALWAYS AS" element from a column; at least for
PostgreSQL, it does not seem to be supported by the database. Additionally,
SQLAlchemy does not currently reliably reflect the "GENERATED ALWAYS AS"
phrase from an existing column, so there is also no autogenerate support
for addition or removal of the Computed element to or from an
existing column, there is only support for adding new columns that include
the Computed element. In the case that the Computed
element is removed from the Column object in the table metadata,
PostgreSQL and Oracle currently reflect the "GENERATED ALWAYS AS"
expression as the "server default" which will produce an op that tries to
drop the element as a default.
[bug] [api] [autogenerate] Fixed regression introduced by #579 where server default rendering
functions began to require a dialect implementation, however the
render_python_code() convenience function did not include one, thus
causing the function to fail when used in a server default context. The
function now accepts a migration context argument and also creates one
against the default dialect if one is not provided.
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Bumps alembic from 1.3.1 to 1.3.3.
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