SQL Server - how to get meter of STDistance() or STLength()?












0















How to get meter of STDistance() or STLength()?



I use



linestring(x y z, x y z, x y z, ...).STLength() //
point(x y).STDistance(point(x y))


but object has 0 of SRID...can I get meter length?










share|improve this question




















  • 1





    Welcome! Which coordinate system are you using for x y z ?

    – ajayel
    Nov 27 '18 at 22:11











  • yes i use x y z

    – 손의범
    Nov 27 '18 at 22:34











  • which units are you using ?

    – ajayel
    Nov 28 '18 at 1:26











  • the metric system(cm, m, km...)

    – 손의범
    Nov 28 '18 at 2:28













  • Are you using the geometry or geography data type? For the former, it's up to you to know what units your coordinates are expressed in. For the latter, the SRID has a native unit of length (which you can look up in sys.spatial_reference_systems).

    – Ben Thul
    Nov 28 '18 at 17:11
















0















How to get meter of STDistance() or STLength()?



I use



linestring(x y z, x y z, x y z, ...).STLength() //
point(x y).STDistance(point(x y))


but object has 0 of SRID...can I get meter length?










share|improve this question




















  • 1





    Welcome! Which coordinate system are you using for x y z ?

    – ajayel
    Nov 27 '18 at 22:11











  • yes i use x y z

    – 손의범
    Nov 27 '18 at 22:34











  • which units are you using ?

    – ajayel
    Nov 28 '18 at 1:26











  • the metric system(cm, m, km...)

    – 손의범
    Nov 28 '18 at 2:28













  • Are you using the geometry or geography data type? For the former, it's up to you to know what units your coordinates are expressed in. For the latter, the SRID has a native unit of length (which you can look up in sys.spatial_reference_systems).

    – Ben Thul
    Nov 28 '18 at 17:11














0












0








0








How to get meter of STDistance() or STLength()?



I use



linestring(x y z, x y z, x y z, ...).STLength() //
point(x y).STDistance(point(x y))


but object has 0 of SRID...can I get meter length?










share|improve this question
















How to get meter of STDistance() or STLength()?



I use



linestring(x y z, x y z, x y z, ...).STLength() //
point(x y).STDistance(point(x y))


but object has 0 of SRID...can I get meter length?







sql-server






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 28 '18 at 5:59









marc_s

580k13011191267




580k13011191267










asked Nov 27 '18 at 21:59









손의범손의범

11




11








  • 1





    Welcome! Which coordinate system are you using for x y z ?

    – ajayel
    Nov 27 '18 at 22:11











  • yes i use x y z

    – 손의범
    Nov 27 '18 at 22:34











  • which units are you using ?

    – ajayel
    Nov 28 '18 at 1:26











  • the metric system(cm, m, km...)

    – 손의범
    Nov 28 '18 at 2:28













  • Are you using the geometry or geography data type? For the former, it's up to you to know what units your coordinates are expressed in. For the latter, the SRID has a native unit of length (which you can look up in sys.spatial_reference_systems).

    – Ben Thul
    Nov 28 '18 at 17:11














  • 1





    Welcome! Which coordinate system are you using for x y z ?

    – ajayel
    Nov 27 '18 at 22:11











  • yes i use x y z

    – 손의범
    Nov 27 '18 at 22:34











  • which units are you using ?

    – ajayel
    Nov 28 '18 at 1:26











  • the metric system(cm, m, km...)

    – 손의범
    Nov 28 '18 at 2:28













  • Are you using the geometry or geography data type? For the former, it's up to you to know what units your coordinates are expressed in. For the latter, the SRID has a native unit of length (which you can look up in sys.spatial_reference_systems).

    – Ben Thul
    Nov 28 '18 at 17:11








1




1





Welcome! Which coordinate system are you using for x y z ?

– ajayel
Nov 27 '18 at 22:11





Welcome! Which coordinate system are you using for x y z ?

– ajayel
Nov 27 '18 at 22:11













yes i use x y z

– 손의범
Nov 27 '18 at 22:34





yes i use x y z

– 손의범
Nov 27 '18 at 22:34













which units are you using ?

– ajayel
Nov 28 '18 at 1:26





which units are you using ?

– ajayel
Nov 28 '18 at 1:26













the metric system(cm, m, km...)

– 손의범
Nov 28 '18 at 2:28







the metric system(cm, m, km...)

– 손의범
Nov 28 '18 at 2:28















Are you using the geometry or geography data type? For the former, it's up to you to know what units your coordinates are expressed in. For the latter, the SRID has a native unit of length (which you can look up in sys.spatial_reference_systems).

– Ben Thul
Nov 28 '18 at 17:11





Are you using the geometry or geography data type? For the former, it's up to you to know what units your coordinates are expressed in. For the latter, the SRID has a native unit of length (which you can look up in sys.spatial_reference_systems).

– Ben Thul
Nov 28 '18 at 17:11












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