I\'m开发者_Go百科 taking my first steps in Symfony2 entity relations. I have an entity installation, which each has one meter, and one monitor.
I am trying to add a new unique index on one of my database tables in SQL Server 2008.This is an existing table and the column where I want th开发者_运维技巧e unique index already has some duplicate v
I have the following problem. I have a parent class with a collection of child objects. public class Parent{
Is there there any smart/best way to get the unique index name from SqlException message? like 开发者_Python百科the following:
I\'ve created a unique index like this: ALTER TABLE items ADD UNIQUE INDEX uni_item (warehouse_id, width, height, depth, weight);
If so - What must change in this table ? CREATE TABLEcontestants ( idContestantsint(10) unsigned NOT NULL AUTO_INCREMENT,
I\'ve run into a problem with MySQL unique indicies. What I want to do is have something like this: user_idgroup_id
I have a table that stores comments users make about images on the site. The table is structured with four columns, the row_id, which is the primary key, the image_id, the user_id and the comment. Wha
In SQL Server 2008 R2 I have a table with the following structure ( IdINT NOT NULL PRIMARY KEY, Left1INT NOT NULL,
I\'ve got a MySQL table that stores urls as unique keys. I\'m starting to get collisions on my keys because it seems the keys themselves are only the first 64 bytes (or characters if you prefer, its a
加载中,请稍侯......