test(sql): cover mysql/snowflake in SHOW-statement FORCE_LIMIT regression test

Parametrize the regression test over engines whose sqlglot dialect
parses SHOW into a real exp.Show node (starrocks, mysql, snowflake),
not just starrocks, since the fix guards on AST node type rather than
dialect and any of these engines is equally exposed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/unit_tests/sql/parse_tests.py

@@ -2243,6 +2243,17 @@ def test_set_limit_value(
     assert statement.format() == expected
 
 
+@pytest.mark.parametrize(
+    "engine",
+    [
+        # Engines whose sqlglot dialect parses `SHOW` into a real `exp.Show`
+        # node (as opposed to falling back to an opaque `exp.Command`, which
+        # doesn't expose a `limit` arg and so was never affected by this bug).
+        "starrocks",
+        "mysql",
+        "snowflake",
+    ],
+)
 @pytest.mark.parametrize(
     "sql",
     [
@@ -2251,7 +2262,9 @@ def test_set_limit_value(
         "SHOW CREATE TABLE test.will_test1",
     ],
 )
-def test_set_limit_value_leaves_show_statements_unchanged(sql: str) -> None:
+def test_set_limit_value_leaves_show_statements_unchanged(
+    sql: str, engine: str
+) -> None:
     """
     Regression for #36939: FORCE_LIMIT must not touch ``SHOW`` statements.
 
@@ -2263,8 +2276,13 @@ def test_set_limit_value_leaves_show_statements_unchanged(sql: str) -> None:
     syntax error ... Unexpected input 'LIMIT'". The statement should be
     left untouched instead, matching how ``SELECT`` statements without a
     scannable row source aren't force-limited either.
+
+    Covers multiple engines, not just StarRocks: the fix guards on the AST
+    node type (``exp.Show``), not the dialect, so any engine whose sqlglot
+    dialect parses ``SHOW`` into a real ``Show`` node (e.g. MySQL, Snowflake)
+    is equally exposed and must be equally protected.
     """
-    statement = SQLStatement(sql, "starrocks")
+    statement = SQLStatement(sql, engine)
     original = statement.format()
     statement.set_limit_value(1000, LimitMethod.FORCE_LIMIT)
     assert statement.format() == original