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Add sample to delete data. #1872

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Merged
jsimonweb merged 3 commits into from
Dec 7, 2018
Merged

Add sample to delete data. #1872

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4b0b3bf
Update snippets.py
RobinRH Nov 27, 2018
c6604ff
Update snippets_test.py
RobinRH Nov 27, 2018
055bd01
Merge branch 'master' into master
jsimonweb Dec 7, 2018
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Update snippets.py
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@RobinRH
RobinRH authored Nov 27, 2018
commit 4b0b3bfc271e346fd3c47bdea4112e06c378f6ba
27 changes: 27 additions & 0 deletions spanner/cloud-client/snippets.py
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Original file line number Diff line number Diff line change
Expand Up @@ -93,6 +93,30 @@ def insert_data(instance_id, database_id):
# [END spanner_insert_data]


# [START spanner_delete_data]
def delete_data(instance_id, database_id):
"""Deletes sample data from the given database.

The database, table, and data must already exist and can be created using
`create_database` and `insert_data`.
"""
spanner_client = spanner.Client()
instance = spanner_client.instance(instance_id)
database = instance.database(database_id)

singers_to_delete = spanner.KeySet(
keys=[[1], [2], [3], [4], [5]])
albums_to_delete = spanner.KeySet(
keys=[[1, 1], [1, 2], [2, 1], [2, 2], [2, 3]])

with database.batch() as batch:
batch.delete('Albums', albums_to_delete)
batch.delete('Singers', singers_to_delete)

print('Deleted data.')
# [END spanner_delete_data]


# [START spanner_query_data]
def query_data(instance_id, database_id):
"""Queries sample data from the database using SQL."""
Expand Down Expand Up @@ -1027,6 +1051,7 @@ def delete_data_with_partitioned_dml(instance_id, database_id):

subparsers = parser.add_subparsers(dest='command')
subparsers.add_parser('create_database', help=create_database.__doc__)
subparsers.add_parser('delete_data', help=delete_data.__doc__)
subparsers.add_parser('insert_data', help=insert_data.__doc__)
subparsers.add_parser('query_data', help=query_data.__doc__)
subparsers.add_parser('read_data', help=read_data.__doc__)
Expand Down Expand Up @@ -1100,6 +1125,8 @@ def delete_data_with_partitioned_dml(instance_id, database_id):
create_database(args.instance_id, args.database_id)
elif args.command == 'insert_data':
insert_data(args.instance_id, args.database_id)
elif args.command == 'delete_data':
delete_data(args.instance_id, args.database_id)
elif args.command == 'query_data':
query_data(args.instance_id, args.database_id)
elif args.command == 'read_data':
Expand Down