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C comment: adjust statistics mention
No need to talk about the statistics collector. Discussion: https://postgr.es/m/8a82417cdb6e8038fe276d4960e3207a@oss.nttdata.com Author: Álvaro Herrera Backpatch-through: master
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@ -178,7 +178,7 @@ DECLARE_FOREIGN_KEY((starelid, staattnum), pg_attribute, (attrelid, attnum));
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* the K most common non-null values appearing in the column, and stanumbers
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* contains their frequencies (fractions of total row count). The values
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* shall be ordered in decreasing frequency. Note that since the arrays are
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* variable-size, K may be chosen by the statistics collector. Values should
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* variable-size, K may be chosen may be chosen at ANALYZE time. Values should
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* not appear in MCV unless they have been observed to occur more than once;
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* a unique column will have no MCV slot.
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*/
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