I installed PostgreSQL 9.6, PostGIS 2.3.1 and Pgadmin III on my computer, and I was reading the documentation, so I thought that would be a great idea see the function on practice and then modifie them to learn a little bit, but the most SQL codes that I see on documentation doesn't work if I put them on pgadmin3, for example on the page 130 in postgis's documentation (http://postgis.net/stuff/postgis-2.3.pdf) there is the following statement:
SELECT ST_MLineFromText(’MULTILINESTRING((1 2, 3 4), (4 5, 6 7))’);
When I put it on pgadmin3, I receive an error that says:
Error of sintax in or next to "2". LINE 1: SELECT ST_MLineFromText(’MULTILINESTRING((1 2, 3 4), (4 5, 6... ^ ********** Error ********** ERROR: error sintax in or next to "2" SQL state: 42601 Character: 45
By the way: I'm using Debian Sid
Sorry if it's a dumb question, I'm a newbie in spatial databases.