I am using psql (9.5.2) and postgis 2.2.2. In the psql shell, I have created a spatial database and connected to it. I want to insert a point into the postgis geodatabase.

To do so, I first create a table in the database:

CREATE TABLE table1 ( 


Then I want to create a point using:

select st_point(­101, 20);

However, I got an error:

ERROR:  column "­101" does not exist

What is the reason of this error?

  • 1
    Is PostGIS installed, check with select postgis_version(). For some reason, if I copy-paste your SQL I am getting the same error but if I write the text from the keyboard the query is successful.
    – user30184
    Apr 17, 2016 at 17:20
  • Have you tried ST_Point? Commands might be case-sensitive.
    – AndreJ
    Apr 17, 2016 at 17:27
  • That really works. The prompt returned "st_point -------------------------------------------- 010100000000000000004059400000000000003440 (1 row)". But I was expecting the st_point function to return the coordinate values. Do you have the same return result?
    – enaJ
    Apr 17, 2016 at 17:27
  • 1
    It gives error too for me if I copy paste. it's the -- is not really a minus coming thru. I had to replace the -- with a - and then it worked.
    – LR1234567
    Apr 17, 2016 at 17:57
  • 2
    The default return value is a hexadecimal dump of the binary object. You need to use ST_AsText(geomcol) to get Well-Known Text.
    – Vince
    Apr 17, 2016 at 18:35

1 Answer 1


You have a hidden soft hyphen character before 101, e.g. copy & paste into a Python shell shows me:

select st_point(\xc2\xad101, 20);

Retype this SQL statement using ASCII characters, and it should work.

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