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30 lines
1.4 KiB
SQL
30 lines
1.4 KiB
SQL
drop table if exists prewhere_column_missing;
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create table prewhere_column_missing (d Date default '2015-01-01', x UInt64) engine=MergeTree(d, x, 1);
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insert into prewhere_column_missing (x) values (0);
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select * from prewhere_column_missing;
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alter table prewhere_column_missing add column arr Array(UInt64);
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select * from prewhere_column_missing;
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select *, arraySum(arr) as s from prewhere_column_missing;
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select *, arraySum(arr) as s from prewhere_column_missing where s = 0;
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select *, arraySum(arr) as s from prewhere_column_missing prewhere s = 0;
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select *, length(arr) as l from prewhere_column_missing;
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select *, length(arr) as l from prewhere_column_missing where l = 0;
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select *, length(arr) as l from prewhere_column_missing prewhere l = 0;
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alter table prewhere_column_missing add column hash_x default intHash64(x);
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select * from prewhere_column_missing;
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select * from prewhere_column_missing where hash_x = intHash64(x);
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select * from prewhere_column_missing prewhere hash_x = intHash64(x);
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select * from prewhere_column_missing where hash_x = intHash64(x) and length(arr) = 0;
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select * from prewhere_column_missing prewhere hash_x = intHash64(x) and length(arr) = 0;
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select * from prewhere_column_missing where hash_x = intHash64(x) and length(arr) = 0 and arraySum(arr) = 0;
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select * from prewhere_column_missing prewhere hash_x = intHash64(x) and length(arr) = 0 and arraySum(arr) = 0;
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drop table prewhere_column_missing;
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