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fix(duckdb): Fix lexical backslash handling #7769

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georgesittas merged 2 commits into from
Jun 22, 2026
+6 −1
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fix(duckdb): Fix lexical backslash handling #7769

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fix(duckdb): Fix lexical backslash handling
fivetran-amrutabhimsenayachit Jun 19, 2026
6b9ced7
Update sqlglot/dialects/dialect.py
georgesittas Jun 22, 2026
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5 changes: 4 additions & 1 deletion sqlglot/dialects/dialect.py
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Original file line number Diff line number Diff line change
Expand Up @@ -305,7 +305,10 @@ def get_start_end(token_type: TokenType) -> tuple[str | None, str | None]:
**klass.UNESCAPED_SEQUENCES,
}

klass.ESCAPED_SEQUENCES = {v: k for k, v in klass.UNESCAPED_SEQUENCES.items()}
klass.ESCAPED_SEQUENCES = {
# The filter is necessary because of `\\a -> a` in Snowflake; we can't replace `a` with `\a`.
v: k for k, v in klass.UNESCAPED_SEQUENCES.items() if not v.isprintable() or v == "\\"
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}

klass.SUPPORTS_COLUMN_JOIN_MARKS = "(+)" in klass.tokenizer_class.KEYWORDS

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2 changes: 2 additions & 0 deletions sqlglot/dialects/snowflake.py
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Expand Up @@ -16,6 +16,8 @@
class Snowflake(Dialect):
# https://docs.snowflake.com/en/sql-reference/identifiers-syntax
NORMALIZATION_STRATEGY = NormalizationStrategy.UPPERCASE
# https://docs.snowflake.com/en/sql-reference/data-types-text#escape-sequences
UNESCAPED_SEQUENCES = {"\\a": "a", "\\v": "v"}
NULL_ORDERING = "nulls_are_large"
TIME_FORMAT = "'YYYY-MM-DD HH24:MI:SS'"
SUPPORTS_USER_DEFINED_TYPES = False
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