f Reluctantly CHECK the same thing differently

Author: tnull

src/io/sqlite_store.rs

@@ -47,7 +47,7 @@ impl SqliteStore {
 		let sql = format!(
 			"CREATE TABLE IF NOT EXISTS {} (
 			namespace TEXT NOT NULL,
-			key TEXT NOT NULL CHECK (length(key) > 0),
+			key TEXT NOT NULL CHECK (key <> ''),
 			value BLOB, PRIMARY KEY ( namespace, key )
 		);",
 			KV_TABLE_NAME