diff options
Diffstat (limited to 'lib/sqlalchemy/dialects/postgresql/base.py')
| -rw-r--r-- | lib/sqlalchemy/dialects/postgresql/base.py | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/lib/sqlalchemy/dialects/postgresql/base.py b/lib/sqlalchemy/dialects/postgresql/base.py index 5e81586b4..878693866 100644 --- a/lib/sqlalchemy/dialects/postgresql/base.py +++ b/lib/sqlalchemy/dialects/postgresql/base.py @@ -3423,10 +3423,14 @@ class PGDialect(default.DefaultDialect): ) coltype = sqltypes.NULLTYPE - # If a zero byte (''), then not a generated column. - # Otherwise, s = stored. (Other values might be added in the future.) - if generated: - computed = dict(sqltext=default, persisted=generated == "s") + # If a zero byte or blank string depending on driver (is also absent + # for older PG versions), then not a generated column. Otherwise, s = + # stored. (Other values might be added in the future.) + # + if generated not in (None, "", b"\x00"): + computed = dict( + sqltext=default, persisted=generated in ("s", b"s") + ) default = None else: computed = None |