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create table tbl(id int primary key auto_increment, lang varchar(2)); insert into tbl(lang) values ('EN'),('ES'),('RU'), ('EN'),('ES'),('RU'), ('EN'),('ES'),('RU'), ('EN'),('ES'),('RU'), ('EN'),('ES'),('RU'), ('EN'),('ES'),('RU'), ('EN'),('ES'),('RU'), ('EN'),('ES'),('RU'), ('EN'),('ES'),('RU'), ('EN'),('ES'),('RU'); with data as ( select id, lang, row_number() over (partition by lang order by rand()) rn from tbl ) select id, lang from data where rn < 11;
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