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Snowflake: Add dollar quoted string literal #2770

Merged
merged 3 commits into from Mar 2, 2022
Merged

Snowflake: Add dollar quoted string literal #2770

merged 3 commits into from Mar 2, 2022

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jpy-git
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@jpy-git jpy-git commented Mar 2, 2022

Brief summary of the change made

Snowflake allows dollar quoted string literals (similar to postgres but no tags). I've updated QuotedLiteralSegment to allow these and keep consistent with the postgres approach.

Are there any other side effects of this change that we should be aware of?

No

Pull Request checklist

  • Please confirm you have completed any of the necessary steps below.

  • Included test cases to demonstrate any code changes, which may be one or more of the following:

    • .yml rule test cases in test/fixtures/rules/std_rule_cases.
    • .sql/.yml parser test cases in test/fixtures/dialects (note YML files can be auto generated with tox -e generate-fixture-yml).
    • Full autofix test cases in test/fixtures/linter/autofix.
    • Other.
  • Added appropriate documentation for the change.

  • Created GitHub issues for any relevant followup/future enhancements if appropriate.

Comment on lines -123 to -129
DoubleQuotedLiteralSegment=NamedParser(
"double_quote",
CodeSegment,
name="quoted_literal",
type="literal",
trim_chars=('"',),
),
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This isn't part of Snowflake and isn't used anywhere in the dialect so cleaning up.

@@ -505,7 +513,7 @@ class FunctionDefinitionGrammar(BaseSegment):
type = "function_definition"
match_grammar = Sequence(
"AS",
OneOf(Ref("QuotedLiteralSegment"), Ref("DollarQuotedLiteralSegment")),
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DollarQuotedLiteralSegment isn't anywhere else in the code base. We used to have it in Postgres, but was since combined with QuotedLiteralSegment to simplify the dialect. This is probably just a holdover from when Snowflake inherited from Postgres.

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@tunetheweb tunetheweb left a comment

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LGTM!

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codecov bot commented Mar 2, 2022

Codecov Report

Merging #2770 (1a55603) into main (251f223) will not change coverage.
The diff coverage is n/a.

Impacted file tree graph

@@            Coverage Diff            @@
##              main     #2770   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          163       163           
  Lines        12214     12214           
=========================================
  Hits         12214     12214           
Impacted Files Coverage Δ
src/sqlfluff/dialects/dialect_snowflake.py 100.00% <ø> (ø)

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@tunetheweb tunetheweb merged commit 9a408d3 into sqlfluff:main Mar 2, 2022
@jpy-git jpy-git deleted the snowflake_dollar_quoted_literal branch March 2, 2022 23:16
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2 participants