regression-test/suites/trino_p0/constant_group_key.groovy

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// This suit test remove constant group_by_key 
suite("constant_group_key") {
    //remove constant key
    explain {
        sql("select 'oneline' from nation group by n_nationkey, 'constant1'")
        contains "group by: `n_nationkey`"
    }

    //reserve constant key in group by
    explain {
        sql("select 'oneline' from nation group by 'constant1'")
        contains "group by: 'constant1'"
    }

    explain {
        sql("select 'oneline', sum(n_nationkey) from nation group by 'constant1', 'constant2'")
        contains "group by: 'constant1'"
    }

    explain {
        sql("select a from (select '1' as b, 'abc' as a) T  group by b, a")
        contains "group by: 'abc'"
    }

    sql "drop table if exists cgk_tbl"
    sql """
    create table cgk_tbl (a int null) 
    engine=olap duplicate key(a) 
    distributed by hash(a) buckets 1 
    properties ('replication_num'='1');"""

    qt_scalar_count 'select count(*) from cgk_tbl';
    qt_agg_count "select count(*) from cgk_tbl group by 'any const str'"
    qt_scalar_sum 'select sum(a) from cgk_tbl';
    qt_agg_sum "select sum(a) from cgk_tbl group by 'any const str'"
}