比如联合查询3个表,表名分别叫a,b,c
select'a'tbname,a.*fromaunionallselect'b'tbname,b.*frombunionallselect'c'tbname,c.*fromc
时间:2023-04-17 14:01:18
比如联合查询3个表,表名分别叫a,b,c
select'a'tbname,a.*fromaunionallselect'b'tbname,b.*frombunionallselect'c'tbname,c.*fromc
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