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Help with an interesting Postgres question: Why isn't an Index Only Scan used on a partition accessed via the parent table?.
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{{mdb,http://standards.iso.org/iso/19115/-3/mdb/2.0},{cat,http://standards.iso.org/iso/19115/-3/cat/1.0},{gfc,http://standards.iso.org/iso/19110/gfc/1.1},{cit,http://standards.iso.org/iso/19115/-3/cit/2.0},{gcx,http://standards.iso.org/iso/19115/-3/gcx/1.0},{gex,http://standards.iso.org/iso/19115/-3/gex/1.0},{lan,http://standards.iso.org/iso/19115/-3/lan/1.0},{srv,http://standards.iso.org/iso/19115/-3/srv/2.1},{mas,http://standards.iso.org/iso/19115/-3/mas/1.0},{mcc,http://standards.iso.org/iso/19115/-3/mcc/1.0},{mco,http://standards.iso.org/iso/19115/-3/mco/1.0},{mda,http://standards.iso.org/iso/19115/-3/mda/1.0},{mds,http://standards.iso.org/iso/19115/-3/mds/2.0},{mdt,http://standards.iso.org/iso/19115/-3/mdt/2.0},{mex,http://standards.iso.org/iso/19115/-3/mex/1.0},{mmi,http://standards.iso.org/iso/19115/-3/mmi/1.0},{mpc,http://standards.iso.org/iso/19115/-3/mpc/1.0},{mrc,http://standards.iso.org/iso/19115/-3/mrc/2.0},{mrd,http://standards.iso.org/iso/19115/-3/mrd/1.0},{mri,http://standards.iso.org/iso/19115/-3/mri/1.0},{mrl,http://standards.iso.org/iso/19115/-3/mrl/2.0},{mrs,http://standards.iso.org/iso/19115/-3/mrs/1.0},{msr,http://standards.iso.org/iso/19115/-3/msr/2.0},{mdq,http://standards.iso.org/iso/19157/-2/mdq/1.0},{mac,http://standards.iso.org/iso/19115/-3/mac/2.0},{gco,http://standards.iso.org/iso/19115/-3/gco/1.0},{gml,http://www.opengis.net/gml/3.2},{xlink,http://www.w3.org/1999/xlink},{xsi,http://www.w3.org/2001/XMLSchema-instance}} |
SELECT 1