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POMySQL: Query to compare succesive values
 

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  1. POMySQL: Query to compare succesive values
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    <p>I have a table like this:</p> <pre><code>| Time | Cash | Employee | |----------------|----------| | 03:30 | 300 | McClane | | 03:35 | 400 | Travis | | 04:30 | 200 | Travis | | 04:53 | 100 | John | </code></pre> <p>I need to select 2 consecutive values that: </p> <ul> <li>results in >= 500 (cash) </li> <li>both are in less than 1 minute (time) from each other </li> <li>are by the same Employee</li> </ul> <p>It should be like this:</p> <pre><code>| Time | Cash | Employee | |----------------|----------| | 03:35 | 400 | Travis | | 04:30 | 200 | Travis | </code></pre> <p>The closest thing I've achieved is something like this:</p> <pre><code>select time, cash, employee from table where (Cash + Cash) &gt;= 500 </code></pre> <p>and</p> <pre><code>select time(now() - interval 1 minute) </code></pre> <p>This can give me the - 1 minute but I can't use the "Time" field instead of the "now()" function.</p> <p>Thanks in advance for any help and sorry for the broken english.</p> <p><strong>EDIT.</strong> A big mistake, it doesn't matter if the the records are not successive, so I can order them by time first.</p> <p>I need to print the records like this:</p> <pre><code>| Time | Cash | Employee | |----------------|----------| | 03:35 | 400 | Travis | | 04:30 | 200 | Travis | | Time | Cash | Employee | |----------------|----------| | 05:00 | 300 | John | | 05:30 | 300 | John | | Time | Cash | Employee | |----------------|----------| | 06:35 | 200 | McClane | | 06:37 | 200 | McClane | | 06:41 | 200 | McClane | </code></pre> <p>Thanks to all for replying, I'm trying with your answers.</p>
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    1. USramonovski
    1. USramonovski
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    1. COWhat if there are three records within one second all with 200? Would you want to find these?
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      1. USGordon Linoff
    2. COare the records orders in the table? and would it matter if two records of the same employee are within 1 sec but there are other rows in-between?
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      1. USluksch
    3. COI think you need to look at the cross apply option
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      1. USLimey
 

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