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Migration: Cannot add foreign key constraint
... $table->engine = 'InnoDB'; is required to enforce foreign key at MySql level. The default laravel engine is MyIsam wich not support foreign keys !
– François Breton
Oct 9 '15 at 18:16
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Unioning two tables with different number of columns
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phpmyadmin logs out after 1440 secs
In my local development Ubuntu box I use MySQL and phpmyadmin to work with the database.
24 Answers
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On Duplicate Key Update same as insert
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There is a MySQL specific extension to SQL that may be what you want - REPLACE INTO
However it does not work quite the same as 'ON DUPLICATE UPDATE'
It deletes the old row that clashes with the new row and then inserts the new row. ...
Regular Expressions: Is there an AND operator?
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@Liam:. MySQL uses the POSIX ERE flavor, so no. It effectively sacrifices features in favor of performance, which seems reasonable to me. There's more information here.
– Alan Moore
Oct 15 '1...
Can I bind an array to an IN() condition?
...x in a table, and it is still not implemented yet - see this record in the MYSQL bug tracker. Thanks to @BillKarwin for the notice.
You can't use a string with comma inside as a value of the array for search. It is impossible to parse such string in the right way after implode since you use comma sy...
What is the advantage of using heredoc in PHP? [closed]
...ot use double quotes within there in the first place. That only works with MySQL, and only when that server doesn't run in --ansi compliant mode. SQL strings must use single quotes.
– mario
Apr 15 '11 at 7:27
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An explicit value for the identity column in table can only be specified when a column list is used
...L-Server it calls "IDENTITY (1, 1)" - your answer is absolutely right. But MySQL and Oracle has another commands for it (and it gets non-obvious, please look at w3schools.com/sql/sql_autoincrement.asp)
– Aleksandr Khomenko
Apr 12 '16 at 8:24
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How can I clear scrollback buffer in Tmux?
...\; run-shell "sleep .3s" \; clear-history
This even works if you're in a MySQL shell for instance.
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Get environment variable value in Dockerfile
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add -e key for passing environment variables to container.
example:
$ MYSQLHOSTIP=$(sudo docker inspect -format="{{ .NetworkSettings.IPAddress }}" $MYSQL_CONRAINER_ID)
$ sudo docker run -e DBIP=$MYSQLHOSTIP -i -t myimage /bin/bash
root@87f235949a13:/# echo $DBIP
172.17.0.2
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