>    ST_GeomFromText('POINT( ? ? )')

To make my argument clearer: this 'POINT( ? ? )' might look like an SQL function but it's a string which is parsed by ST_GeomFromText() !

Please note the missing commas, too. Function arguments in SQL are comma separated.

The MariaDB documentation calls the argument a WKT with T for Text! °

WKT is not SQL, pretty much like SQL is not Perl

Your string passed here to ST_GeomFromText() will always include literal question marks in your example.

There is nothing like ? placeholder handling inside strings in SQL!

The error you get will be along the line "too many arguments for placeholders" because the two ? inside a string are just ignored.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

°) The Well-Known Text (WKT) representation of Geometry is designed to exchange geometry data in ASCII form

update

In reply to Re^3: DBI placeholders for spatial data by LanX
in thread DBI placeholders for spatial data by Bod

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.