How to query geography data type?

Question

Hello
In my db i create table having geography type column and insert location detail (lat & lon) using point method. How can i do query for getting that location in my console application?
and also i try this got an error?

Answer 1

It looks like you chose one line (the one beginning with "set") and ran it, stand-alone, in an SSMS query window. You need to run all 3 lines of code (i.e don't select any particular line, and hit the Run button). Or select all 3 lines and hit
the Run button.
What the error message says is that you are trying to use the variable @g without defining it. This could only mean that you're running only line 2 (the highlighted line).
The lifetime of a SQL variable (@g) is one-batch long, a variable goes out of scope at the end of the batch. So running each line as a separate batch won't work with SSMS. You need to run them all at once.
Cheers, Bob