大约有 37,000 项符合查询结果（耗时：0.0256秒） [XML]
T-SQL: Opposite to string concatenation - how to split string into multiple records [duplicate]
...le gem:
CREATE FUNCTION dbo.Split (@sep char(1), @s varchar(512))
RETURNS table
AS
RETURN (
WITH Pieces(pn, start, stop) AS (
SELECT 1, 1, CHARINDEX(@sep, @s)
UNION ALL
SELECT pn + 1, stop + 1, CHARINDEX(@sep, @s, stop + 1)
FROM Pieces
WHERE stop > 0
)
S...
How do I find a default constraint using INFORMATION_SCHEMA?
...t if a given default constraint exists. I don't want to use the sysobjects table, but the more standard INFORMATION_SCHEMA.
...
How to implement a many-to-many relationship in PostgreSQL?
I believe the title is self-explanatory. How do you create the table structure in PostgreSQL to make a many-to-many relationship.
...
Centering a div block without the width
...on and don't have the luxury of having a good one to choose. A single-cell table is another option, although a table with one cell isn't really a table, is it?
– Mike M. Lin
Jan 9 '13 at 18:03
...
Export Postgresql table data using pgAdmin
...
Just right click on a table and select "backup". The popup will show various options, including "Format", select "plain" and you get plain SQL.
pgAdmin is just using pg_dump to create the dump, also when you want plain SQL.
It uses something lik...
How do I use prepared statements in SQlite in Android?
...roid all the time, it's quite simple :
SQLiteDatabase db = dbHelper.getWritableDatabase();
SQLiteStatement stmt = db.compileStatement("INSERT INTO Country (code) VALUES (?)");
stmt.bindString(1, "US");
stmt.executeInsert();
...
A dependent property in a ReferentialConstraint is mapped to a store-generated column
...
Is it possible that you defined a bad column relation between your tables? different columns and one was set as autonumeric.
It happened to me.
share
|
improve this answer
|
...
MySQL: Transactions vs Locking Tables
I'm a bit confused with transactions vs locking tables to ensure database integrity and make sure a SELECT and UPDATE remain in sync and no other connection interferes with it. I need to:
...
MySQL root password change
... to reset my MySQL root password. I have run the mysqld_safe --skip-grant-tables, updated the root password, and checked the user table to make sure it is there. Once restarting the mysql daemon I tried logging in with the new root password that I just set and still get Access denied for user 'roo...
Give all the permissions to a user on a DB
... -- ... system schemas
);
END
$$;
Then, all permissions for all tables (requires Postgres 9.0 or later).
And don't forget sequences (if any):
GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO my_user;
GRANT ALL PRIVILEGES ON ALL SEQUENCES IN SCHEMA public TO my_user;
For older ver...