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Bound find_next_generated_user_id DB query.

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We can easily bound the set of user IDs we pull out of the DB, so lets
do that.
This commit is contained in:
Erik Johnston 2019-10-02 11:21:52 +01:00
parent ecd254bc49
commit d69fd53f74
1 changed files with 3 additions and 1 deletions
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4
synapse/storage/registration.py
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@ -493,7 +493,9 @@ class RegistrationWorkerStore(SQLBaseStore):
"""
def _find_next_generated_user_id(txn):
txn.execute("SELECT name FROM users")
# We bound between '@1' and '@a' to avoid pulling the entire table
# out.
txn.execute("SELECT name FROM users WHERE '@1' <= name AND name < '@a'")
regex = re.compile(r"^@(\d+):")