Add support for optional precission in TIMESTAMP_NTZ

Author: Vedin

src/parser/mod.rs

@@ -9869,7 +9869,12 @@ impl<'a> Parser<'a> {
                     self.parse_optional_precision()?,
                     TimezoneInfo::Tz,
                 )),
-                Keyword::TIMESTAMP_NTZ => Ok(DataType::TimestampNtz),
+                // Consume optional precision for Snowflake/Databricks TIMESTAMP_NTZ, e.g. TIMESTAMP_NTZ(3)
+                // Precision is currently not represented in the AST variant, but we must not error on it.
+                Keyword::TIMESTAMP_NTZ => {
+                    let _ = self.parse_optional_precision()?;
+                    Ok(DataType::TimestampNtz)
+                }
                 Keyword::TIME => {
                     let precision = self.parse_optional_precision()?;
                     let tz = if self.parse_keyword(Keyword::WITH) {

tests/sqlparser_snowflake.rs

@@ -44,6 +44,13 @@ fn test_snowflake_create_table() {
     }
 }
 
+#[test]
+fn test_snowflake_create_table_timestamp_ntz_precision_ctas_values() {
+    let sql = "CREATE TABLE t (x TIMESTAMP_NTZ(3)) AS SELECT * FROM VALUES ('2025-04-09T21:11:23')";
+    let canonical = "CREATE TABLE t (x TIMESTAMP_NTZ) AS SELECT * FROM (VALUES ('2025-04-09T21:11:23'))";
+    snowflake().one_statement_parses_to(sql, canonical);
+}
+
 #[test]
 fn parse_sf_create_secure_view_and_materialized_view() {
     for sql in [