"Ioseph Kim" <[EMAIL PROTECTED]> writes: > when @-@ operator used at path type, > below query maybe returns 1. > because this path is just line.
No, because it's a closed path, so it's a loop from (0,0) to (1,0)
and back again. If you don't want to count the return segment,
use an open path.
regards, tom lane
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TIP 6: explain analyze is your friend
