From e696a61a2c31417fcafecffec8e2f2a0cdf860bd Mon Sep 17 00:00:00 2001
From: Qu Xuan <qu_xuan@icloud.com>
Date: Wed, 7 May 2025 13:32:35 +0800
Subject: [PATCH] fix: clickhouse remove allow_nullable_key

---
 backends/clickhouse/clickhouse.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backends/clickhouse/clickhouse.go b/backends/clickhouse/clickhouse.go
index 31c14b4..66599d7 100644
--- a/backends/clickhouse/clickhouse.go
+++ b/backends/clickhouse/clickhouse.go
@@ -183,7 +183,7 @@ func (click *SClickhouseBackend) GetCreateSQLs(ts sqlchemy.ITableSpec) []string
 			createSql += fmt.Sprintf("\nTTL `%s` + INTERVAL %d %s", ttlCol.Name(), ttlCount, ttlUnit)
 		}
 		// set default time zone of table to UTC
-		createSql += "\nSETTINGS index_granularity=8192, allow_nullable_key=1"
+		createSql += "\nSETTINGS index_granularity=8192"
 	}
 	return []string{
 		createSql,