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Parse Snowflake ALTER TABLE ADD COLUMN IF NOT EXISTS - #42
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osipovartem merged 1 commit intoOct 14, 2026
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Snowflake documents
ALTER TABLE ... ADD [COLUMN] [IF NOT EXISTS] name type, but SnowflakeDialect currently rejects the conditional form afterCOLUMN. Include SnowflakeDialect in the existing optional-column parse path, preserving the existing AST and other dialect behavior.Tests:
cargo +1.95.0 test --offline --test sqlparser_snowflake(181 passed);cargo +1.95.0 fmt --all -- --check. Independent read-only review: approved.Reference: https://docs.snowflake.com/en/sql-reference/sql/alter-table#table-column-actions-tablecolumnaction