Function containsSystemSchema

backend/plugin/parser/trino/query_type.go:114–129

containsSystemSchema reports whether a query references a Trino system/metadata schema, via a case-insensitive substring scan. This mirrors the legacy plugin's heuristic (and omni analysis.Classify's refineSelect) so the SELECT → SelectInfoSchema promotion is identical across the legacy and omni sta

(sql string)

// plugin's heuristic (and omni analysis.Classify's refineSelect) so the SELECT →
// SelectInfoSchema promotion is identical across the legacy and omni stacks.
func containsSystemSchema(sql string) bool {
	lowerSQL := strings.ToLower(sql)
	systemPrefixes := []string{
		"system.",
		"information_schema.",
		"$system.",
		"catalog.",
		"metadata.",
	}
	for _, prefix := range systemPrefixes {
		if strings.Contains(lowerSQL, prefix) {
			return true
		}
	}
	return false
}