doris：4.0.1版本，存算分离
运行SQL1
select * from __internal_schema.audit_log limit 1
union all
select * from __internal_schema.audit_log limit 1
报错：
Execution failed: Error Failed to execute sql: java.sql.SQLException: (conn=17) errCode = 2, detailMessage = no viable alternative at input 'limit'(line 1, pos 43)
运行SQL2
select * from __internal_schema.audit_log order by time desc limit 1
union all
select * from __internal_schema.audit_log order by time desc limit 1
报错：
Execution failed: Error Failed to execute sql: java.sql.SQLException: (conn=26) errCode = 2, detailMessage = no viable alternative at input 'order'(line 1, pos 42)
