[postgis-users] MULTILINESTRING edges

[Nandorov]

hi again, i'm sorry if i bother you, but i need some help

I have a multilinestring, and i want to get the coordinates of its edges.
For example i have
MULTILINESTRING(0 1, 2 3, 6 7,4 6) i want to recover its edges that would be 
(0 1) and (4 6)
X & Y function only works with points, if there's a function to get them? or
i have to build my own?

thanks
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