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20.3.4.4 Delete Tables

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You can use the delete() method to remove some or all records from a table in a database. The X DevAPI provides additional methods to use with the delete() method to filter and order the records to be deleted.

Delete Records Using Conditions

The example that follows passes search conditions to the delete() method. All records matching the condition will be deleted from the city table. In this example, one record matches the condition. 

mysql-js> db.city.delete().where("Name = 'Olympia'")
Query OK, 1 item affected (0.01 sec)

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Delete the First Record

To delete the first record in the city table, use the limit() method with a value of 1. 

mysql-js> db.city.delete().limit(1)
Query OK, 1 item affected (0.02 sec)

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Delete All Records in a Table

You can delete all records in a table. To do so, use the delete() method without specifying a search condition.

Caution

Use care when you delete records without specifying a search condition. This action will delete all records from the table.

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Drop a Table

The dropCollection() method is also used in MySQL Shell to drop a relational table from a database. For example, to drop the citytest table from the world_x database, issue: 

mysql-js> session.dropCollection("world_x", "citytest")
Query OK (0.04 sec)

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Document created the 26/06/2006, last modified the 26/10/2018
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References

  1. View the html document Language of the document:en Manuel MySQL : https://dev.mysql.com/

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