How to find the connection line

Hello

I have a spatial table with geom type in 2002.

I have a set of line (for example say it's 5 rows) attach image.

I need to find the line that is internal linking to these 5 rows. I mean, it's a dividing line has the inside line.

I am unable to get the inner lines of a border.

If I have a spatial query table I get limit but I want inner lines.

Fix is instant for ref.example.jpg

Thanks in advance

Saaz

This is because CONCAT_LINES does not create a polygon, it only concatenates lines in a new line. But always a line (even if the endpoint and the starting point of this line may be the same).

It might be a good idea to start reading the Documentation space: content, since it seems that there are some concepts in Oracle Spatial, which are not clear to you. Basically: there is no simple easy feature to create a polygon of a bunch of lines delivered with Oracle, you will need to create one yourself.

Concat_lines might be a start, however, that allows to create a line, then check the endpoint and the starting point: if they are identical, you can create your polygon. Is they are not the same, you can copy the starting at the end point. You can then change the GTYPE and the Ansdo_elem_info so that the entire element becomes a polygon. With a polygon you can use inside effectively to get the results you want. I don't have access to my environment of development here, so can't help you build something right now. But maybe someone else has something already?

Oh, and after the fact: do not store your polygons in a temporary table, but change your datamodel and begin to use them properly. Temporary tables will be only complicate things more.

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