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fix #390 AttributeError: 'NoneType' object has no attribute 'normalized' #437

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fix #390 AttributeError: 'NoneType' object has no attribute 'normalized' #437

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1 change: 1 addition & 0 deletions sql_metadata/parser.py
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Original file line number Diff line number Diff line change
Expand Up @@ -426,6 +426,7 @@ def tables_aliases(self) -> Dict[str, str]:
token.last_keyword_normalized in TABLE_ADJUSTMENT_KEYWORDS
and (token.is_name or (token.is_keyword and not token.is_as_keyword))
and not token.next_token.is_as_keyword
and not token.value in RELEVANT_KEYWORDS
):
if token.previous_token.is_as_keyword:
# potential <DB.<SCHEMA>.<TABLE> as <ALIAS>
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4 changes: 4 additions & 0 deletions sql_metadata/token.py
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Expand Up @@ -228,6 +228,10 @@ def is_alias_of_self(self) -> bool:
end_of_column = end_of_column.find_nearest_token(
[",", "FROM"], value_attribute="normalized", direction="right"
)

if end_of_column is EmptyToken:
return False

return end_of_column.previous_token.normalized == self.normalized

@property
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