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Naming convention for unique constraint
...imary key doesn't get a sequence number since there can be only one. The 2-char alpha suffix meanings are:
PK: Primary Key
AK: Alternate Key
FK: Foreign Key
IX: IndeX
CK: ChecK
DF: DeFault
I generally want to group metadata/system catalog data by the controlling object rather than by object type...
Create table (structure) from existing table
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This solution is clearer than having the extra condition "1 = 2", I would recommend this
– Pinte Dani
Oct 2 '19 at 5:58
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...
List columns with indexes in PostgreSQL
...ect
t.relname as table_name,
i.relname as index_name,
array_to_string(array_agg(a.attname), ', ') as column_names
from
pg_class t,
pg_class i,
pg_index ix,
pg_attribute a
where
t.oid = ix.indrelid
and i.oid = ix.indexrelid
and a.attrelid = t.oid
and a.attn...
Setting onClickListener for the Drawable right of an EditText [duplicate]
...= drawableLeft.getBounds();
int x, y;
int extraTapArea = (int) (13 * getResources().getDisplayMetrics().density + 0.5);
x = actionX;
y = actionY;
if (!bounds.contains(actionX, actionY)) {
/** Give...
Xcode 4 - “Archive” is greyed out?
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see the picture. but I have to type enough chars to post the picture.:)
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How do I manage MongoDB connections in a Node.js web application?
...database errors when using the connection anyway, this doesn't lead to any extra inline handling.
– java-addict301
Jun 6 '17 at 0:31
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UIView Infinite 360 degree rotation animation?
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It is a constant String key, that helps you identify and search the animation. It can be any String you want. In the removal process, you can see that the animation is searched and than deleted by this key.
– Kádi
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printf() formatting for hex
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The # part gives you a 0x in the output string. The 0 and the x count against your "8" characters listed in the 08 part. You need to ask for 10 characters if you want it to be the same.
int i = 7;
printf("%#010x\n", i); // gives 0x00000007
printf("0x%08x\n", i);...
Entity Framework 5 Updating a Record
...hen to call, for example:
public void UpdatePasswordAndEmail(long userId, string password, string email)
{
var user = new User {UserId = userId, Password = password, Email = email};
Update(user, u => u.Password, u => u.Email);
Save();
}
I like one trip to the database. Its pro...
Check if a row exists, otherwise insert
... can be worked around with a kind of double checked locking via preventive extra exists check without locking hints.
– Vadzim
May 14 '18 at 19:36
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