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JPA and Hibernate - Criteria vs. JPQL or HQL
...afer to the programmer, diminishing coding errors - compilation on the HQL string is not validated.
– nuno
Jul 31 '14 at 8:37
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SQL Server Text type vs. varchar data type [closed]
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TEXT is used for large pieces of string data. If the length of the field exceeed a certain threshold, the text is stored out of row.
VARCHAR is always stored in row and has a limit of 8000 characters. If you try to create a VARCHAR(x), where x > 8000, you...
How to get the first and last date of the current year?
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This outputs strings, not dates. If that's what you really need, yay, but if you can use either, keep the dates as dates, and don't use them as strings.
– Jamie F
Nov 18 '12 at 4:09
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Options for initializing a string array [duplicate]
What options do I have when initializing string[] object?
4 Answers
4
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SQL query to find record with ID not in another table
I have two tables with binding primary key in database and I desire to find a disjoint set between them. For example,
6 Ans...
How to determine a Python variable's type?
... whole list of information about the object including the type and the doc string for the type.
e.g.
In [9]: var = 123
In [10]: var?
Type: int
Base Class: <type 'int'>
String Form: 123
Namespace: Interactive
Docstring:
int(x[, base]) -> integer
Convert a string or number ...
Reset auto increment counter in postgres
..._id_seq (that is, ${table}_${column}_seq).
This is the ALTER SEQUENCE command you need:
ALTER SEQUENCE product_id_seq RESTART WITH 1453
You can see the sequences in your database using the \ds command in psql. If you do \d product and look at the default constraint for your column, the nextval(....
How to include “zero” / “0” results in COUNT aggregate?
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You want an outer join for this (and you need to use person as the "driving" table)
SELECT person.person_id, COUNT(appointment.person_id) AS "number_of_appointments"
FROM person
LEFT JOIN appointment ON person.person_id = appointment.person_id
GROUP BY p...
Can't delete virtual device from Eclipse, android
... "Delete Android Virtual Device",
String.format(
"The Android Virtual Device '%1$s' is currently running in an emulator and cannot be deleted.",
avdInfo.getName()));
}
});
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Understanding spring @Configuration class
... follows:
@Autowired
@Value("${some.interesting.property}")
private final String someInterestingProperty;
This can be used with SpEL expressions as well.
In order to allow spring to treat such classes as beans containers we need to mark this in our main xml by putting this tag in the context:
&...