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How to add 'ON DELETE CASCADE' in ALTER TABLE statement
...d try your above command, put add constraint instead of modify constraint.
Now this is the command:
ALTER TABLE child_table_name
ADD CONSTRAINT fk_name
FOREIGN KEY (child_column_name)
REFERENCES parent_table_name(parent_column_name)
ON DELETE CASCADE;
...
jQuery hasAttr checking to see if there is an attribute on an element [duplicate]
...@baiano IE6&7 are the only ones that don't support it, good to mention now as IE8 is pretty much all that's standing.
– Halcyon991
Jan 13 '14 at 15:02
5
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Use “ENTER” key on softkeyboard instead of clicking button
... public boolean onKey(View v, int keyCode, KeyEvent event)
{
if (event.getAction() == KeyEvent.ACTION_DOWN)
{
switch (keyCode)
{
case KeyEvent.KEYCODE_DPAD_CENTER:
case KeyEvent.KEYCODE_ENTER:
addCourse...
How do I get the last inserted ID of a MySQL table in PHP?
...
If you're using PDO, use PDO::lastInsertId.
If you're using Mysqli, use mysqli::$insert_id.
If you're still using Mysql:
Please, don't use mysql_* functions in new code. They are no longer maintained and are officially ...
How does libuv compare to Boost/ASIO?
...t libraries available, I have opted to consider additional Boost libraries if they are either directly provided or trivial to implement.
libuv Boost
Event Loop: yes Asio
Threadpool: yes Asio + Threads
Threading: ...
Showing empty view when ListView is empty
... any idea how to do that in app inventor?
– JinSnow
Mar 26 '15 at 16:56
add a comment
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Sequelize.js delete query?
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How do you handle if the id is an invalid id?
– Rod
Aug 25 '18 at 18:24
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What's the recommended way to connect to MySQL from Go?
...ct to a MySQL database from Go. I've seen some libraries around but it is difficult to determine the different states of completeness and current maintenance. I don't have complicated needs, but I'd like to know what people are relying on, or what's the most standard solution to connect to MySQL.
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How to get Erlang's release version number from a shell?
...E" doesn't see it either, but I have OTP 17.x installed. How am I able to know what "x" is?
– NobbZ
Apr 21 '15 at 14:30
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How to convert JSON to CSV format and store in a variable
... cases separately. If no replacer is used null will be outputted as null - now the examples should handle both null, undefined and numbers correctly.
– Christian Landgren
Oct 20 '16 at 7:15
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