GET_X¶

The GET_X function returns the x-coordinate of a given POINT data type. It takes one POINT data type argument and returns a FLOAT value representing the x-coordinate.

Syntax¶

GET_X(point)

Parameters:

point: The geographical coordinate of type Point from which the X-coordinate will be extracted.

Examples¶

Consider the following table PointGroup:

CREATE TABLE PointGroup (
    point_field POINT
);

With the following data:

INSERT INTO PointGroup VALUES (POINT(0.3134, 0.156));

Example 1: Get the X-coordinate from a point¶

SELECT GET_X(point_field) AS point_field FROM PointGroup;

Result:

point_field
0.3134

Example 2: Get the X-coordinate from a point using CAST¶

SELECT GET_X(CAST('POINT(0.1 -0.2)' AS POINT)) AS ptx;

Result:

ptx
0.1

Example 3: Get the X-coordinate from a point using POINT function¶

SELECT GET_X(POINT(0.1, -0.2)) AS ptx;

Result:

ptx
0.1

Errors¶

If the argument is not of type Point, a FunctionRequiresPointValue error will be thrown.