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Code Issues 32 Releases Wiki Activity

Fixed #26167 -- Added support for functional indexes.

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Thanks Simon Charette, Mads Jensen, and Mariusz Felisiak for reviews.

Co-authored-by: Markus Holtermann <info@markusholtermann.eu>
This commit is contained in:
Hannes Ljungberg
2019-10-10 20:04:17 +02:00
committed by Mariusz Felisiak
parent e3ece0144a
commit 83fcfc9ec8
28 changed files with 1306 additions and 65 deletions
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14
django/db/backends/sqlite3/introspection.py
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@@ -416,9 +416,9 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
if constraints[index]['index'] and not constraints[index]['unique']:
# SQLite doesn't support any index type other than b-tree
constraints[index]['type'] = Index.suffix
order_info = sql.split('(')[-1].split(')')[0].split(',')
orders = ['DESC' if info.endswith('DESC') else 'ASC' for info in order_info]
constraints[index]['orders'] = orders
orders = self._get_index_columns_orders(sql)
if orders is not None:
constraints[index]['orders'] = orders
# Get the PK
pk_column = self.get_primary_key_column(cursor, table_name)
if pk_column:
@@ -437,6 +437,14 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
constraints.update(self._get_foreign_key_constraints(cursor, table_name))
return constraints
def _get_index_columns_orders(self, sql):
tokens = sqlparse.parse(sql)[0]
for token in tokens:
if isinstance(token, sqlparse.sql.Parenthesis):
columns = str(token).strip('()').split(', ')
return ['DESC' if info.endswith('DESC') else 'ASC' for info in columns]
return None
def _get_column_collations(self, cursor, table_name):
row = cursor.execute("""
SELECT sql