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sql = "select * from toutiao where title like '%"&key& "%' or content like '%"&key& "%' "
sql = "select * from xinxi where title like '%"&key& "%' or content like '%"&key& "%' "
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select * from (select name,content from A union all select name,content from B union all select name,content from C) where name like '%Öйú%' or content like '%Öйú%'

select A.name, A.content, B.name, B.content, C.name, C.content from A,B,C where name like '%Öйú%' or content like '%Öйú%'

SQL code:

select * from a where name like '%Öйú%' or content like '%Öйú%'
union all
select * from b where name like '%Öйú%' or content like '%Öйú%'
union all
select * from c where name like '%Öйú%' or content like '%Öйú%'



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@SYS_LNNO varchar(20),
@SYS_CALLER varchar(20),
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