PostgreSQL 16.1 Documentationyet in production. Values that are very similar, completely random, or inserted in sorted order will skew the statistics away from the distribution that real data would have. • When indexes are not used authentication exchange, but using the channel_binding=require connection parameter provides a mitigation against server spoofing. An attacker that uses a rogue server to intercept a SCRAM exchange can time delta between accesses to individual statistics can lead to significant skew in the cached statistics. To minimize skew, stats_fetch_consistency can be set to snapshot, at the price of increased memory0 码力 | 3133 页 | 14.10 MB | 1 年前3
PostgreSQL 16.1 Documentationyet in production. Values that are very similar, completely random, or inserted in sorted order will skew the statistics away from the distribution that real data would have. • When indexes are not used authentication exchange, but using the channel_binding=require con- nection parameter provides a mitigation against server spoofing. An attacker that uses a rogue server to intercept a SCRAM exchange can time delta between accesses to individual statis- tics can lead to significant skew in the cached statistics. To minimize skew, stats_fetch_con- sistency can be set to snapshot, at the price of increased0 码力 | 2974 页 | 14.22 MB | 1 年前3
PostgreSQL 17beta1 A4 Documentationyet in production. Values that are very similar, completely random, or inserted in sorted order will skew the statistics away from the distribution that real data would have. • When indexes are not used authentication exchange, but using the channel_binding=require con- nection parameter provides a mitigation against server spoofing. An attacker that uses a rogue server to intercept a SCRAM exchange can time delta between accesses to individual statis- tics can lead to significant skew in the cached statistics. To minimize skew, stats_fetch_con- sistency can be set to snapshot, at the price of increased0 码力 | 3017 页 | 14.45 MB | 1 年前3
PostgreSQL 17beta1 US Documentationyet in production. Values that are very similar, completely random, or inserted in sorted order will skew the statistics away from the distribution that real data would have. • When indexes are not used authentication exchange, but using the channel_binding=require connection parameter provides a mitigation against server spoofing. An attacker that uses a rogue server to intercept a SCRAM exchange can time delta between accesses to individual statistics can lead to significant skew in the cached statistics. To minimize skew, stats_fetch_consistency can be set to snapshot, at the price of increased memory0 码力 | 3188 页 | 14.32 MB | 1 年前3
PostgreSQL 15.5 Documentationyet in production. Values that are very similar, completely random, or inserted in sorted order will skew the statistics away from the distribution that real data would have. • When indexes are not used time delta between accesses to individual statis- tics can lead to significant skew in the cached statistics. To minimize skew, stats_fetch_con- sistency can be set to snapshot, at the price of increased be correlated with other data such as IDs from a sequence or the physical row order- ing, which may skew performance measurements. To avoid this, you may wish to use the permute function, or some other0 码力 | 2910 页 | 13.60 MB | 1 年前3
PostgreSQL 15.5 Documentationyet in production. Values that are very similar, completely random, or inserted in sorted order will skew the statistics away from the distribution that real data would have. • When indexes are not used time delta between accesses to individual statistics can lead to significant skew in the cached statistics. To minimize skew, stats_fetch_consistency can be set to snapshot, at the price of increased memory be correlated with other data such as IDs from a sequence or the physical row ordering, which may skew performance measurements. To avoid this, you may wish to use the permute function, or some other0 码力 | 3073 页 | 13.49 MB | 1 年前3
PostgreSQL 8.0 Documentationproduction use yet. Values that are very similar, completely random, or inserted in sorted order will skew the statistics away from the distribution that real data would have. • When indexes are not used0 码力 | 1422 页 | 9.92 MB | 1 年前3
PostgreSQL 8.0 Documentationproduction use yet. Values that are very similar, completely random, or inserted in sorted order will skew the statistics away from the distribution that real data would have. • When indexes are not used0 码力 | 1332 页 | 9.76 MB | 1 年前3
PostgreSQL 8.1.11 Documentationproduction use yet. Values that are very similar, completely random, or inserted in sorted order will skew the statistics away from the distribution that real data would have. • When indexes are not used0 码力 | 1582 页 | 12.19 MB | 1 年前3
PostgreSQL 8.1 Documentationproduction use yet. Values that are very similar, completely random, or inserted in sorted order will skew the statistics away from the distribution that real data would have. • When indexes are not used0 码力 | 1548 页 | 11.54 MB | 1 年前3
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