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6d07cbc509
Commit ac9099fc1 rearranged the logic in spgGetCache() that determines the index's attType (nominal input data type) and leafType (actual type stored in leaf index tuples). Turns out this broke things for the case where (a) the actual input data type is different from the nominal type, (b) the opclass's config function leaves leafType defaulted, and (c) the opclass has no "compress" function. (b) caused us to assign the actual input data type as leafType, and then since that's not attType, we complained that a "compress" function is required. For non-polymorphic opclasses, condition (a) arises in binary-compatible cases, such as using SP-GiST text_ops for a varchar column, or using any opclass on a domain over its nominal input type. To fix, use attType for leafType when the index's declared column type is different from but binary-compatible with attType. Do this only in the defaulted-leafType case, to avoid overriding any explicit selection made by the opclass. Per bug #17294 from Ilya Anfimov. Back-patch to v14. Discussion: https://postgr.es/m/17294-8f6c7962ce877edc@postgresql.org
83 lines
3.2 KiB
SQL
83 lines
3.2 KiB
SQL
--
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-- Test SP-GiST indexes.
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--
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-- There are other tests to test different SP-GiST opclasses. This is for
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-- testing SP-GiST code itself.
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create table spgist_point_tbl(id int4, p point);
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create index spgist_point_idx on spgist_point_tbl using spgist(p) with (fillfactor = 75);
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-- Test vacuum-root operation. It gets invoked when the root is also a leaf,
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-- i.e. the index is very small.
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insert into spgist_point_tbl (id, p)
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select g, point(g*10, g*10) from generate_series(1, 10) g;
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delete from spgist_point_tbl where id < 5;
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vacuum spgist_point_tbl;
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-- Insert more data, to make the index a few levels deep.
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insert into spgist_point_tbl (id, p)
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select g, point(g*10, g*10) from generate_series(1, 10000) g;
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insert into spgist_point_tbl (id, p)
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select g+100000, point(g*10+1, g*10+1) from generate_series(1, 10000) g;
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-- To test vacuum, delete some entries from all over the index.
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delete from spgist_point_tbl where id % 2 = 1;
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-- And also delete some concentration of values. (SP-GiST doesn't currently
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-- attempt to delete pages even when they become empty, but if it did, this
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-- would exercise it)
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delete from spgist_point_tbl where id < 10000;
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vacuum spgist_point_tbl;
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-- Test rescan paths (cf. bug #15378)
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-- use box and && rather than point, so that rescan happens when the
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-- traverse stack is non-empty
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create table spgist_box_tbl(id serial, b box);
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insert into spgist_box_tbl(b)
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select box(point(i,j),point(i+s,j+s))
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from generate_series(1,100,5) i,
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generate_series(1,100,5) j,
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generate_series(1,10) s;
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create index spgist_box_idx on spgist_box_tbl using spgist (b);
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select count(*)
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from (values (point(5,5)),(point(8,8)),(point(12,12))) v(p)
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where exists(select * from spgist_box_tbl b where b.b && box(v.p,v.p));
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-- The point opclass's choose method only uses the spgMatchNode action,
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-- so the other actions are not tested by the above. Create an index using
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-- text opclass, which uses the others actions.
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create table spgist_text_tbl(id int4, t text);
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create index spgist_text_idx on spgist_text_tbl using spgist(t);
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insert into spgist_text_tbl (id, t)
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select g, 'f' || repeat('o', 100) || g from generate_series(1, 10000) g
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union all
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select g, 'baaaaaaaaaaaaaar' || g from generate_series(1, 1000) g;
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-- Do a lot of insertions that have to split an existing node. Hopefully
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-- one of these will cause the page to run out of space, causing the inner
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-- tuple to be moved to another page.
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insert into spgist_text_tbl (id, t)
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select -g, 'f' || repeat('o', 100-g) || 'surprise' from generate_series(1, 100) g;
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-- Test out-of-range fillfactor values
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create index spgist_point_idx2 on spgist_point_tbl using spgist(p) with (fillfactor = 9);
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create index spgist_point_idx2 on spgist_point_tbl using spgist(p) with (fillfactor = 101);
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-- Modify fillfactor in existing index
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alter index spgist_point_idx set (fillfactor = 90);
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reindex index spgist_point_idx;
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-- Test index over a domain
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create domain spgist_text as varchar;
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create table spgist_domain_tbl (f1 spgist_text);
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create index spgist_domain_idx on spgist_domain_tbl using spgist(f1);
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insert into spgist_domain_tbl values('fee'), ('fi'), ('fo'), ('fum');
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explain (costs off)
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select * from spgist_domain_tbl where f1 = 'fo';
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select * from spgist_domain_tbl where f1 = 'fo';
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