Mysql 使用like查询跨两个表获得所需的输出

大家好，我正在尝试实现下面的查询，根据给定的条件从两个表返回结果。如何进行正确的查询以获得预期的输出

SELECT * FROM  bw_tempclientdetails  
where companyname like '%fff%'  
not in (SELECT * FROM bw_clientallocation where companyname like '%fff%');

使用使用

select t1.* from (
SELECT * FROM  bw_tempclientdetails  
where companyname like '%fff%' ) as t1
left join (SELECT * FROM bw_clientallocation where companyname like '%fff%') as t2
on t1.companyname = t2.companyname
where t2.companyname is null

SELECT * FROM  bw_tempclientdetails  
where companyname like '%fff%' and companyname   
not in (SELECT companyname FROM bw_clientallocation where companyname like '%fff%');

SELECT * 
  FROM  bw_tempclientdetails bw_temp
  LEFT JOIN bw_clientallocation bw_client
    ON bw_temp.companyname = bw_client.companyname  -- this is just an identifier or link between the tables
 WHERE bw_client.company LIKE '%fff%'
   AND (bw_temp.companyname LIKE '%fff%' AND bw_client.company LIKE '%fff%');