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@ -98,6 +98,8 @@ Block ConvertingBlockInputStream::readImpl()
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return src;
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return src;
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Block res = header.cloneEmpty();
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Block res = header.cloneEmpty();
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/// This is important because header.cloneEmpty() doesn't copy info about aggregation bucket.
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/// Otherwise information in buckets may be lost (and aggregation will return wrong result).
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res.info = src.info;
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res.info = src.info;
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for (size_t res_pos = 0, size = conversion.size(); res_pos < size; ++res_pos)
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for (size_t res_pos = 0, size = conversion.size(); res_pos < size; ++res_pos)
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