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PostgreSQL Autoincrement
I'm switching from MySQL to PostgreSQL and was wondering how I can do autoincrement values. I saw in the PostgreSQL docs a datatype "serial", but I get syntax errors when using it (in v8.0).
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Is there an auto increment in sqlite?
... you should try to avoid:
INSERT INTO people VALUES ("John", "Smith");
and use
INSERT INTO people (first_name, last_name) VALUES ("John", "Smith");
instead. The first version is very fragile — if you ever add, move, or delete columns in your table definition the INSERT will either fail o...
Is there a way to list open transactions on SQL Server 2000 database?
... Jul 24 '17 at 5:47
Jibin Balachandran
3,16311 gold badge1818 silver badges3535 bronze badges
answered Dec 15 '10 at 12:45
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Delete sql rows where IDs do not have a match from another table
... @Pacerier - "wrong" is a bit strong. To make sure people understand, the answers do work if fileidis non-nullable. Also, the third solution (NOT IN) only requires that f.id by non-nullable. Presumably that is a primary key, so it would be.
– ToolmakerSteve
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How to define object in array in Mongoose schema correctly with 2d geo index
...ay , "default" : [] }
In the second case during insertion make the object and push it into the array like
db.update({'Searching criteria goes here'},
{
$push : {
trk : {
"lat": 50.3293714,
"lng": 6.9389939
} //inserted data is the object to be inserted
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How do you perform a left outer join using linq extension methods
... tableB = new List<int?> { 3, 4, 5 };
// Result using both Option 1 and 2. Option 1 would be a better choice
// if we didn't expect multiple matches in tableB.
{ A = 1, B = null }
{ A = 2, B = null }
{ A = 3, B = 3 }
List<int> tableA = new List<int> { 1, 2, 3 };
List<int?&g...
Foreign key constraint may cause cycles or multiple cascade paths?
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SQL Server does simple counting of cascade paths and, rather than trying to work out whether any cycles actually exist, it assumes the worst and refuses to create the referential actions (CASCADE): you can and should still create the constraints without the referential acti...
Run a Docker image as a container
... answered Aug 28 '13 at 21:14
AndyAndy
28.2k44 gold badges3636 silver badges4949 bronze badges
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Django database query: How to get object by id?
...ror exception. What was confusing me was that the code below executed fine and returned a result set as expected:
Class.objects.all()
Tail of the traceback for the get() method:
File "django/db/models/loading.py", line 197, in get_models
self._populate()
File "django/db/models/loading.py", l...
Find all tables containing column with specified name - MS SQL Server
...ious INFORMATION_SCHEMA views included in SQL Server comply with the ISO standard definition for the INFORMATION_SCHEMA., sys.columns, sys.tables is Microsoft Sql Server specific.
– Tomasito
Mar 18 '14 at 21:36
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