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Foreign Key to non-primary key
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190
If you really want to create a foreign key to a non-primary key, it MUST be a column that has a ...
Turn off constraints temporarily (MS SQL)
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You can disable FK and CHECK constraints only in SQL 2005+. See ALTER TABLE
ALTER TABLE foo NOCHECK CONSTRAINT ALL
or
ALTER TABLE foo NOCHECK CONSTRAINT CK_foo_column
Primary keys and unique constraints can not be disabled, but this should be OK if I've understood you corr...
SQL Server Escape an Underscore
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edited Jun 12 at 0:28
Pang
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answered...
Getting a random value from a JavaScript array
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edited Jul 24 at 5:06
tamil arasan
111 bronze badge
answered Dec 29 '10 at 0:06
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What exactly is Arel in Rails 3.0?
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What exactly is Arel in Rails 3.0?
It's an object model for an algebra of relational query operators.
I understand that it is a replacement for ActiveRecord
No, it isn't. It's a replacement for hand-crafting SQL queries in strings. It is a common query l...
Ruby sleep or delay less than a second?
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203
sleep(1.0/24.0)
As to your follow up question if that's the best way: No, you could get not...
How to remove the last character from a string?
...ring method(String str) {
if (str != null && str.length() > 0 && str.charAt(str.length() - 1) == 'x') {
str = str.substring(0, str.length() - 1);
}
return str;
}
share
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Discard Git Stash Pop
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answered Nov 18 '13 at 0:30
MichaelMilomMichaelMilom
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How to determine whether a Pandas Column contains a particular value
...s in the index:
In [11]: s = pd.Series(list('abc'))
In [12]: s
Out[12]:
0 a
1 b
2 c
dtype: object
In [13]: 1 in s
Out[13]: True
In [14]: 'a' in s
Out[14]: False
One option is to see if it's in unique values:
In [21]: s.unique()
Out[21]: array(['a', 'b', 'c'], dtype=object)
In [22]:...
Is it possible to delete an object's property in PHP?
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edited Jun 18 '19 at 17:03
Nathan Arthur
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answe...