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e89ceae61a
Sometimes it is useful to know how much does this data will take on disk, with blockSerializedSize() you can know this (although without compression). This can be a major knowledge for various aggregation functions that tracking some state (i.e. uniqCombined).
30 lines
1.5 KiB
SQL
30 lines
1.5 KiB
SQL
select 'UInt8', blockSerializedSize(0);
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select 'Nullable(UInt8)', blockSerializedSize(toNullable(0));
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select 'UInt32', blockSerializedSize(0xdeadbeaf);
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select 'UInt64', blockSerializedSize(0xdeadbeafdead);
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select 'Nullable(UInt64)', blockSerializedSize(toNullable(0xdeadbeafdead));
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select '';
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select 'String', blockSerializedSize('foo');
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select 'FixedString(32)', blockSerializedSize(cast('foo', 'FixedString(32)'));
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select '';
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select 'Enum8', blockSerializedSize(cast('a' as Enum8('a' = 1, 'b' = 2)));
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select '';
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select 'Array', blockSerializedSize(['foo']);
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select '';
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select 'uniqCombinedState(100)', blockSerializedSize(uniqCombinedState(number)) from (select number from system.numbers limit 100);
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select 'uniqCombinedState(10000)', blockSerializedSize(uniqCombinedState(number)) from (select number from system.numbers limit 10000);
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select 'uniqCombinedState(100000)', blockSerializedSize(uniqCombinedState(number)) from (select number from system.numbers limit 100000);
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select 'uniqCombinedState(1000000)', blockSerializedSize(uniqCombinedState(number)) from (select number from system.numbers limit 1000000);
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select 'uniqCombinedState(10000000)', blockSerializedSize(uniqCombinedState(number)) from (select number from system.numbers limit 10000000);
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select 'uniqCombined64State(10000000)', blockSerializedSize(uniqCombined64State(number)) from (select number from system.numbers limit 10000000);
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select '';
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select 'String,UInt8', blockSerializedSize('foo', 1);
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select '';
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select 'Block(UInt32)', blockSerializedSize(number) from numbers(2);
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