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MySQL 5.6 Reference Manual
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Excerpts from this Manual

12.15.7.2 Point Property Functions

A Point consists of X and Y coordinates, which may be obtained using the following functions:

  • ST_X(p)

    Returns the X-coordinate value for the Point object p as a double-precision number.

    mysql> SELECT ST_X(Point(56.7, 53.34));
    +--------------------------+
    | ST_X(Point(56.7, 53.34)) |
    +--------------------------+
    |                     56.7 |
    +--------------------------+

    ST_X() and X() are synonyms.

  • ST_Y(p)

    Returns the Y-coordinate value for the Point object p as a double-precision number.

    mysql> SELECT ST_Y(Point(56.7, 53.34));
    +--------------------------+
    | ST_Y(Point(56.7, 53.34)) |
    +--------------------------+
    |                    53.34 |
    +--------------------------+

    ST_Y() and Y() are synonyms.

  • X(p)

    ST_X() and X() are synonyms. For more information, see the description of ST_X().

  • Y(p)

    ST_Y() and Y() are synonyms. For more information, see the description of ST_Y().


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