mysql CREATE OR REPLACE VIEW
时间: 2023-10-17 12:29:31 浏览: 54
CREATE OR REPLACE VIEW is a statement in MySQL that allows you to create a new view or replace an existing view with a new definition. It is typically used to modify the definition of a view without dropping and recreating it.
Here's an example of how you can use CREATE OR REPLACE VIEW in MySQL:
```sql
CREATE OR REPLACE VIEW my_view AS
SELECT column1, column2
FROM my_table
WHERE condition;
```
In this example, the view named "my_view" is created or replaced with a new definition that selects the specified columns from the table "my_table" based on the given condition.
Remember that when you replace a view, all the permissions, triggers, or other dependencies associated with the view are preserved.
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