Hi Denis, You have a typo on your query. In order to create a LineString geometry from text you should the function linefromtext or geomfromtext.
SELECT forests.name,buildings.name FROM forests,buildings WHERE "Intersect"(buildings.outline, LineFromText('LINESTRING(53.9 29.9, 53.0 29.0)', 0)) = true;
or
SELECT forests.name,buildings.name FROM forests,buildings WHERE "Intersect"(buildings.outline, GeomFromText('LINESTRING(53.9 29.9, 53.0 29.0)', 0)) = true;
You can also check out which similar function are available by executing the following query:
SELECT * FROM functions WHERE mod='geom' AND name LIKE '%fromtext%';
Cheers, Kostis
On 15-06-15 10:26, Dennis Wiest wrote:
Hello,
I have a question for Geomodul. Is it possible to execute the following query with a LineString.
This is myquery with a point and the sample data set from the documentation.
SELECT forests.name,buildings.name FROM forests,buildings WHERE "Intersect"(buildings.outline, Point(53.9,29.9)) = true;
Now I want toreplace the Pointwith aLineString like this in mysql.
SELECT forests.name,buildings.name FROM forests,buildings WHERE "Intersect"(buildings.outline, LineString(Point(53.9,29.9), Point(53.0, 29.0))) = true;
TestDatabase
CREATE TABLE forests(id INT,name TEXT,shape MULTIPOLYGON);
CREATE TABLE buildings(id INT,name TEXT,location POINT,outline POLYGON);
INSERT INTO forests VALUES(109, 'Green Forest',
'MULTIPOLYGON( ((28 26,28 0,84 0,84 42,28 26), (52 18,66 23,73 9,48 6,52 18)), ((59 18,67 18,67 13,59 13,59 18)))');
INSERT INTO buildings VALUES(113, '123 Main Street',
'POINT( 52 30 )', 'POLYGON( ( 50 31, 54 31, 54 29, 50 29, 50 31) )');INSERT INTO buildings VALUES(114, '215 Main Street',
'POINT( 64 33 )', 'POLYGON( ( 66 34, 62 34, 62 32, 66 32, 66 34) )');SELECT forests.name,buildings.name
FROM forests,buildings
WHERE forests.name = 'Green Forest' and
Overlaps(forests.shape, buildings.outline) = true;many thanks
Dennis
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