mysql - Select from multiple tables with UNION -


i've trying select records 3 tables in 1 database union i've got error:

#1248 - every derived table must have own alias

this query i'm trying:

select *   (select column1, 'table1' table1 union    select column1, 'table2'  table2 union    select column1, 'table3'  table3)  column1 not 'abr%' , length(column1) < 8;

what mean error , how can fix , show proper results?

you need give derived table alias says:

select *   (select column1, 'table1' table1 union    select column1, 'table2'  table2 union    select column1, 'table3'  table3) dtalias column1 not 'abr%' , length(column1) < 8;

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