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If the engine wants to avoid rnd_pos() - force a temporary table before a filesort. But don't do it if addon_fields are used.
28 lines
970 B
Plaintext
28 lines
970 B
Plaintext
#
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# MDEV-14500 Support engines without rnd_pos
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#
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source include/have_archive.inc;
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source include/have_sequence.inc;
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source include/have_partition.inc;
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create table t1(c1 int not null, c2 double not null, c3 char(255) not null) engine=archive;
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insert t1 select seq, seq+0.7, concat('row with c1 = ', seq) from seq_1_to_10;
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explain partitions select c1,c3 from t1 order by c2;
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set max_length_for_sort_data = 4;
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explain partitions select c1,c3 from t1 order by c2;
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flush status;
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select c1,c3 from t1 order by c2;
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set max_length_for_sort_data = default;
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show status where variable_name like '%tmp%' and value != 0;
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alter table t1 partition by hash (c1) partitions 3;
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explain partitions select c1,c3 from t1 order by c2;
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set max_length_for_sort_data = 4;
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explain partitions select c1,c3 from t1 order by c2;
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flush status;
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select c1,c3 from t1 order by c2;
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set max_length_for_sort_data = default;
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show status where variable_name like '%tmp%' and value != 0;
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drop table t1;
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