Skip record decoding in read_mmdb() if fields are not used#14
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Queries such as "SELECT network" and "SELECT count(*)" don't actually need records to be decoded, so we can get x3.5 speed up (measured on GeoLite2-City ~5.5M rows).
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Queries such as "SELECT network" and "SELECT count(*)" don't actually need records to be decoded, so we can get x3.5 speed up (measured on GeoLite2-City ~5.5M rows).