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What is causing ERROR: there is no unique constraint matching given keys for referenced table?
Below example table structure gives an ERROR: there is no unique constraint matching given keys for referenced table, and having stared at it for while now I can't figure out why this error arises in this situation.
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Explicit vs implicit SQL joins
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Personally I prefer the join syntax as its makes it clearer that the tables are joined and how they are joined. Try compare larger SQL queries where you selecting from 8 different tables and you have lots of filtering in the where. By using join syntax you separate out the parts where the tabl...
Make a DIV fill an entire table cell
...nswered) and we have CSS3! Is there any way to get a div to fill an entire table cell's width and height using CSS?
26 Answ...
MySQL Creating tables with Foreign Keys giving errno: 150
I am trying to create a table in MySQL with two foreign keys, which reference the primary keys in 2 other tables, but I am getting an errno: 150 error and it will not create the table.
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html - table row like a link
I can't set my table row as link to something. I can use only css and html. I tried different things from div in row to something another, but still can't make it works.
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Should you always favor xrange() over range()?
...rint " ".join(format(i*j,"3d") for j in xr) and voila! You have your times-tables up to ten. It works just the same as r = range(1,11) and for i in r: print " ".join(format(i*j,"3d") for j in r)... everything is an object in Python2. I think what you meant to say is that you can do index-based compr...
CSS display:table-row does not expand when width is set to 100%
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If you're using display:table-row etc., then you need proper markup, which includes a containing table. Without it your original question basically provides the equivalent bad markup of:
<tr style="width:100%">
<td>Type</td>
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Passing argument to alias in bash [duplicate]
...and definition (for each defined alias, keyword, function, builtin or executable file):
type -a foo
Or type only (for the highest precedence occurrence):
type -t foo
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Why can't I define a static method in a Java interface?
...h models observed behavior accurately.
Pretend that each class has a hash table that maps method signatures (name and parameter types) to an actual chunk of code to implement the method. When the virtual machine attempts to invoke a method on an instance, it queries the object for its class and loo...
How to import an excel file in to a MySQL database
... Note that this procedure requires that you first create the table, with the appropriate fields.
– LarsH
Mar 24 '16 at 15:00
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