从postgres数据库sql脚本中的多个表中删除记录

Question

我有一个场景如下。

我有五个表：merchants，user_details，user_role，transient_payments和payments。

要求：如果transient_payments和payment表中不存在merchant_id，则该商家应从merchants，user_details，user_role

中删除

我的查询：

DELETE FROM m,ud,ur USING merchants 
       INNER JOIN user_details 
       INNER JOIN user_role 
       where merchant_id not 
       exists (select * 
               from transient_payments 
               full join payments 
               on transient_payments.merchant_id = payments.merchant_id );

Error :ERROR:  syntax error at or near "," LINE 1: DELETE FROM m,ud,ur
USING merchants INNER JOIN user_details ...
                    ^

********** Error **********
ERROR: syntax error at or near "," SQL state: 42601 Character: 14