oceanbase

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--disable_query_log
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set @@session.explicit_defaults_for_timestamp=off;
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--enable_query_log
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#owner: bin.lb
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#owner group: sql1
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#tags: group_by
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#description:
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--disable_warnings
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drop table if exists test;
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--enable_warnings
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create table test(a int primary key,b int,c int);
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insert into test values(1,4,null);
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insert into test values(3,3,null);
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insert into test values(4,3,null);
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select avg(distinct(a)),avg(a),avg(b) from test;
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select avg(distinct(b)),avg(b),avg(c) from test;
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select avg(c),avg(b),avg(distinct(b)) from test;
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select avg(c),avg(b),avg(b) from test;
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