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[sql_lab] Improve performance, only use slow func when needed (#9612)

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Daniel Vaz Gaspar
2020-04-23 09:35:57 +01:00
committed by GitHub
parent f8adfc8fbf
commit 76764acfc1
1 changed files with 4 additions and 2 deletions
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6
superset/sql_parse.py
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@@ -60,12 +60,14 @@ class ParsedQuery:
logger.debug("Parsing with sqlparse statement: %s", self.sql)
self._parsed = sqlparse.parse(self.stripped())
for statement in self._parsed:
self.__extract_from_token(statement)
self._limit = _extract_limit_from_query(statement)
self._table_names = self._table_names - self._alias_names
@property
def tables(self) -> Set[str]:
if not self._table_names:
for statement in self._parsed:
self.__extract_from_token(statement)
self._table_names = self._table_names - self._alias_names
return self._table_names
@property