Having two tables, \"users\" and \"lists\", and a many-to-many \"subscriptions\" table relating users to lists (thus having foreign keys user_id and list_id), what would be a single SQL query to find
I am working with Python MySQL, and need to clean a table in my database that has 13328 rows. I can not make a simple drop table, because this table is child and also father of other child foreign-ke
Background: today, an issue arose while using SQL Server Reporting Services. It seems that SSRS drop-down parameters in the report viewer don\'t allow you to indicate a (null) option so that you can s
I need to perform an ON DELETE CASCADE on my table named CATEGORY, which has the following columls CAT_ID (BIGINT)
I need to add a Column \"CurrentLifeCycleId\" [int] into 73 tables and also add a Foreign Key from this new column to another single table \"LifeCycle\" Id column...is there a simple way I can do this
I am using phpMyAdmin. In order to set up a foreign key constraint with InnoDB (under the \"Relation View\" link on the Structure tab) it appears that I need to add an index for the field to which I w
I\'m trying to use foreign keys properly to maintain data integrity. I\'m not really a database guy so I\'m wondering if there is some general design principle I don\'t know about. Here\'s an example
I\'ve been racking my brain trying to come up with a solution to this. For a database class, I need to implement the following:
I know what they are my question is, how do you link them or are they automatically linked when you have identical names开发者_JS百科 in different tables.
The method or operation is not permitted. I assume this is a permission开发者_StackOverflow社区\'s issue, but I can\'t figure out where I would change it. It is strange because I can rename an inde
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