768be3f95f
1.4.3 bug [bug] [batch] [sqlite] Added support to drop named CHECK constraints that are specified as part of a column, rather than table wide. Previously, only constraints associated with the table were considered. [bug] [mysql] [ops] Fixed issue where the MySQL dialect would not correctly render the server default of a column in an alter operation, if the operation were programmatically generated from an autogenerate pass as it would not accommodate for the full structure of the DefaultClause construct. [bug] [batch] [sqlite] Fixed issue where the CAST applied to a JSON column when copying a SQLite table during batch mode would cause the data to be lost, as SQLite’s CAST with JSON appears to convert the data to the value “0”. The CAST is now skipped in a dialect-specific manner, including for JSON columns on SQLite. Pull request courtesy Sebastián Ramírez. [bug] [commands] The alembic current command no longer creates an alembic_version table in the database if one does not exist already, returning no version as the current version. This allows checking for migrations in parallel without introducing race conditions. Pull request courtesy Nikolay Edigaryev. [bug] [batch] Fixed issue where columns in a foreign-key referenced table would be replaced with null-type columns during a batch operation; while this did not generally have any side effects, it could theoretically impact a batch operation that also targets that table directly and also would interfere with future changes to the .append_column() method to disallow implicit replacement of columns. [bug] [mssql] Fixed issue where the mssql_drop_foreign_key=True flag on op.drop_column would lead to incorrect syntax error due to a typo in the SQL emitted, same typo was present in the test as well so it was not detected. Pull request courtesy Oleg Shigorin. |
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