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		return $osmIdsInClause;
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		return $osmIdsInClause;
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	}
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	}
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	private function construireRequeteUnion() {
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	private function construireRequeteUnion() {
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		$requeteTpl = 'SELECT osm_id, '.
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		$requeteTpl = 'SELECT osm_id, '.
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			"(($this->lon - X(centre)) * ($this->lon -X(centre)) + ($this->lat - Y(centre)) * ($this->lat - Y(centre))) AS distance ".
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			"(($this->lon - centre_lng) * ($this->lon -centre_lng) + ($this->lat - centre_lat) * ($this->lat - centre_lat)) AS distance ".
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			'FROM osm_zones_admin '.
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			'FROM osm_zones_admin '.
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			'WHERE niveau = %s '.
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			'WHERE niveau = %s '.
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			'ORDER BY distance ASC '.
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			'ORDER BY distance ASC '.
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			"LIMIT %s ";
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			"LIMIT %s ";