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This commit is contained in:
renjianbo
2025-08-29 00:34:40 +08:00
parent 09065f2ce7
commit 2fe3474d9e
3060 changed files with 29217 additions and 87137 deletions
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.venv/Lib/site-packages/sqlalchemy/dialects/mssql/base.py
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@@ -3632,27 +3632,36 @@ where
@reflection.cache
@_db_plus_owner
def get_columns(self, connection, tablename, dbname, owner, schema, **kw):
sys_columns = ischema.sys_columns
sys_types = ischema.sys_types
sys_default_constraints = ischema.sys_default_constraints
computed_cols = ischema.computed_columns
identity_cols = ischema.identity_columns
extended_properties = ischema.extended_properties
# to access sys tables, need an object_id.
# object_id() can normally match to the unquoted name even if it
# has special characters. however it also accepts quoted names,
# which means for the special case that the name itself has
# "quotes" (e.g. brackets for SQL Server) we need to "quote" (e.g.
# bracket) that name anyway. Fixed as part of #12654
is_temp_table = tablename.startswith("#")
if is_temp_table:
owner, tablename = self._get_internal_temp_table_name(
connection, tablename
)
columns = ischema.mssql_temp_table_columns
else:
columns = ischema.columns
computed_cols = ischema.computed_columns
identity_cols = ischema.identity_columns
object_id_tokens = [self.identifier_preparer.quote(tablename)]
if owner:
whereclause = sql.and_(
columns.c.table_name == tablename,
columns.c.table_schema == owner,
)
full_name = columns.c.table_schema + "." + columns.c.table_name
else:
whereclause = columns.c.table_name == tablename
full_name = columns.c.table_name
object_id_tokens.insert(0, self.identifier_preparer.quote(owner))
if is_temp_table:
object_id_tokens.insert(0, "tempdb")
object_id = func.object_id(".".join(object_id_tokens))
whereclause = sys_columns.c.object_id == object_id
if self._supports_nvarchar_max:
computed_definition = computed_cols.c.definition
@@ -3662,92 +3671,112 @@ where
computed_cols.c.definition, NVARCHAR(4000)
)
object_id = func.object_id(full_name)
s = (
sql.select(
columns.c.column_name,
columns.c.data_type,
columns.c.is_nullable,
columns.c.character_maximum_length,
columns.c.numeric_precision,
columns.c.numeric_scale,
columns.c.column_default,
columns.c.collation_name,
sys_columns.c.name,
sys_types.c.name,
sys_columns.c.is_nullable,
sys_columns.c.max_length,
sys_columns.c.precision,
sys_columns.c.scale,
sys_default_constraints.c.definition,
sys_columns.c.collation_name,
computed_definition,
computed_cols.c.is_persisted,
identity_cols.c.is_identity,
identity_cols.c.seed_value,
identity_cols.c.increment_value,
ischema.extended_properties.c.value.label("comment"),
extended_properties.c.value.label("comment"),
)
.select_from(sys_columns)
.join(
sys_types,
onclause=sys_columns.c.user_type_id
== sys_types.c.user_type_id,
)
.outerjoin(
sys_default_constraints,
sql.and_(
sys_default_constraints.c.object_id
== sys_columns.c.default_object_id,
sys_default_constraints.c.parent_column_id
== sys_columns.c.column_id,
),
)
.select_from(columns)
.outerjoin(
computed_cols,
onclause=sql.and_(
computed_cols.c.object_id == object_id,
computed_cols.c.name
== columns.c.column_name.collate("DATABASE_DEFAULT"),
computed_cols.c.object_id == sys_columns.c.object_id,
computed_cols.c.column_id == sys_columns.c.column_id,
),
)
.outerjoin(
identity_cols,
onclause=sql.and_(
identity_cols.c.object_id == object_id,
identity_cols.c.name
== columns.c.column_name.collate("DATABASE_DEFAULT"),
identity_cols.c.object_id == sys_columns.c.object_id,
identity_cols.c.column_id == sys_columns.c.column_id,
),
)
.outerjoin(
ischema.extended_properties,
extended_properties,
onclause=sql.and_(
ischema.extended_properties.c["class"] == 1,
ischema.extended_properties.c.major_id == object_id,
ischema.extended_properties.c.minor_id
== columns.c.ordinal_position,
ischema.extended_properties.c.name == "MS_Description",
extended_properties.c["class"] == 1,
extended_properties.c.name == "MS_Description",
sys_columns.c.object_id == extended_properties.c.major_id,
sys_columns.c.column_id == extended_properties.c.minor_id,
),
)
.where(whereclause)
.order_by(columns.c.ordinal_position)
.order_by(sys_columns.c.column_id)
)
c = connection.execution_options(future_result=True).execute(s)
if is_temp_table:
exec_opts = {"schema_translate_map": {"sys": "tempdb.sys"}}
else:
exec_opts = {"schema_translate_map": {}}
c = connection.execution_options(**exec_opts).execute(s)
cols = []
for row in c.mappings():
name = row[columns.c.column_name]
type_ = row[columns.c.data_type]
nullable = row[columns.c.is_nullable] == "YES"
charlen = row[columns.c.character_maximum_length]
numericprec = row[columns.c.numeric_precision]
numericscale = row[columns.c.numeric_scale]
default = row[columns.c.column_default]
collation = row[columns.c.collation_name]
name = row[sys_columns.c.name]
type_ = row[sys_types.c.name]
nullable = row[sys_columns.c.is_nullable] == 1
maxlen = row[sys_columns.c.max_length]
numericprec = row[sys_columns.c.precision]
numericscale = row[sys_columns.c.scale]
default = row[sys_default_constraints.c.definition]
collation = row[sys_columns.c.collation_name]
definition = row[computed_definition]
is_persisted = row[computed_cols.c.is_persisted]
is_identity = row[identity_cols.c.is_identity]
identity_start = row[identity_cols.c.seed_value]
identity_increment = row[identity_cols.c.increment_value]
comment = row[ischema.extended_properties.c.value]
comment = row[extended_properties.c.value]
coltype = self.ischema_names.get(type_, None)
kwargs = {}
if coltype in (
MSString,
MSChar,
MSNVarchar,
MSNChar,
MSText,
MSNText,
MSBinary,
MSVarBinary,
sqltypes.LargeBinary,
):
if charlen == -1:
charlen = None
kwargs["length"] = charlen
kwargs["length"] = maxlen if maxlen != -1 else None
elif coltype in (
MSString,
MSChar,
MSText,
):
kwargs["length"] = maxlen if maxlen != -1 else None
if collation:
kwargs["collation"] = collation
elif coltype in (
MSNVarchar,
MSNChar,
MSNText,
):
kwargs["length"] = maxlen // 2 if maxlen != -1 else None
if collation:
kwargs["collation"] = collation
@@ -3991,10 +4020,8 @@ index_info AS (
)
# group rows by constraint ID, to handle multi-column FKs
fkeys = []
def fkey_rec():
return {
fkeys = util.defaultdict(
lambda: {
"name": None,
"constrained_columns": [],
"referred_schema": None,
@@ -4002,8 +4029,7 @@ index_info AS (
"referred_columns": [],
"options": {},
}
fkeys = util.defaultdict(fkey_rec)
)
for r in connection.execute(s).all():
(

63
.venv/Lib/site-packages/sqlalchemy/dialects/mssql/information_schema.py
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@@ -88,23 +88,41 @@ columns = Table(
schema="INFORMATION_SCHEMA",
)
mssql_temp_table_columns = Table(
"COLUMNS",
sys_columns = Table(
"columns",
ischema,
Column("TABLE_SCHEMA", CoerceUnicode, key="table_schema"),
Column("TABLE_NAME", CoerceUnicode, key="table_name"),
Column("COLUMN_NAME", CoerceUnicode, key="column_name"),
Column("IS_NULLABLE", Integer, key="is_nullable"),
Column("DATA_TYPE", String, key="data_type"),
Column("ORDINAL_POSITION", Integer, key="ordinal_position"),
Column(
"CHARACTER_MAXIMUM_LENGTH", Integer, key="character_maximum_length"
),
Column("NUMERIC_PRECISION", Integer, key="numeric_precision"),
Column("NUMERIC_SCALE", Integer, key="numeric_scale"),
Column("COLUMN_DEFAULT", Integer, key="column_default"),
Column("COLLATION_NAME", String, key="collation_name"),
schema="tempdb.INFORMATION_SCHEMA",
Column("object_id", Integer),
Column("name", CoerceUnicode),
Column("column_id", Integer),
Column("default_object_id", Integer),
Column("user_type_id", Integer),
Column("is_nullable", Integer),
Column("ordinal_position", Integer),
Column("max_length", Integer),
Column("precision", Integer),
Column("scale", Integer),
Column("collation_name", String),
schema="sys",
)
sys_types = Table(
"types",
ischema,
Column("name", CoerceUnicode, key="name"),
Column("system_type_id", Integer, key="system_type_id"),
Column("user_type_id", Integer, key="user_type_id"),
Column("schema_id", Integer, key="schema_id"),
Column("max_length", Integer, key="max_length"),
Column("precision", Integer, key="precision"),
Column("scale", Integer, key="scale"),
Column("collation_name", CoerceUnicode, key="collation_name"),
Column("is_nullable", Boolean, key="is_nullable"),
Column("is_user_defined", Boolean, key="is_user_defined"),
Column("is_assembly_type", Boolean, key="is_assembly_type"),
Column("default_object_id", Integer, key="default_object_id"),
Column("rule_object_id", Integer, key="rule_object_id"),
Column("is_table_type", Boolean, key="is_table_type"),
schema="sys",
)
constraints = Table(
@@ -117,6 +135,17 @@ constraints = Table(
schema="INFORMATION_SCHEMA",
)
sys_default_constraints = Table(
"default_constraints",
ischema,
Column("object_id", Integer),
Column("name", CoerceUnicode),
Column("schema_id", Integer),
Column("parent_column_id", Integer),
Column("definition", CoerceUnicode),
schema="sys",
)
column_constraints = Table(
"CONSTRAINT_COLUMN_USAGE",
ischema,
@@ -182,6 +211,7 @@ computed_columns = Table(
ischema,
Column("object_id", Integer),
Column("name", CoerceUnicode),
Column("column_id", Integer),
Column("is_computed", Boolean),
Column("is_persisted", Boolean),
Column("definition", CoerceUnicode),
@@ -220,6 +250,7 @@ identity_columns = Table(
ischema,
Column("object_id", Integer),
Column("name", CoerceUnicode),
Column("column_id", Integer),
Column("is_identity", Boolean),
Column("seed_value", NumericSqlVariant),
Column("increment_value", NumericSqlVariant),