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20.4.4.4 Delete Tables
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-py> db.city.delete().where("Name = 'Olympia'")
Query OK, 1 item affected (0.01 sec)
To delete the first record in the city table, use the
limit()
method with a value of 1.
mysql-py> db.city.delete().limit(1)
Query OK, 1 item affected (0.02 sec)
You can delete all records in a table. To do so, use the
delete()
method without specifying a search
condition.
Use care when you delete records without specifying a search condition. This action will delete all records from the table.
The drop_collection()
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-py> session.drop_collection("world_x", "citytest")
Query OK (0.04 sec)
See TableDeleteFunction for the full syntax definition.
See Section 20.4.2, “Download and Import world_x Database” for instructions to recreate the
world_x
database.
Document created the 26/06/2006, last modified the 26/10/2018
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