BenSatori commented on code in PR #2438:
URL:
https://github.com/apache/datafusion-sqlparser-rs/pull/2438#discussion_r3802621667
##########
tests/sqlparser_snowflake.rs:
##########
@@ -4912,3 +4912,61 @@ fn test_select_dollar_column_from_stage() {
// With table function args, without alias
snowflake().verified_stmt("SELECT $1, $2 FROM @mystage1(file_format =>
'myformat')");
}
+
+#[test]
+fn test_snowflake_pipe_operator() {
+ // Basic pipe: two SELECT statements chained
+ snowflake().verified_stmt("SELECT * FROM tablename ->> SELECT * FROM $1");
+
+ // Three statements chained
+ snowflake().verified_stmt(
+ "SELECT * FROM dept WHERE dname = 'SALES' ->> SELECT * FROM emp WHERE
deptno IN (SELECT deptno FROM $1) ->> SELECT ename, sal FROM $1 ORDER BY 2
DESC",
+ );
+
+ // Reference to a non-adjacent prior result using $2
+ snowflake().verified_stmt("SELECT a FROM t ->> SELECT b FROM t2 ->> SELECT
$1 FROM $2");
+
+ // Non-SELECT statements in the chain (CREATE/INSERT)
+ snowflake()
+ .verified_stmt("CREATE TABLE t (id INT) ->> INSERT INTO t VALUES (1)
->> SELECT * FROM $1");
+
+ // Pipe operator is not parsed in non-Snowflake dialects
+ use sqlparser::dialect::GenericDialect;
+ use sqlparser::parser::Parser;
+ // In a generic dialect, ->> is a binary operator, not a pipe
+ let stmts = Parser::parse_sql(&GenericDialect {}, "SELECT 1").unwrap();
Review Comment:
Added that to GenericDialect, and also renamed it so it doesn't look awkward
(in case other DBs adds support for this as well).
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