From 6938d4298267d058b5b985712ea06e3ae79f9569 Mon Sep 17 00:00:00 2001
From: Roman Borschel <roman@cluvio.com>
Date: Wed, 2 Apr 2025 17:48:49 +0200
Subject: [PATCH] Allow single quotes in EXTRACT() for Redshift.

Just like Postgres, Redshift supports enclosing the "datepart" parameter
in single quotes.
---
 src/dialect/redshift.rs     | 4 ++++
 tests/sqlparser_redshift.rs | 6 ++++++
 2 files changed, 10 insertions(+)

diff --git a/src/dialect/redshift.rs b/src/dialect/redshift.rs
index 25b8f1644..d90eb6e7d 100644
--- a/src/dialect/redshift.rs
+++ b/src/dialect/redshift.rs
@@ -121,4 +121,8 @@ impl Dialect for RedshiftSqlDialect {
     fn supports_array_typedef_with_brackets(&self) -> bool {
         true
     }
+
+    fn allow_extract_single_quotes(&self) -> bool {
+        true
+    }
 }
diff --git a/tests/sqlparser_redshift.rs b/tests/sqlparser_redshift.rs
index 7736735cb..c75abe16f 100644
--- a/tests/sqlparser_redshift.rs
+++ b/tests/sqlparser_redshift.rs
@@ -391,3 +391,9 @@ fn test_parse_nested_quoted_identifier() {
         .parse_sql_statements(r#"SELECT 1 AS ["1]"#)
         .is_err());
 }
+
+#[test]
+fn parse_extract_single_quotes() {
+    let sql = "SELECT EXTRACT('month' FROM my_timestamp) FROM my_table";
+    redshift().verified_stmt(&sql);
+}