Align Snowflake dialect to new test of reserved keywords#1924
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iffyio merged 2 commits intoapache:mainfrom Jul 5, 2025
Merged
Align Snowflake dialect to new test of reserved keywords#1924iffyio merged 2 commits intoapache:mainfrom
iffyio merged 2 commits intoapache:mainfrom
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LGTM! Thanks @yoavcloud!
cc @alamb
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We've encountered a problem parsing statements like
SELECT 1, sort FROM tblwhich are valid in Snowflake.The reason is that in the Snowflake dialect, supports_projection_trailing_commas is
true. The flow then checks the keyword after the comma to see if it's reserved (FROMfor example), and if not, it stops parsing the projection. However, the check relies onDialect::is_column_aliaswhich wasn't implemented in the Snowflake dialog.The solution is to align the behavior of the Snowflake dialect to other dialects by overriding
Dialect::is_column_aliasinstead ofDialect::is_select_item_alias.