config root man

use test;
drop function if exists a;
drop function if exists x;
drop function if exists y;
create function a() returns int
return 1;
create function x() returns int
return 2;
Warnings:
Note	1585	This function 'x' has the same name as a native function
create function y() returns int
return 3;
Warnings:
Note	1585	This function 'y' has the same name as a native function
select a();
a()
1
select x();
ERROR 42000: Incorrect parameter count in the call to native function 'x'
select y();
ERROR 42000: Incorrect parameter count in the call to native function 'y'
select ST_x(ST_PointFromText("POINT(10 20)")), ST_y(ST_PointFromText("POINT(10 20)"));
ST_x(ST_PointFromText("POINT(10 20)"))	ST_y(ST_PointFromText("POINT(10 20)"))
10	20
select test.a(), test.x(), test.y();
test.a()	test.x()	test.y()
1	2	3
drop function a;
drop function x;
drop function y;