Use "'" not '"'

Author: lostbard

inst/@octave_sqlite/sqlupdate.m

@@ -133,7 +133,7 @@ function sqlupdate (db, tablename, data, filter, varargin)
       if isnumeric(v)
          v = num2str(v);
       else
-         v = ['"' v '"'];
+         v = ["'" v "'"];
       endif
 
     sql = [sql cols{col} " = " v];

inst/@octave_sqlite/sqlwrite.m

@@ -145,7 +145,7 @@ function sqlwrite (db, tablename, data, varargin)
       if isnumeric(v)
          v = num2str(v);
       else
-         v = ['"' v '"'];
+         v = ["'" v "'"];
       endif
       values = [values v];