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Merge pull request #49360 from evillique/alias-restricted-keywords

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Allow restricted keywords if alias is quoted
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Nikolay Degterinsky 2023-05-02 15:02:05 +02:00 committed by GitHub
commit f87c418fc8
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3 changed files with 5 additions and 1 deletions
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4
src/Parsers/ExpressionElementParsers.cpp
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@ -1429,10 +1429,12 @@ bool ParserAlias::parseImpl(Pos & pos, ASTPtr & node, Expected & expected)
if (!allow_alias_without_as_keyword && !has_as_word) if (!allow_alias_without_as_keyword && !has_as_word)
return false; return false;
bool is_quoted = pos->type == TokenType::QuotedIdentifier;
if (!id_p.parse(pos, node, expected)) if (!id_p.parse(pos, node, expected))
return false; return false;
if (!has_as_word) if (!has_as_word && !is_quoted)
{ {
/** In this case, the alias can not match the keyword - /** In this case, the alias can not match the keyword -
* so that in the query "SELECT x FROM t", the word FROM was not considered an alias, * so that in the query "SELECT x FROM t", the word FROM was not considered an alias,

1
tests/queries/0_stateless/02725_alias_with_restricted_keywords.reference Normal file
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@ -0,0 +1 @@
1 2

1
tests/queries/0_stateless/02725_alias_with_restricted_keywords.sql Normal file
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@ -0,0 +1 @@
SELECT 1 `array`, 2 "union";