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MySQL Error 1215: Cannot add foreign key constraint
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I'm guessing that Clients.Case_Number and/or Staff.Emp_ID are not exactly the same data type as Clients_has_Staff.Clients_Case_Number and Clients_has_Staff.Staff_Emp_ID.
Perhaps the columns in the parent tables are INT UNSIGNED?
They need to be exactly the same...
What is the use of making constructor private in a class?
... answered Jan 14 '10 at 6:33
nandananda
23.5k1212 gold badges6565 silver badges8989 bronze badges
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What is your most productive shortcut with Vim?
I've heard a lot about Vim , both pros and cons.
It really seems you should be (as a developer) faster with Vim than with any other editor.
I'm using Vim to do some basic stuff and I'm at best 10 times less productive with Vim.
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Unable to execute dex: GC overhead limit exceeded in Eclipse
When I downloaded the Git project OsmAnd and went to compile it,
Eclipse returned these errors:
9 Answers
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Using C# to check if string contains a string in string array
... Thanks, I modified your code to: if (stringToCheck.Contains(s)) and it worked.
– Theomax
May 26 '10 at 13:29
5
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Position a CSS background image x pixels from the right?
...I do not know if it's valid"... it's not. The property in question has a standard order for the values.
– Andrew Barber
Oct 11 '12 at 15:21
14
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How to add items to a spinner in Android?
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XML file:
<Spinner
android:id="@+id/Spinner01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
Java file:
public class SpinnerExample extends Activity {
@Override
public void onCreate(Bundle sav...
How to check if all list items have the same value and return it, or return an “otherValue” if they
..., otherwise I need to use an “otherValue”. I can’t think of a simple and clear way of doing this.
9 Answers
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Java int to String - Integer.toString(i) vs new Integer(i).toString()
...t is to print an int, you'd use the first one because it's lighter, faster and doesn't use extra memory (aside from the returned string).
If you want an object representing an integer value—to put it inside a collection for example—you'd use the second one, since it gives you a full-fledged o...
What's the difference between the data structure Tree and Graph?
... speaking, what's the essential difference between the data structure Tree and Graph? And how about the tree based search and Graph based search?
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