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57 lines
3.0 KiB
SQL
57 lines
3.0 KiB
SQL
-- Tags: no-fasttest
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DROP TABLE IF EXISTS h3_indexes;
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CREATE TABLE h3_indexes (id int, start String, end String) ENGINE = Memory;
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-- test values taken from h3 library test suite
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INSERT INTO h3_indexes VALUES (1, '830631fffffffff','830780fffffffff');
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INSERT INTO h3_indexes VALUES (2, '830631fffffffff','830783fffffffff');
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INSERT INTO h3_indexes VALUES (3, '830631fffffffff','83079dfffffffff');
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INSERT INTO h3_indexes VALUES (4, '830631fffffffff','830799fffffffff');
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INSERT INTO h3_indexes VALUES (5, '830631fffffffff','8306f5fffffffff');
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INSERT INTO h3_indexes VALUES (6, '830631fffffffff','8306e6fffffffff');
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INSERT INTO h3_indexes VALUES (7, '830631fffffffff','8306e4fffffffff');
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INSERT INTO h3_indexes VALUES (8, '830631fffffffff','830701fffffffff');
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INSERT INTO h3_indexes VALUES (9, '830631fffffffff','830700fffffffff');
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INSERT INTO h3_indexes VALUES (10, '830631fffffffff','830706fffffffff');
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INSERT INTO h3_indexes VALUES (11, '830631fffffffff','830733fffffffff');
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INSERT INTO h3_indexes VALUES (12, '8301a6fffffffff','830014fffffffff');
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INSERT INTO h3_indexes VALUES (13, '8301a6fffffffff','830033fffffffff');
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INSERT INTO h3_indexes VALUES (14, '8301a6fffffffff','830031fffffffff');
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INSERT INTO h3_indexes VALUES (15, '8301a6fffffffff','830022fffffffff');
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INSERT INTO h3_indexes VALUES (16, '8301a6fffffffff','830020fffffffff');
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INSERT INTO h3_indexes VALUES (17, '8301a6fffffffff','830024fffffffff');
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INSERT INTO h3_indexes VALUES (18, '8301a6fffffffff','830120fffffffff');
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INSERT INTO h3_indexes VALUES (19, '8301a6fffffffff','830124fffffffff');
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INSERT INTO h3_indexes VALUES (20, '8301a6fffffffff','8308cdfffffffff');
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INSERT INTO h3_indexes VALUES (21, '8301a5fffffffff','831059fffffffff');
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INSERT INTO h3_indexes VALUES (22, '8301a5fffffffff','830b2dfffffffff');
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INSERT INTO h3_indexes VALUES (23, '8301a5fffffffff','830b29fffffffff');
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INSERT INTO h3_indexes VALUES (24, '8301a5fffffffff','830b76fffffffff');
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INSERT INTO h3_indexes VALUES (25, '8301a5fffffffff','830b43fffffffff');
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INSERT INTO h3_indexes VALUES (26, '8301a5fffffffff','830b4efffffffff');
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INSERT INTO h3_indexes VALUES (27, '8301a5fffffffff','830b48fffffffff');
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INSERT INTO h3_indexes VALUES (28, '8301a5fffffffff','830b49fffffffff');
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/*
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Given two H3 indexes, return the line of indexes between them (inclusive).
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This function may fail to find the line between two indexes, for example if they are very far apart.
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It may also fail when finding distances for indexes on opposite sides of a pentagon.
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Notes:
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The specific output of this function should not be considered stable across library versions.
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The only guarantees the library provides are that the line length will be h3Distance(start, end) + 1
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and that every index in the line will be a neighbor of the preceding index.
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Lines are drawn in grid space, and may not correspond exactly to either Cartesian lines or great arcs.
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https://h3geo.org/docs/api/traversal
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*/
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SELECT length(h3Line(stringToH3(start), stringToH3(end))) FROM h3_indexes ORDER BY id;
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SELECT h3Line(0xffffffffffffff, 0xffffffffffffff); -- { serverError 117 }
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DROP TABLE h3_indexes;
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