i once wanted to to this:

SELECT
 events.b_g
FROM
 events
WHERE
 events.b_g NOT IN ( SELECT otf.b_g FROM otf )
AND
 events.b_g NOT IN ( SELECT requests.b_g FROM requests)

[download]

and this...

...
WHERE
 events.b_g IN ( SELECT otf.b_g FROM otf )
OR
 events.b_g IN ( SELECT requests.b_g FROM requests )
...

[download]

instead i had to do this:

SELECT
 events.b_g,
 events.vector,
 SUM(tries) AS 'attempts',
 COUNT(DISTINCT events.observer) AS 'reporters'
FROM
 events

LEFT JOIN otf      ON events.b_g = otf.b_g
LEFT JOIN requests ON events.b_g = requests.b_g
WHERE
 requests.b_g IS NULL
AND
      otf.b_g IS NULL

GROUP BY events.b_g, events.vector
ORDER BY events.b_g, events.vector, 'attempts'

[download]

and...

...
WHERE
 requests.b_g = events.b_g
OR
      otf.b_g = events.b_g
...

[download]

this might or might not help.

In reply to Re: DBI question with placeholders and IN by zengargoyle
in thread DBI question with placeholders and IN by dragonchild

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.