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Fix unique_constraints #152

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Merged
bchoudhary6415 merged 1 commit into from
Dec 18, 2024
Merged

Fix unique_constraints #152

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84 changes: 59 additions & 25 deletions ibm_db_sa/reflection.py
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Original file line number Diff line number Diff line change
Expand Up @@ -462,24 +462,41 @@ def get_unique_constraints(self, connection, table_name, schema=None, **kw):
table_name = self.denormalize_name(table_name)
syskeycol = self.sys_keycoluse
sysconst = self.sys_tabconst
query = sql.select(syskeycol.c.constname, syskeycol.c.colname).\
where(and_(
syskeycol.c.constname == sysconst.c.constname,
sysconst.c.tabname == table_name,
sysconst.c.tabschema == current_schema,
sysconst.c.type == 'U')).\
order_by(syskeycol.c.constname)
query = (
sql.select(syskeycol.c.constname, syskeycol.c.colname)
.select_from(
join(
syskeycol,
sysconst,
and_(
syskeycol.c.constname == sysconst.c.constname,
syskeycol.c.tabschema == sysconst.c.tabschema,
syskeycol.c.tabname == sysconst.c.tabname,
),
)
)
.where(
and_(
sysconst.c.tabname == table_name,
sysconst.c.tabschema == current_schema,
sysconst.c.type == "U",
)
)
.order_by(syskeycol.c.constname)
)
uniqueConsts = []
currConst = None
for r in connection.execute(query):
if currConst == r[0]:
uniqueConsts[-1]['column_names'].append(self.normalize_name(r[1]))
uniqueConsts[-1]["column_names"].append(self.normalize_name(r[1]))
else:
currConst = r[0]
uniqueConsts.append({
'name': self.normalize_name(currConst),
'column_names': [self.normalize_name(r[1])],
})
uniqueConsts.append(
{
"name": self.normalize_name(currConst),
"column_names": [self.normalize_name(r[1])],
}
)
return uniqueConsts


Expand Down Expand Up @@ -779,7 +796,7 @@ def get_indexes(self, connection, table_name, schema=None, **kw):
current_schema = self.denormalize_name(
schema or self.default_schema_name)
table_name = self.denormalize_name(table_name)

sysidx = self.sys_indexes
syskey = self.sys_keys

Expand Down Expand Up @@ -1170,22 +1187,39 @@ def get_unique_constraints(self, connection, table_name, schema=None, **kw):
table_name = self.denormalize_name(table_name)
syskeycol = self.sys_keycoluse
sysconst = self.sys_tabconst
query = sql.select(syskeycol.c.constname, syskeycol.c.colname).\
where(and_(
syskeycol.c.constname == sysconst.c.constname,
sysconst.c.tabname == table_name,
sysconst.c.tabschema == current_schema,
sysconst.c.type == 'U')).\
order_by(syskeycol.c.constname)
query = (
sql.select(syskeycol.c.constname, syskeycol.c.colname)
.select_from(
join(
syskeycol,
sysconst,
and_(
syskeycol.c.constname == sysconst.c.constname,
syskeycol.c.tabschema == sysconst.c.tabschema,
syskeycol.c.tabname == sysconst.c.tabname,
),
)
)
.where(
and_(
sysconst.c.tabname == table_name,
sysconst.c.tabschema == current_schema,
sysconst.c.type == "U",
)
)
.order_by(syskeycol.c.constname)
)
uniqueConsts = []
currConst = None
for r in connection.execute(query):
if currConst == r[0]:
uniqueConsts[-1]['column_names'].append(self.normalize_name(r[1]))
uniqueConsts[-1]["column_names"].append(self.normalize_name(r[1]))
else:
currConst = r[0]
uniqueConsts.append({
'name': self.normalize_name(currConst),
'column_names': [self.normalize_name(r[1])],
})
uniqueConsts.append(
{
"name": self.normalize_name(currConst),
"column_names": [self.normalize_name(r[1])],
}
)
return uniqueConsts
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