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Insert multiple rows WITHOUT repeating the “INSERT INTO …” part of the statement?
...ou might have figured this out yet long ago, but it's really quite simple. By using select you create a set with columns and rows, and by design these rows can be inserted into another table with an equal amount of columns. You can even use a mixture of literals and values. For example, using insert...
Objective-C: difference between id and void *
...ng called has not been declared in any of the @interface declarations seen by the compiler.
Thus, one should never refer to an object as a void *. Similarly, one should avoid using an id typed variable to refer to an object. Use the most specific class typed reference you can. Even NSObject *...
Spring Data: “delete by” is supported?
...ing Spring JPA for database access. I am able to find examples such as findByName and countByName, for which I dont have to write any method implementation. I am hoping to find examples for delete a group of records based on some condition.
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How do I get the “id” after INSERT into MySQL database with Python?
...
Also, cursor.lastrowid (a dbapi/PEP249 extension supported by MySQLdb):
>>> import MySQLdb
>>> connection = MySQLdb.connect(user='root')
>>> cursor = connection.cursor()
>>> cursor.execute('INSERT INTO sometable VALUES (...)')
1L
>>> conn...
How to update two tables in one statement in SQL Server 2005?
...cumentation (emphasis is mine).
UPDATE (Transact-SQL)
The view referenced by table_or_view_name must be updatable and reference exactly one base table in the FROM clause of the view. For more information about updatable views, see CREATE VIEW (Transact-SQL).
CREATE VIEW (Transact-SQL)
You can mod...
How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
...TER TABLE test1 ADD COLUMN id INTEGER;
CREATE SEQUENCE test_id_seq OWNED BY test1.id;
ALTER TABLE test ALTER COLUMN id SET DEFAULT nextval('test_id_seq');
UPDATE test1 SET id = nextval('test_id_seq');
Again, in recent versions of Postgres this is roughly equivalent to the single command abov...
SQL query for finding records where count > 1
...
Use the HAVING clause and GROUP By the fields that make the row unique
The below will find
all users that have more than one payment per day with the same account number
SELECT
user_id ,
COUNT(*) count
FROM
PAYMENT
GROUP BY
account,
user_id ,...
The JPA hashCode() / equals() dilemma
...like to discuss them JPA-implementation-neutrally (I am using EclipseLink, by the way).
20 Answers
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How to get a value of an element by name instead of ID
...ue of an element via the attribute name instead of the ID . eg if I use by id it would be $('#id').val();
9 Answers
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Select multiple records based on list of Id's with linq
...ar that joining the needed data is more efficient than comparing two lists by iterating again and again... But sometimes one needs time to get the idea and the correct syntax. Thank you for that ????
– Nadine
Aug 8 at 13:50
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