mirror of
https://git.osgeo.org/gitea/postgis/postgis
synced 2024-10-24 17:12:35 +00:00
52 lines
1.5 KiB
SQL
52 lines
1.5 KiB
SQL
select 1, valid, reason, st_astext(location) FROM (
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SELECT (ST_IsValidDetail('LINESTRING (70 250, 190 340)')).*
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) foo;
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select 2, valid, reason, st_astext(location) FROM (
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SELECT (ST_IsValidDetail('LINESTRING (70 250, 70 250)')).*
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) foo;
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-- Twisted polygon
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select 3, valid, reason, st_astext(location) FROM (
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SELECT (ST_IsValidDetail(
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'POLYGON ((70 250, 70 500, 80 400, 40 400, 70 250))'
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)).*
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) foo;
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-- Twisted polygon is also invalid for ESRI
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select 4, valid, reason, st_astext(location) FROM (
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SELECT (ST_IsValidDetail(
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'POLYGON ((70 250, 70 500, 80 400, 40 400, 70 250))'
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,
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1 -- ESRI flag
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)).*
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) foo;
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-- Self-touching ring forming hole
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select 5, valid, reason, st_astext(location) FROM (
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SELECT (ST_IsValidDetail(
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'POLYGON ((70 250, 40 500, 100 400, 70 250, 80 350, 60 350, 70 250))'
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,
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0 -- No flags
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)).*
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) foo;
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select '5s', ST_IsValid(
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'POLYGON ((70 250, 40 500, 100 400, 70 250, 80 350, 60 350, 70 250))' , 0);
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select '5r', ST_IsValidReason(
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'POLYGON ((70 250, 40 500, 100 400, 70 250, 80 350, 60 350, 70 250))' , 0);
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-- Self-touching ring forming hole with ESRI flag
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select 6, valid, reason, st_astext(location) FROM (
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SELECT (ST_IsValidDetail(
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'POLYGON ((70 250, 40 500, 100 400, 70 250, 80 350, 60 350, 70 250))'
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,
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1 -- ESRI flag
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)).*
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) foo;
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select '6s', ST_IsValid(
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'POLYGON ((70 250, 40 500, 100 400, 70 250, 80 350, 60 350, 70 250))' , 1);
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select '5r', ST_IsValidReason(
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'POLYGON ((70 250, 40 500, 100 400, 70 250, 80 350, 60 350, 70 250))' , 1);
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