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@@ -164,6 +164,8 @@ class Database(object):
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sql = "SELECT * FROM NODE"
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self._cur.execute(sql, (ids))
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nodes = self._cur.fetchall()
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+ if not nodes:
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+ return []
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# sqlite returns nodes as bytes, postgresql returns them as str
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if isinstance(nodes[0][1], str):
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nodes = [node for node in nodes]
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