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What is the string length of a GUID?
I want to create a varchar column in SQL that should contain N'guid' while guid is a generated GUID by .NET ( Guid.NewGuid ) - class System.Guid.
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How to retrieve the current value of an oracle sequence without increment it?
Is there an SQL instruction to retrieve the value of a sequence that does not increment it.
6 Answers
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What is the benefit of zerofill in MySQL?
... what is the benefit/usage of defining ZEROFILL for INT DataType in MySQL ?
9 Answers
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When and why JPA entities should implement Serializable interface?
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This usually happens if you mix HQL and native SQL queries. In HQL, Hibernate maps the types you pass in to whatever the DB understands. When you run native SQL, then you must do the mapping yourself. If you don't, then the default mapping is to serialize the parameter an...
How do I do a not equal in Django queryset filtering?
... import Lookup
class NotEqual(Lookup):
lookup_name = 'ne'
def as_sql(self, qn, connection):
lhs, lhs_params = self.process_lhs(qn, connection)
rhs, rhs_params = self.process_rhs(qn, connection)
params = lhs_params + rhs_params
return '%s <> %s' % (lhs,...
Include headers when using SELECT INTO OUTFILE?
Is it possible to include the headers somehow when using the MySQL INTO OUTFILE ?
18 Answers
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What is the difference between a “function” and a “procedure”?
...Transaction Management in a Procedure, whereas in a Function we can't.
In SQL:
A Procedure allows SELECT as well as DML (INSERT, UPDATE, DELETE) statements in it, whereas Function allows only SELECT statement in it.
Procedures can not be utilized in a SELECT statement, whereas Functions can be emb...
How to output MySQL query results in CSV format?
Is there an easy way to run a MySQL query from the Linux command line and output the results in CSV format?
38 Answers
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How to select where ID in Array Rails ActiveRecord without exception
...here syntax when comparing to an array. I thought I might have to code the SQL with an IN statement, but this looks cleaner and is an easy replacement for the deprecated scoped_by_id.
– Mark Berry
Jun 8 '15 at 17:49
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The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead [dupl
When I attempt to connect to a MySQL server from PHP, I see the following error:
1 Answer
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