51.52. pg_statistic_ext_data

The catalog pg_statistic_ext_data holds data for extended planner statistics defined in pg_statistic_ext. Each row in this catalog corresponds to a statistics object created with CREATE STATISTICS.

Table 51.52. pg_statistic_ext_data Columns

stxoidoidpg_statistic_ext.oidExtended statistic containing the definition for this data.
stxdndistinctpg_ndistinct  N-distinct counts, serialized as pg_ndistinct type
stxddependenciespg_dependencies  Functional dependency statistics, serialized as pg_dependencies type
stxdmcvpg_mcv_list  MCV (most-common values) list statistics, serialized as pg_mcv_list type.