I could check the sql query for the existence of the sub-string " RETURNING ", but we can all imaging when this will fail.
You should not test whether the query contains the word "RETURNING", but if it contains the token "RETURNING".

You can test that by properly tokenizing the string and see if one of the tokens is the word "RETURNING".

One practical approach for tokenizing (or "lexing") SQL queries has been described by Ovid in his perl.com article "lexing your data".

To speed it up when repeated often, you might reconsider caching ("memoizing") the results for the tokenization, just like DBIx::Simple does for caching SQL prepared statement handles: basically, you use a hash with the SQL statement string as the hash key.

In reply to Re: How to detect postgresql RETURNING usage by bart
in thread How to detect postgresql RETURNING usage by Roland684

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.