对于MySQL或MariaDB: sql SHOW TABLES; 对于PostgreSQL: sql \dt 或者 sql SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'; 对于SQL Server: sql SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE' AND TABLE_CATALOG='your_database_nam...
You have a table and you want to see all the other tables which have the foreign key constraints pointing to that table, or to a particular column in that table. To see foreign key relationships of a table: SELECT TABLE_NAME, COLUMN_NAME, CONSTRAINT_NAME, REFERENCED_TABLE_NAME, REFERENCED...
We can see an error has been generated that “Table ‘Grocery_bill’ already exists”, now we will run the above command by using the “if not exists”. CREATE TABLE if not exists Grocery_bill (Employee_Id INT, Employee_name VARCHAR(50)); The command runs successfully but we discussed ...
CREATE DATABASE example_db; CREATE user 'example_user'@'192.0.2.0' IDENTIFIED BY 'password'; GRANT SELECT,INSERT,UPDATE,DELETE ON example_db.* TO 'example_user' IDENTIFIED BY 'password'; USE example_db; CREATE TABLE message_app_users (user_id INT NOT NULL AUTO_INCREMENT PRIMARY KEY, user...
Doing a table dump in terminal can be daunting. Especially if you are keeping track of Unix binaries or usage logs. I keep a copy of phpMyAdmin on my dev box for looking through the tables via a web browser. You can execute queries or mysql operations via the GUI and have the mysql ...
MySQL, like most databases, allows you to add comments to each table and column. If used, this is useful for understanding database schema and meaning of data elements. In this tutorial, I would like to show you how to view and edit table and column comments withMySQL Workbench- a free...
After the user submits the information, the insert.php script will save it in the database table. Then you may want to output that information, so that the user can see it on the page. The first command you will need to use is the SELECT FROM MySQL statement that has the following ...
In MySQL, there is no built-in function to create pivot tables, so you’ll have to write a MySQL query to generate a pivot table. Fortunately, there are three different ways to create a pivot table using MySQL. Create Pivot Table in MySQL usingIFstatement ...
https://mariadb.com/kb/en/mariadb/optimizing-table_open_cache/ setting the query_cache_type to 1 (per mysqltuner recommendations): $ sudo nano /etc/mysql/mysql.conf.d/mysqld.cnf change the query_cache_type to 1 in the [mysqld] section so it looks like this: ...
There are some instances where we may need to copy a specific table from the same or a different database. For example, when performing backups or migrations, we might need to restore a table without restoring the entire database. How to Copy a Table in