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    <p><strong>UPDATED</strong></p> <pre><code>SELECT user_id, COALESCE(MIN(CASE WHEN 1 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `1`, COALESCE(MIN(CASE WHEN 2 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `2`, COALESCE(MIN(CASE WHEN 3 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `3`, COALESCE(MIN(CASE WHEN 4 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `4`, COALESCE(MIN(CASE WHEN 5 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `5`, COALESCE(MIN(CASE WHEN 6 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `6`, COALESCE(MIN(CASE WHEN 7 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `7`, COALESCE(MIN(CASE WHEN 8 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `8`, COALESCE(MIN(CASE WHEN 9 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `9`, COALESCE(MIN(CASE WHEN 10 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `10`, COALESCE(MIN(CASE WHEN 11 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `11`, COALESCE(MIN(CASE WHEN 12 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `12`, COALESCE(MIN(CASE WHEN 13 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `13`, COALESCE(MIN(CASE WHEN 14 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `14`, COALESCE(MIN(CASE WHEN 15 BETWEEN DAY(start_date) AND DAY(end_date) THEN event_id END), 0) `15` FROM ( SELECT id, event_id, CASE WHEN start_date &lt; '2013-03-01' THEN '2013-03-01' ELSE start_date END start_date, CASE WHEN end_date &gt; '2013-03-31' THEN '2013-03-31' ELSE end_date END end_date, user_id FROM events WHERE (start_date &gt;= '2013-03-01' AND end_date &lt;= '2013-03-31') OR (start_date &lt; '2013-03-01' AND end_date &gt; '2013-03-31') OR (start_date &lt; '2013-03-01' AND end_date BETWEEN '2013-03-01' AND '2013-03-31') OR (start_date BETWEEN '2013-03-01' AND '2013-03-31' AND end_date &gt; '2013-03-31') ) q GROUP BY user_id </code></pre> <p>Output:</p> <pre> | USER_ID | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | ----------------------------------------------------------------------------- | 1 | 0 | 1 | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 2 | 2 | 2 | | 3 | 0 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | </pre> <p>Here is <strong><a href="http://sqlfiddle.com/#!2/79aa8/2" rel="nofollow">SQLFiddle</a></strong> demo</p>
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    1. POGet data from two tables to make an event-calendar
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    1. POGet data from two tables to make an event-calendar
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    1. COThank you. It is working. But, please, what about an event that starts BEFORE 2013-03-01 and ends in March or after 2013-03-31?
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      1. USMugur Ungureanu
    2. CO@MugurUngureanu See updated answer and sqlfiddle demo
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    3. COYes. Working. And mine is working. But it was your ideea with just a small contribution. Thank you! Have a nice day!!!
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Guidance
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